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英语句子公式 例如看到B动词后面+什么
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1、主语+系动词+表语：e.g. He is a student.
2、主语+不及物动词：e.g. We work.3、主语+及物动词+宾语：e.g. Henry bought a dictionary.4、主语+及物动词+双宾语（间接宾语+直接宾语）：e.g. My father bought me a car.5、主语+及物动词+复合宾语（宾语+宾补）：e.g. Tom made the baby laugh.
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形容词 或是V。ing 表示现在进行时 或是过去分词 表示被动 望采纳
可以加除动词原形之外的一切 = =。
我也不知道
扫描下载二维码We got a little _________(sunburn). 用动词的适当形式填空，请详_百度知道
We got a little _________(sunburn). 用动词的适当形式填空，请详
We got a little _________(sunburn).用动词的适当形式填空，请详细分析一下横线上为什么填sunburned或者sunburnt.请说明一下理由，十分感谢。拜托了，谢谢。
我有更好的答案求助知道网友
a little (adv.) = slightly sunburnt (adj.) 修饰 we
为什么sunburn的形容词形式是sunburned或者sunburnt,分析一下并且说明下理由谢谢！
先简化句形为We got sunburnt主词+连系动词+主词补语sunburnt 为形容词可以1)形容名词2)作为主词补语sunburnt
Dr.eye译典通KK [ˋsʌn͵bɝnt] DJ [ˋsʌnbə:nt]
晒黑的；日灼的sunburned (quoted from 朗文当代高级词典第三版)又作 sunburnt (adj-)You can find the explanation in any dictionay.
请说一下理由谢谢！
get是系动词，后接adj，动词的分词形式可当作adj。a little可看作adv修饰adj
动词的分词可当作形容词，是不是既包括现在分词，也包括过去分词，请说明一下，谢谢！
是的。但是这只是可以看成adj，有些地方可以当adj用，有些则不能
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all be动词位置我记得是all在be动词后面啊,为什么书上有：We will all be very grateful……
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1.all 在实意动词之前,be动词,助动词（do,will ,……）,情态动词（can,may……）之后.2.但是多个be动词,助动词（do,will ,……）,情态动词（can,may……）出现,那all 就放在第一个助动词之后.例如We will(第一助动词...
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verb，一般译为“动词”，指用来表示动作或状态的词汇。
verb动词总介
1） 表示动作中状态的词叫做动词。
2） 根据其在句中的功能，动词可分为四类，
分别是：（Notional Verb）、（Link Verb）、（Auxiliary Verb）、（Modal Verb）。
说明：有些情况下，有些动词是，例如：
We are having a meeting.　 我们正在开会。　 （having是实义动词。）
He has gone to New York.　他已去纽约。
（has是助动词。）
3） 动词根据其后是否带有宾语，可分为两类，
分别是：（Transitive Verb）、（Intransitive Verb），缩写形式分别为vt. 和vi.。
说明：同一动词有时可用作及物动词，有时可用作不及物动词。例如：
She can dance and sing.
她能唱歌又能跳舞。（sing在此用作不及物动词。）
She can sing many English songs.
她能唱好多首英文歌曲。（sing用作及物动词。）
4） 根据是否受主语的人称和数的限制，可分两类，
分别是：（Finite Verb）、（Non-finite Verb）例如：
She sings very well.
她唱得很好。（sing受主语she的限制，故用第三人称单数形式sings。）
She wants to learn English well.
她想学好英语。（to learn不受主语she的限制，没有词形变化，是非限定动词。
说明：英语中共有三种非限定动词，分别是：动词不定式（Infinitive）、动名词（Gerund）、分词（Participle）。
5)　根据动词的组成形式，可分为三类，
分别是：单字词（One-Word Verb）、（Phrasal Verb）、（Verbal Phrase）例如：
The English language contains many phrasal verbs and verbal phrases.
英语里有许多短语动词和动词短语。（contains是单字动词。）
Students should learn to look up new words in dictionaries.
