电与磁系列顺口溜
电与磁系列顺口溜 (1)磁体周围有磁场,北出南回磁感...
肯定句式: 主语+动词原形/动词的第三人称单数+其他
否定句式: 主语+(助动词) don't/doesn't +动词原形+其他
一般疑问句式: Do/Does+主语+动词原形+其他
简略回答: (肯)Yes,主语+do/does (否)No,主语+do/does not
缩写形式: don't = do not doesn't = does not
eg.
He often goes swimming in summer.
I usually leave home for school at 7 every morning.
1)表示经常的、习惯性的动作或存在的状态,常与表示频度的副词连用。
常用的频度副词有: always
、often
、usually
、seldom
、never
、sometimes
、every week (day, year, month…)
、once a week
、on Sundays
频度副词在句中通常放在行为动词之前,系动词、助动词之后。
eg.
He often goes swimming in summer.
I usually leave home for school at 7 every morning.
2)表示主语具备的性格、特征和能力等。
eg.
All my family love football .
My sister is always ready to help others .
Ann writes good English but does not speak well.
3)表示客观真理、客观存在、自然现象。
eg.
The earth moves around the sun.
Shanghai lies in the east of China.
4)表示按计划或安排好的,或将要发生的动作,可用一般现在时表将来。
但只限于start,begin,leave,go,come,arrive,return,take place等。
eg.
The train leaves at six tomorrow morning.
He comes back tonight.
5)在复合句中,当主句是一般将来时,时间或条件状语从句的谓语动词只能用一般现在时来表示将来要发生的动作。
eg.
I'll tell him the news when he comes back.
If you take the job , they will talk with you in greater details.
肯定句式: 主语+动词过去式+其他
否定句式: 主语+(助动词)didn’t +动词原形+其他
一般疑问句式: Did+主语+动词原形+其他
简略回答: (肯)Yes,主语+did (否)No,主语+did not
was/were+not
was/were提前,放于句首
didn’t+do(动词原形)
Did+主语+do(动词原形)
1)表示过去某一时刻或某一段时间里所发生的动作或情况。常和表示过去的时间状语yesterday, just now, the other day, in 1982, ago, an hour ago, long long ago, the day before yesterday, last week(year, night, month…), at the age of 5, one day, once upon a time等连用
eg.
Where did you go just now?
After a few years, she started to play the piano.
2)表示在过去,经常或反复发生的动作。常与often,always等表示频度的副词连用。
eg.
When I was a child, I often played football in the street.
我是个孩子的时候,常在马路上踢足球。
3)一般过去式也可与today,this week,this month,this year等表现在的时间状语连用,但这些时间状语须指过去的时间,决不包含“现在”“此时此刻”的意思。
eg.
Did you see him today?今天你看见他了吗?
肯定句式:主语+助动词will+动词原形+其他
否定句式:主语+助动词will+动词原形+not+其他
一般疑问句式:助动词Will+主语+动词原形+其他
简单回答:在口语中,will在名词或代词后常缩为’ll,wii not常简缩为won’t。
在疑问句中,主语为第一人称时(I和we)时,常用助动词shall。
eg.
She’ll go to play basketball.
Shall we go to the zoo?
肯定句式:主语+be going to +动词原形+其他
否定句式:主语+be not going to +动词原形+其他
一般疑问句式:Be+主语+going to+动词原形+其他
简略回答:(肯)Yes,主语+be (否)No,主语+be not
1)表示将来某个时间要发生的动作或存在的状态,常与tomorrow, next day(week, month, year…), soon, in a few minutes, by…, the day after tomorrow等连用。
eg.
I'll meet you at the school gate tomorrow morning.
2)、表示说话人对于将来的看法、假设和推测,通常用于be afraid, be/feel sure, hope, know, think等后面的从句或与副词perhaps,possibly,maybe等连用。
eg.
I think she’ll go back home for supper.
Maybe she’ll go to the gym.
表示说话人的打算、计划、安排或根据迹象判断必然或很可能发生的事情。
eg.
What are you going to do tomorrow?
The play is going to be produced next month。
注意
:be going to 和will之间的区别。
在时间上:be going to通常表示马上要发生或相当快就要发生的事情;而will不指明任何具体时间,可以指遥远的未来。
He is going to be better.
He will be better.
— What are you going to do next Sunday?
— I'm going to go fishing.
— Where is the telephone book?
— I'll go and get it for you.
eg.
If you are going to make a journey, you'd better get ready for it as soon as possible.
Miss Gao will tell you the answer if you ask her.
eg.
We are to discuss the report next Saturday.
eg.
He is about to leave for Beijing.
am/is/are+动词的现在分词
1)表示现在(指说话人说话时)正在发生或进行的动作。常与now, right now, at this moment, at this time, these days等时间状语连用。注:如果句首有警示性动词look、listen等,主句的动词也与现在进行时连用。
eg.