学生们学会查字典。（look up是短语动词。）
The young ought to take care of the old.
年轻人应照料老人。（take care of是动词短语。）
6）动词有五种形态，
分别是：（Original Form）、第三人称单数形式（Singular From in Third Personal）、（Past Form）、（Past Participle）、（Present Participle）。
verb系动词
亦称联系动词（Link Verb），作为系动词，它本身有词义，但不能单独用作，后边必须跟表语（亦称补语），构成系表结构说明主语的状况、性质、特征等情况。
有些系动词又是实义动词，该动词表达实义时，有词义，可单独作谓语，例如：
He fell ill yesterday.
他昨天病了。（fell是系动词，后跟补足语，说明主语情况。）
He fell off the ladder.
他从梯子上摔下来。fell是实义动词，单独作谓语。
1）状态系动词
用来表示主语状态，只有be一词，例如：
He is a teacher.　他是一名教师。（is与补足语一起说明主语的身份。）
2）持续系动词
用来表示主语继续或保持一种状况或态度，主要有keep, rest, remain, stay, lie, stand, 例如：
He always kept silent at meeting.　 他开会时总保持沉默。
This matter rests a mystery.　 此事仍是一个谜。
3）表像系动词
用来表示&看起来像&这一概念，主要有seem, appear, look, 例如：
He looks tired.　 他看起来很累。
He seems (to be) very sad.　 他看起来很伤心。
4）感官系动词
感官系动词主要有feel, smell, sound, taste, 例如：
This kind of cloth feels very soft.
这种布手感很软。
This flower smells very sweet.
这朵花闻起来很香。
5）变化系动词
这些系动词表示主语变成什么样，变化系动词主要有become, grow, turn, fall, get, go, come, run.
He became mad after that.　 自那之后，他疯了。
She grew rich within a short time.　 她没多长时间就富了。
6）终止系动词
表示主语已终止动作，主要有prove, trun out, 表达&证实&，&变成&之意，例如：
The rumor proved false.　这谣言证实有假。
The search proved difficult.　搜查证实很难。
His plan turned out a success.　 他的计划终于成功了。（turn out表终止性结果）
verb助动词
1）协助主要动词构成谓语动词词组的词叫（Auxiliary Verb）。被协助的动词称作主要动词（Main Verb）。
助动词自身没有词义，不可单独使用，例如：
He doesn't like English.　他不喜欢英语。
（doesn't是助动词，无词义；like是主要动词，有词义)
2） 助动词协助主要动词完成以下功用，可以用来：
a. 表示时态，例如：
He is singing.　他在唱歌。
He has got married.　他已结婚。
b. 表示语态，例如：
He was sent to England.　他被派往英国。
c. 构成疑问句，例如：
Do you like college life?　你喜欢大学生活吗？
Did you study English before you came here?　 你来这儿之前学过英语吗？
d. 与否定副词not合用，构成否定句，例如：
I don't like him.　 我不喜欢他。
e. 加强语气，例如：
Do come to the party tomorrow evening. 明天晚上一定来参加晚会。
He did know that.　 他的确知道那件事。
3） 最常用的助动词有：be, have, do, shall, will, should, would
verb短语动词
动词加小品构成的起动词作用的短语叫短语动词（Phrasal Verb）。例如：
Turn off the radio.　把收音机关上。（turn off是短语动词）
短语动词的构成基本有下列几种：
1） 动词+副词，如：black out；
2） 动词+介词，如：look into；
3） 动词+副词+介词，如：look forward to。构成短语动词的副词和介词都统称为小品词（Particle）。
verb非谓语动词
在句子中充当除谓语以外的句子成分的动词形式叫做非谓语动词。非谓语动词分为三种形式:不定式，动名词，和分词(分词包括现在分词和过去分词)。
时态\语态　 主动　被动
一般式　to do　 to be done
完成式　 to have done　to have been done
时态\语态　 主动　被动
一般式　doing　being done
完成式　having done　having been done
时态\语态　 主动　被动
一般式　doing　being done
完成式　having done　having been done
否定形式： not +不定式，　not + 动名词，　not + 现在分词
verb动词的时态
时态是英语谓语动词的一种形式,表示动作发生的时间和所处的状态.英语中的时态是通过动词形式本身的变化来实现的.英语有16种时态,但中学阶段较常用的有十种:一般现在时,一般过去时,一般将来时,过去将来时,现在进行时,过去进行时,将来进行时,过去完成时,英在完成时和现在完成进行时.
1) 如果从句所叙述的为真理或不变的事实，则永远用现在时。
At that time, people did not know that the earth moves.
He told me last week that he is eighteen.
2) 宾语从句中的助动词ought, need, must, dare 时态是不变的。
He thought that I need not tell you the truth.
时态与时间状语
一般现在时　every …, sometimes,　at …, on Sunday,
一般过去时　yesterday, last week, an hour ago, the other day, in 1982, just now
一般将来时　next…, tomorrow, in+时间,
现在完成时　for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always, recently
过去完成时　before, by, until, when, after, once, as soon as
过去进行时　this morning, the whole morning, all day, yesterday, from nine to ten last evening… when, while
将来进行时　soon, tomorrow, this evening, on Sunday, by this time, tomorrow, in two days, tomorrow evening
verb11.1 一般现在时的用法
1) 经常性或习惯性的动作，常与表示频腮度的时间状语连用。
时间状语： every…, sometimes,　at…, on Sunday
I leave home for school at 7 every morning.
2) 客观真理，客观存在，科学事实。
The earth moves around the sun.
Shanghai lies in the east of China.
3) 表示格言或警句中。
Pride goes before a fall.　骄者必败。
注意：此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。
例：Columbus proved that the earth is round..
4) 现在时刻的状态、能力、性格、个性。
I don't want so much.
Ann Wang writes good English but does not speak well.
比较：Now I put the sugar in the cup.
I am doing my homework now.
第一句用一般现在时，用于操作演示或指导说明的示范性动作，表示言行的瞬间动作。再如：Now watch me, I switch on the current and stand back. 第二句中的now是进行时的标志，表示正在进行的动作的客观状况，所以后句用一般现在时。
verb一般过去时的用法
1）在确定的过去时间里所发生的动作或存在的状态。
时间状语有：yesterday, last week, an hour ago, the other day, in 1982等。
Where did you go just now?
2）表示在过去一段时间内，经常性或习惯性的动作。
When I was a child, I often played football in the street.
Whenever the Browns went during their visit, they were given a warm welcome.
It is time for sb. to do sth　 &到……时间了&　 &该……了&
It is time sb. did sth. &时间已迟了&　 &早该……了&
It is time for you to go to bed.　 你该睡觉了。
It is time you went to bed.　你早该睡觉了。
would (had) rather sb. did sth.　表示'宁愿某人做某事'
I'd rather you came tomorrow.
4) wish, wonder, think, hope 等用过去时，作试探性的询问、请求、建议等。
I thought you might have some. 我以为你想要一些。
一般过去时表示的动作或状态都已成为过去，现已不复存在。
Christine was an invalid all her life.
(含义：她已不在人间。)
Christine has been an invalid all her life.
(含义：她现在还活着)
Mrs. Darby lived in Kentucky for seven years.
(含义：达比太太已不再住在肯塔基州。)
Mrs. Darby has lived in Kentucky for seven years.
( 含义：现在还住在肯塔基州，有可能指刚离去)
注意： 用过去时表示现在，表示委婉语气。
1）动词want, hope, wonder, think, intend 等。
Did you want anything else?
I wondered if you could help me.
2）情态动词 could, would.
Could you lend me your bike?
used to / be used to
used to + do：&过去常常&表示过去习惯性的动作或状态，但如今已不存在。
Mother used not to be so forgetful.