We are waiting for you now.
Listen! The bird is singing in the tree.
2).表示现阶段(说话前后一段时间内),一直在进行的活动。说话时动作未必正在进行。
eg.
Mr. Trump is writing another novel. 他在写另一部小说。(说话时并未在写,只处于写作的状态。)
He is thinking about this problem.这些天来他一直在考虑这个问题。
3).表示反复发生的动作或持续存在的状态,常与always, constantly, forever 等词连用,往往带有说话人的主观色彩。
eg.
You are always changing your mind.
4).表示尚未完成的渐变过程,这样的动词有:get, grow, become, turn, run, go, begin等。
eg.
The leaves are turning red.
It's getting warmer and warmer.
5)、表示移位的动词,如go,come,leave,start,arrive等,其现在进行时可表将来。
eg.
I'm leaving tomorrow. 明天我要走了。
The train is arriving soon. 火车要到了。
注:不能用进行时态的动词
类别 | 举例 |
---|---|
感官类 | See,look,smell,hear,taste,notice,feel |
感觉类 | Love,agree,like,hate,want,fear,wish,prefer |
认知类 | Believe,think,understand,forget,remember |
存在类 | Appear,exist,lie,remain |
占有、从属类 | Have,own,contain,belong,possess,consist of |
短暂动作类 | Accept,receive,admit,decide,promise,give,finish |
肯定句:主语+助动词have(has)+动词过去分词-ed
否定句:主语+助动词have(has)+not(haven’t,hasn’t)+动词过去分词-ed
一般疑问句:Have(Has)+ 主语+动词过去分词-ed+?
特殊疑问句:疑问词+have(has)+ 主语+动词过去分词-ed+?
含义:现在完成时用来表示现在之前已发生或完成的动作或状态,但其结果却和现在有联系, 也就是说, 动作或状态发生在过去但它的影响现在还存在。
1)现在完成时往往同表示不确定的过去时间状语连用, 如already, yet, just, before, recently, lately等
eg.
Mr. Wang has just come back from America. 王先生刚从美国回来。
I haven’t seen much of him recently (lately).
We have seen that film before.
Have they found the missing child yet?
现在完成时中的时间状语:
★already通常用于肯定句中,意为―已经,位于行为动词之前, be动词、助动词之后。有时可放在疑问句句尾,表示惊讶。
eg.
We have already cleaned the classroom.
Have you finished it already?
★yet用于疑问句中表示―已经;用于否定句中,表示还(没)。
eg.
—Has he found his watch yet?他还没找到他的表吗?
—No, not yet. 是, 还没有。
★ever意为曾经,常用于疑问句或否定句中,位于助动词和过去分词之间,表示从过去到目前为止的时间。
eg.
Have you ever been there?你曾经去过那里吗?
Nothing has ever happened here. 这里未曾发生过什么事。
★never意为(曾经)从未、没有, 是否定副词,在句中位于助动词和过去分词之间。ever与否定词not连用相当于never。
eg.
I haven’t ever spoken to her. = I have never spoken to her. 我从未跟她讲过话。
★just意为―刚刚, 用于现在完成时, 表示行为刚刚过去, 位于助动词与过去分词之间。
eg.
He has just come back from school.他刚从学校回来。
★ just now意为―刚才, 表示过去某时, 用于一般过去时, 位于句首或句尾均可。
eg.
He came from school just now.他刚才从学校回来。
★for 和since的用法及区别。for 与一段时间连用,since 与时间点连用。注意:since 后接过去时的时间状语或过去时的句子。
eg.
I have been to Shanghai twice since 1970.
I haven’t seen her since she left Shanghai.
I saw Ping Ping six years ago. Since I havenever seen her.
★have/has gone to、have/has been to 和have/has been in的区别。
have/ has gone to 去了,在去某地的路上或在某地, 人还未回来
have/ has been to 曾经去过, 人已经回来了
have/ has been in 已经在, 常与一段时间连用
eg.
She has been to Shanghai before. 她以前曾去过上海。
She has been in Shanghai for ten years. 她在上海10年了。
Has he gone to Qingdao? 他去青岛了吗?但不能说 Have you gone to Qingdao?
2)、现在完成时还可用来表示过去发生的动作一直延续到现在,常带有for或since 等表示一段时间的状语。
eg.
Mr Wang has lived here since 1983.
I haven’t seen much of him recently (lately).
We have seen that film before.
Have they found the missing child yet?
3)、现在完成时瞬间动词即终止性动词不能与表示一段时间的状语连用。
常见终止性动词与延续性动词 (或状态动词) 的对应关系如下:
come / go / arrive / get / reach / move--- be in/at
open --- be open die --- be dead
close --- be closed become ---be
borrow --- keep put on --- wear
buy --- have leave ----- be away (from)
begin / start ----- be on fall asleep ---- be asleep
end/finish ----- be over catch a cold ----- have a cold
join the army ---- be in the army, be a soldier
join the Party---- be in the Party , be a Party member
eg.