Scarf used to take a walk.　 (过去常常散步)
be used to + doing： 对……已感到习惯，或&习惯于&，to是介词，后需加名词或动名词。
He is used to a vegetarian diet.
Scarf is used to taking a walk.(现在习惯于散步)
---- Your phone number again? I ___ quite catch it.
---- It's .
A. didn't　B. couldn't　C. don't　D. can't
答案A. 本句虽没有明确的时间状语，但从语意上看 出，在听的时候没有听懂这个动作发生在过去，因此应用过去时。
verb一般将来时
1)　shall用于第一人称，常被will 所代替。
will 在陈述句中用于各人称，在争求意见时常用于第二人称。
Which paragraph shall I read first.
Will you be at home at seven this evening?
2)　be going to +不定式，表示将来。
a. 主语的意图，即将做某事。
What are you going to do tomorrow?
b. 计划，安排要发生的事。
The play is going to be produced next month。
c. 有迹象要发生的事
Look at the dark clouds, there is going to be a storm.
3)　 be +不定式表将来，按计划或正式安排将发生的事。
We are to discuss the report next Saturday.
4)　be about to +不定式，意为马上做某事。
He is about to leave for Beijing.
注意：be about to 不能与tomorrow, next week 等表示明确将来时的时间状语连用。
be going to / will
用于条件句时， be going to　表将来
will　表意愿
If you are going to make a journey, you'd better get ready for it as soon as possible.
Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror.
be to和be going to
be to 表示客观安排或受人指示而做某事。
be going to 表示主观的打算或计划。
I am to play football tomorrow afternoon.　 (客观安排)
I'm going to play football tomorrow afternoon. (主观安排)
verb一般现在时表将来
1）下列动词：come, go, arrive, leave, start, begin, return的一般现在时表将来。这主要用来表示在时间上已确定或安排好的事情。
The train leaves at six tomorrow morning.
When does the bus star? It stars in ten minutes.
2）倒装句，表示动作正在进行，如：
Here comes the bus. = The bus is coming.
There goes the bell. = The bell is ringing.
3）在时间或条件句中。
When Bill comes (不是will come), ask him to wait for me.
I'll write to you as soon as I arrive there.
4）在动词hope, take care that, make sure that等后。
I hope they have a nice time next week.
Make sure that the windows are closed before you leave the room.
verb用现在进行时表示将来
意为：&意图&、&打算&、&安排&、常用于人。常用词为 come, go, start, arrive, leave, stay等。
I'm leaving tomorrow.
Are you staying here till next week?
verb现在完成时
现在完成时用来表示之前已发生或完成的动作或状　态，其结果的确和现在有联系。动作或状态发生在过去　但它的影响现在还存在；也可表示持续到现在的动作或　状态。其构成： have (has) +过去分词。
用于现在完成时的句型
1）It is the first / second time…. that…结构中的从句部分，用现在完成时。
It is the first time that I have visited the city.
It was the third time that the boy had been late.
2）This is the… that…结构，that 从句要用现在完成时.
This is the best film that I've (ever) seen.
这是我看过的最好的电影。
This is the first time (that) I've heard him sing.　这是我第一次听他唱歌。
(1) ---Do you know our town at all?
---No, this is the first time I ___ here.
A. was　 B. have been　 C. came　 D. am coming
答案B. This is the first time 后面所加从句应为现在完成时，故选B。
(2) ---Have you ____ been to our town before?
---No, it's the first time I ___ here.
A. even, come　 B. even, have come　C. ever, come　 D. ever, have come
答案D. ever意为曾经或无论何时，反意词为never，此两词常用于完成时。 This is the largest fish I have ever seen. It is / was the first time +that-clause 的句型中，从句要用完成时。
注意：非延续性动词的否定形式可以与表示延续时间的状语连用。即动作不发生的状态是可以持续的。
（错）I have received his letter for a month.
（对）I haven't received his letter for almost a month.
比较since和for
Since 用来说明动作起始时间，for用来说明动作延续时间长度。
I have lived here for more than twenty years.
I have lived here since I was born..
My aunt has worked in a clinic since 1949.
Some new oilfields have been opened up since 1976.
I have known Xiao Li since she was a little girl.
My brother has been in the Youth League for two years.
I have not heard from my uncle for a long time.
注意：并非有for 作为时间状语的句子都用现在完成时。
I worked here for more than twenty years.
(我现在已不在这里工作。)
I have worked here for many years.
(现在我仍在这里工作。)
小窍门：当现在完成时+一段时间，这一结构中，我们用下面的公式转化，很容易就能排除非延续动词在完成时中的误使。
1)　(对) Tom has studied Russian for three years.
= Tom began to study Russian three years ago, and is still studying it now.
2)　(错) Harry has got married for six years.
= Harry began to get married six years ago, and is still getting married now.
显然，第二句不对，它应改为 Harry got married six years ago.　或 Harry has been married for six years.
since的四种用法
1) since +过去一个时间点　(如具体的年、月、日期、钟点、1980, last month, half past six)。
I have been here since 1989.
2) since +一段时间+ ago
I have been here since five months ago.
3) since +从句
Great changes have taken place since you left.
Considerable time has elapsed since we have been here.
4) It is +一段时间+ since从句
It is two years since I became a postgraduate student.
延续动词与瞬间动词
1) 用于完成时的区别
延续动词表示经验、经历； 瞬间动词表示行为的结 果，不能与表示段的时间状语连用。
He has completed the work.　他已完成了那项工作。 (表结果)
I've known him since then.　 我从那时起就认识他了。(表经历)
2)　用于till / until从句的差异
延续动词用于肯定句，表示&做……直到……& 瞬间动词用于否定句，表示&到……，才……&
He didn't come back until ten o'clock.
他到10 点才回来。
He slept until ten o'clock.
他一直睡到10点。
1. You don't need to describe her. I ___ her several times.
A. had met　B. have met　 C. met　D. meet
答案B. 首先本题后句强调对现在的影响，我知道她的模样，你不用描述。再次，several times告知为反复发生的动作，因此用现在完成时。
2.---I'm sorry to keep you waiting.
---Oh, not at all. I ___ here only a few minutes.
A. have been　 B. had been　 C. was　D. will be
答案A. 等待的动作由过去开始，持续到现在，应用现在完成时。
verb过去完成时
1） 概念：表示过去的过去
----|-------|-----|----&其构成是had +过去分词构成。
那时以前　 那时　现在
a.　在told, said, knew, heard, thought等动词后的宾语从句。
She said (that) she had never been to Paris.
b. 状语从句
在过去不同时间发生的两个动作中，发生在先，用过去完成时；发生在后，用一般过去时。
When the police arrived, the thieves had run away.
c. 表示意向的动词，如hope, wish, expect, think, intend, mean, suppose等，用过去完成时表示&原本…，未能…&
We had hoped that you would come, but you didn't.
3)　过去完成时的时间状语before, by, until , when, after, once, as soon as。
He said that he had learned some English before.
By the time he was twelve, Edison had began to make a living by himself.
Tom was disappointed that most of the guests had left when he arrived at the party.
The students ___ busily when Miss Brown went to get a book she ___ in the office.
A. had written, left　B，were writing, has left　 C. had written, had left　D. were writing, had left
答案D. &把书忘在办公室&发生在&去取书&这一过去的动作之前，因此&忘了书&这一动作发生在过去的过去，用过去完成时。句中when表示的是时间的一点，表示在&同学们正忙于……&这一背景下，when所引导的动作发生。因此
前一句应用过去进行时。
注意：　had no … when　还没等…… 就……
had no sooner… than　刚…… 就……
He had no sooner bought the car than he sold it.
verb将来完成时
1) 构成will / be going to do sth.
a. 状态完成：表示某事继续到将来某一时为止一直有的状态。
b. 动作完成：表示将来某一时或另一个将来的动作之前，已经完成的动作或一获得的经验。
They will have been married for 20 years by then.