汤姆买这支已有两年了。
- Tom bought this pen two years ago.
- Tom has had this pen for two years.
- Tom has had this pen since two years ago.
- Tom has had this pen since 2007
- It is two years since Tom bought this pen.
4).在表示“最近几世纪/ 年/ 月以来……”时间状语中,谓语动词用现在完成时。
in the past few years/months/weeks/days;over the past few years; during the last three months; for the last few centuries, through centuries; throughout history 等
5).表示“第几次做某事,”或在 “It is the best (worst, most interesting ) +名词 +that” 后面跟现在完成时。
eg.
This is my first time that I have visited China.
This is the most interesting film I have ever seen.
That is the only book that he has written.
6)have / has been to + 地点 意为“曾去过某地”,暗含目前已不在该地仅表示当事人的一种经历而已。
have / has gone to + 地点 “到了某地去了”,暗含“已离开原地去了某地”之意,但是否到达了某地尚不确定。
eg.
He has gone to Shanghai. 他去了上海。
He has been to Shanghai. 他去过了上海。
助动词had+动词过去分词
1)、表示在过去某一时间或动作以前已完成的行为或存在的状态。即发生的时间是过去的过去。常与“by the end of/by/before+过去时间”构成的短语连用。
eg.
The train had already left before we arrived.
He said that he had learned some English before.
By the end of last term, we had learned five English songs.
2)表示在过去某一动作之前就已经发生或完成了的动作;常用when,before,after等引导的从句作为动作发生时间先后的对比,先发生的动作用过去完成时,后发生的动作用一般过去时。
When I got to the railway station, the train had already left.
当我到达火车站时,火车已经开走了His father had worked in a TV factory for five years before he came here.
爸爸来这之前,在一家电视机厂工作了5年。
3)表示过去未曾实现的计划、愿望等。这种用法中常用的动词为hope, want,plan,wish, expect, think, intend, mean, suppose等。
eg.
We had hoped that you would come, but you didn't. 那时我们希望你能来,但是你没有来。
I had thought that all knew about it.我以为他们都知道这件事呢。
was/were+动词的现在分词(--ing)
1)表示过去某一时刻或某一段时间正在进行或发生的动作。动作发生的特指时间常用一个短语或时间状语从句来表明,如:at this time yesterday,at 7:00 yesterday ,last night ,from seven to nine ,at that time以when或while引导的时间状语从句等。
My family were watching TV at that time yesterday.
When I arrived,Tom was talking on the phone.
What were you doing at 9:00 o’clock yesterday morning.
注意:(1)以when引导的时间状语从句中,从句动作,主句用过去进行时,表示一个动作发生时,另一个动作正在进行。
When he called me , I was having dinner .
(2)以while引导的时间状语从句中,从句与主句的动作在过去某一时刻同时进行,while常译为“当……的时候,同时”。
Tom was doing his homework while his sister was watching TV .
2)、表移动的动词,如come, go, arrive, leave, start, begin, return等词的过去进行时,可以表示过去将要发生的动作。
eg.
She told me that she was going to Hainan for her holiday.
表示过去的某时以后将要发生的动作。但这个"将来"时间绝不会延伸到―现在;而仅限于―过去时间区域内。由此可以看出,含这个时态的句子常带一个表示―过去某个时间点的状语。这个状语或是一个短语,或是一个句子。这个时态常用于:
a)would/should+动词原形
b)was/were going to+动词原形
1)、表示从过去某时看将要发生的动作或存在的状态。常用于主句是一般过去时的宾语从句或间接引语中。
eg.
He said that he would finish his work before 9 o’clock.
他说他会在九点之前完成工作。When I thought about it , I wondered what their reaction would be .
当我考虑这件事时,我想知道他们的反应是什么。
2)、表示过去的某种习惯性动作,只能用would。
eg.
Whenever he has been in trouble, we would give him a hand.
每当他遇到困难时,我们总会伸出援助之手。
3)表示过去情况中的―愿望、―倾向,多用于否定句。
No matter how difficult the work was , he would keep on doing it until he accomplished it .
不管工作有多难,他总会坚持不懈地把它干完。They knew that we would never permit such a thing.
他们知道我们绝不会允许发生这样的事。Even after the lecture ended, the audience would not leave .
甚至在讲座结束之后,听众仍不肯离去。
30.The teachers __ the office for a few minutes when we arrived. We didn’t meet them.
A. had been away from B. had left C. have been away from D. have left
1-5 BBCCB
6-10 AAABC
11-15 CCBBC
16-20 ABCAB
21-25 CCDAB
26-30 CCCCA