You will have reached Shanghai by this time tomorrow.
verb现在进行时
现在进行时的基本用法：
a. 表示现在( 指说话人说话时) 正在发生的事情。
We are waiting for you.
b. 习惯进行：表示长期的或重复性的动作，说话时动作未必正在进行。
Mr. Green is writing another novel.
(说话时并未在写，只处于写作的状态。)
She is learning piano under Mr. Smith.
c. 表示渐变的动词有：get, grow, become, turn, run, go, begin等。
The leaves are turning red.
It's getting warmer and warmer.
d. 与always, constantly, forever 等词连用，表示反复发生的动作或持续存在的状态，往往带有说话人的主观色彩。
You are always changing your mind.
My dictionary ___, I have looked for it everywhere but still___ it.
A. has lost, don't find　 B. is missing, don't find　C. has lost, haven't found　 D. is missing, haven't found.
答案D. 前句是一个仍在持续的状态，应用进行时，由于没有找到，其影响仍然存在，应用完成时，瞬间动词用于否定式时可用于完成时。
不用进行时的动词
1) 事实状态的动词
have, belong, possess, cost, owe, exist, include, contain, matter, weigh, measure, continue
I have two brothers.
This house belongs to my sister.
2) 心理状态的动词
Know, realize, think see, believe, suppose, imagine, agree, recognize, remember, want, need, forget, prefer, mean, understand, love, hate
I need your help.
He loves her very much.
3 ) 瞬间动词
accept, receive, complete, finish, give, allow, decide, refuse.
I accept your advice.
seem, remain, lie, see, hear, smell, feel, taste, get, become, turn
You seem a little tired.
verb过去进行时
1） 概念：表示过去某时正在进行的状态或动作。
2） 过去进行时的主要用法是描述一件事发生的背景；一个长动作发生的时候，另一个短动作发生。
3) 常用的时间状语
this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while
My brother fell while he was riding his bicycle and hurt himself.
It was raining when they left the station.
When I got to the top of the mountain, the sun was shining.
1) Mary ___ a dress when she cut her finger.
A. made　 B. is making　 C. was making　 D. makes
答案C. 割伤手指是已发生的事情，应用过去时。同　时，when表时间的同时性，&玛丽在做衣服时&提供事情发生的背景，因此用过去进行时。
2) As she ___ the newspaper, Granny ___ asleep.
read； was falling　B. was reading； fell　C. was reading； was falling　D. read；fell
答案B.句中的as = when, while，意为&当……之时&。描述一件事发生的背景时，用过去进行；一个长动作发生的时候，另一个短动作发生。句意为 &在她看报纸时，奶奶睡着了。&句中的 fell (fall的过去时)，是系动词，后跟形容词，如：fall sick。
verb将来进行时
1) 概念：表示将来某时进行的状态或动作，或按预测将来会发生的事情。
She'll be coming soon.
I'll be meeting him sometime in the future.
注意：将来进行时不用于表示&意志&，不能说 I'll be having a talk with her.
2）常用的时间状语
Soon, tomorrow, this evening，on Sunday, by this time，tomorrow, in two days, tomorrow evening
By this time tomorrow, I'll be lying on the beach.
verb时态的相互代替与比较
一般现在时代替将来时
时间状语从句，条件句中，从句用一般现在时代替将来时
When, while, before, after, till, once, as soon as, so long as, by the time, if, in case (that), unless, even if, whether, the moment, the minute, the day, the year, immediately
He is going to visit her aunt the day he arrives in Beijing. 他一到北京，就去看他姨妈。
(1）He said he________me a present unless I_______ in doing the experiment.
A. had not succeeded　B. succeed
C. succeed　 D. will succeed.
答案B. 在时间，条件或让步主语从句中一般不用将来时。本题有He said，故为过去式。主句用将来时，故选B. 此处用一般过去式代替了过去将来时。
(2) 表示现在已安排好的未来事项，行程等活动。
The museum opens at ten tomorrow.　博物馆明天10点开门。(实际上每天如此。)
一般现在时代替过去时
1 )&书上说&，&报纸上说&等。
The newspaper says that it's going to be cold tomorrow.
报纸上说明天会很冷的。
2) 叙述往事，使其生动。
Napoleon's army now advances and the great battle begins.
一般现在时代替完成时
1) 有些动词用一般现在时代替完成时：
hear, tell, learn, write , understand, forget, know, find , say,　remember.
I hear (= have heard) he will go to London.
I forget (=have forgotten) how old he is.
2) 句型 & It is … since…&代替&It has been … since …&
3) It is (= has been) five years since we last met.
一般现在时代替进行时
1) 句型：Here comes… ； There goes…
Look, here comes Mr. Li.
现在进行时代替将来时
1) 表示即将发生的或预定中计划好的活动。
Are you staying with us this weekend? 这周和我们一起度周末吗?
We are leaving soon.　 我们马上就走。
2) 渐变动词，如：get, run, grow, become, begin及die。
He is dying.
用一般过去时代替完成时
1)　两个动作如按顺序发生，又不强调先后，或用then，and，but 等连词时，多用一般过去时。
When she saw the mouse，she screamed.
My aunt gave me a hat and I lost it.
2 ) 两个动作相继发生，可用一般过去时；如第一个动作需要若干时间完成，用过去完成时。
When I heard the news, I was very excited.
3)　叙述历史事实，可不用过去完成时，而只用一般过去时。
Our teacher told us that Columbus discovered America in 1492.
比较过去时与现在完成时
1）过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。
2）过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。
一般过去时的时间状语:
yesterday, last week，…ago, in1980, in October, just now, 具体的时间状语
共同的时间状语:
this morning, tonight,this April, now, once，before, already, recently，lately
现在完成时的时间状语
for, since, so far, ever, never, just, yet,　till / until, up to now, in past years, always,
不确定的时间状语
3）现在完成时可表示持续到现在的动作或状态，动词一般是延续性的，
如live, teach, learn, work, study, know.
过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。
I saw this film yesterday.
（强调看的动作发生过了。）
I have seen this film.
（强调对现在的影响，电影的内容已经知道了。）
Why did you get up so early?
（强调起床的动作已发生过了。）
Who hasn't handed in his paper?
（强调有卷子，可能为不公平竞争。）
She has returned from Paris.
她已从巴黎回来了。
She returned yesterday.
她是昨天回来了。
He has been in the League for three years.
(在团内的状态可延续)
He has been a League member for three years.
(是团员的状态可持续)
He joined the League three years ago.
( 三年前入团，joined为短暂行为。)
I have finished my homework now.
---Will somebody go and get Dr. White?
---He's already been sent for.
句子中如有过去时的时间副词（如 yesterday, last, week, in 1960）时，不能使用现在完成时，要用过去时。
（错）Tom has written a letter to his parents last night.
（对）Tom wrote a letter to his parents last night.
verb动词的语态
语态有两种：主动语态和被动语态。
主语是动作的发出者为主动语态；主语是动作的接受者为被动语态。
1）若宾语补足语是不带to 的不定式，变为被动语态　时，该不定式前要加&to&。此类动词为感官动词。
feel, hear, help, listen to, look at, make, observe, see, notice, watch
The teacher made me go out of the classroom.
--& I was made to go out of the classroom (by the teacher).
We saw him play football on the playground.
--& He was seen to play football on the playground.
2）情态动词+ be +过去分词，构成被动语态。
Coal can be used to produce electricity for agriculture and industry.
let 的用法
1）当let后只有一个单音节动词，变被动语态时，可用不带to 的不定式。
They let the strange go.---& The strange was let go.
2） 若let 后宾补较长时，let 通常不用被动语态，而用allow或permit 代替。
The nurse let me go to see my classmate in the hospital.
----& I was allowed / permitted to see my classmate in the hospital
短语动词的被动语态
短语动词是一个整体，不可丢掉后面的介词或副词。
This is a photo of the power station that has been set up in my hometown.
My sister will be taken care of by Grandma.
Such a thing has never been heard of before..
表示&据说&或&相信& 的词组
believe, consider, declare, expect, feel , report, say, see, suppose, think, understand
It is said that…　 据说
It is reported that… 据报道
It is believed that…　大家相信
It is hoped that…　大家希望
It is well known that… 众所周知
It is thought that…　大家认为
It is suggested that…　据建议
It is taken granted that…　 被视为当然
It has been decided that… 大家决定
It must be remember that…务必记住的是
It is said that she will leave for Wuhan on Tuesday.
verb语态的注意事项
不用被动语态的情况
1) 不及物动词或动词短语无被动语态：
appear, die disappear, end (vi. 结束), fail, happen, last, lie, remain, sit, spread, stand
break out, come true, fall asleep, keep silence, lose heart, take place.
After the fire, very little remained of my house.
比较： rise, fall, happen是不及物动词；raise, seat是及物动词。
(错) The price has been risen.
(对) The price has risen.
(错) The accident was happened last week.
(对) The accident happened last week.
(错) The price has raised.
(对) The price has been raised.
(错) Please seat.
(对) Please be seated.
要想正确地使用被动语态，就须注意哪些动词是及物的，哪些是不及物的。特别是一词多义的动词往往有两种用法。解决这一问题唯有在学习过程中多留意积累。
2) 不能用于被动语态的及物动词或动词短语：
fit, have, hold, marry, own, wish, cost, notice, watch agree with, arrive at / in, shake hands with, succeed in, suffer from, happen to, take part in, walk into, belong to
This key just fits the lock.
Your story agrees with what had already been heard.
3) 系动词无被动语态：
appear, be become, fall, feel, get, grow, keep, look, remain, seem, smell, sound, stay, taste, turn
It sounds good.
4) 带同源宾语的及物动词，反身代词，相互代词，不能用于被动语态：
die, death, dream, live, life
She dreamed a bad dream last night.
5) 当宾语是不定式时，很少用于被动语态。
(对) She likes to swim.
(错) To swim is liked by her.
主动形式表示被动意义
1)wash, clean, cook, iron, look, cut, sell, read, wear, feel, draw, write, sell, drive…
The book sells well.　这本书销路好。
This knife cuts easily.　 这刀子很好用。
2)blame, let(出租), remain, keep, rent, build
I was to blame for the accident.
Much work remains.
3) 在need, require, want, worth (形容词), deserve后的动名词必须用主动形式。
The door needs repairing.= The door needs to be repaired.
This room needs cleaning. 这房间应该打扫一下。
This book is worth reading.　这本书值得一读。
4) 特殊结构：make sb. heard / understood (使别人能听见/理解自己)，have sth. done ( 要某人做某事)。
被动形式表示主动意义
be determined, be pleased, be graduated (from), be finished, be prepared (for), be occupied (in), get marries
He is graduated from a famous university.
他毕业于一所有名的大学。
注意： 表示同某人结婚，用marry sb. 或get married to sb. 都可。
He married a rich girl.
He got married to a rich girl.
need/want/require/worth
注意：当 need, want, require, worth(形容词)后面接doing也可以表示被动。
Your hair wants cutting.　你的头发该理了。
The floor requires washing. 地板需要冲洗。
The book is worth reading.　这本书值得一读。
The library needs___, but it'll have to wait until Sunday.
A. cleaning　 B. be cleaned　 C. clean　 D. being cleaned
答案A. need (实意) +n /to do，need (情态)+ do，当为被动语态时，还可need + doing. 本题考最后一种用法，选A。如有to be clean 则也为正确答案。
典：done，&不可能已经&。must not do 不可以（用于一般现在时)。
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