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第六章 动词篇之时态
一、一般现在时
1.一般现在时表示经常发生或习惯性的动作或状态及客观事实和普遍真理。一般现在时常以动词原形表示,但当主语是第三人称单数时,动词词尾加s或es。
2.句型结构:主语+v.(包括be动词)+宾语+...
She is an engineer.
He has breakfast at 6:00 every day.
__________
3.适用条件:
(1)一般现在时通常与always,often,usually,every day,sometimes,once a week 等时间状语连用。
I always watch TV at 8:00 in the evening.
They go home once a week.
We usually do our homework at home.
(2)表示客观事实或普遍真理。
The light travels faster than the sound.
(3)表示永久性的动作或状态。
He lives in the country.
(4) 另外,在时间状语从句和条件状语从句中,常用一般现在时代替将来时。
If you ask him,he will help you.
4.第三人称单数动词变化规则。
(1)一般情况下在动词词尾加s。
come—comes speak—speaks
live—lives work—works
(2)以o,s,x,ch,sh结尾的单词,一般在词尾加es。
do—does go—goes finish—finishes brush—brushes fix—fixes pass—passes watch—watches
(3)以“辅音字母+y”结尾的单词,变y为i加es。
study—studies carry—carries cry—cries
(4)以“元音字母+y”结尾的单词,在词尾直接加s。
play—plays stay—stays
5.否定句和疑问句。
(1)He is an engineer.
He isn't an engineer.
—Is he an engineer?
—Yes,he is./ No,he isn't.
(2)We get up at 7:30 in the morning.
We don't get up at 7:30 in the morning.
—Do you get up at 7:30 in the morning?
—Yes,we do./ No,we don't.
二、一般过去时
1.一般过去时表示发生在过去的动作或存在的状态,通常与表示过去的时间状语yesterday,last night,some years ago,in 1990,in those days等连用。
I was a student 6 years ago.
I went to Beijing last year.
They saw a film last night.
2.句型结构:主语+v.过去时+宾语+...
He left for Shanghai yesterday.
I cleaned the room half an hour ago.
When I was a child,I often played football in the park.
3.否定句和疑问句。
(1)He was busy yesterday.
He wasn't busy yesterday.
—Was he busy yesterday?
—Yes,he was./ No,he wasn't.
(2)He smoked last year.
He didn't smoke last year.
—Did he smoke last year?
—Yes,he did./No,he didn't.
4.动词过去式变化规则。
(1)一般情况下在动词词尾加ed。
work—worked call—called laugh—laughed
explain—explained finish—finished
knock—knocked
(2)以不发音的字母e结尾的单词直接加d。
live—lived change—changed smoke—smoked
die—died graduate—graduated
(3)以“辅音字母+y”结尾的单词,变y为i加ed。
study—studied carry—carried cry—cried
try—tried marry—married
(4)以“元音字母+y”结尾的单词直接加ed。
play—played stay—stayed
(5)以“一个元音字母+一个辅音字母”的重读闭音节结尾的单词应先双写这个辅音字母然后再加ed。
stop—stopped plan—planned pat—patted
(6)动词不规则变化:
do—did go—went come—came run—ran
write—wrote begin—began drink—drank
keep—kept leave—left sleep—slept make—made
lie—lay dig—dug eat—ate know—knew cut—cut set—set let—let read—read hurt—hurt
三、现在进行时
1.现在进行时表示现在或现在这段时间正在进行的动作。通常与now,at present 等时间状语连用。
We are waiting for you.
另外,现在进行时还可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. (说话时不一定在写,只处于写作的状态。)
2.基本结构:主语+be (am,is,are)+ v.ing +...
You are listening to me carefully now.
She is writing a report this week.
Look! They are dancing.
We are studying English at present.
It's raining hard now.
3.动词现在分词的构成
(1)一般动词直接在词尾加ing。
do—doing read—reading work—working
think—thinking study—studying go—going watch—watching jump—jumping
(2)以不发音的字母e 结尾的动词,应先去掉 e 然后加ing。
like—liking take—taking leave—leaving
live—living receive—receiving dance—dancing come—coming smoke—smoking write—writing
(3) 以“一个元音字母+一个辅音字母”的重读闭音节结尾的动词,应先双写这个辅音字母然后再加ing。
stop—stopping begin—beginning
dig—digging swim—swimming
run—running sit—sitting
(注意:listen—listening open—opening eat—eating
rain—raining sleep—sleeping)
四、过去进行时
1.表示过去某一时刻或某阶段时间正在进行的动作, 通常与 at 6:00 yesterday,at this/that time yesterday,when 引导的时间状语等连用。
2.句型结构:主语+be (was/were) +v.ing +...
It was raining at 7:00 the day before yesterday.
They were building a reservoir at this time last winter.
We were reading when the teacher came in.
We weren't reading that book.
Were you reading the book?
What were you doing when the teacher came in?
3.句型结构:主语+have/has+P.P(动词过去分词)
I've finished this work.
He has ever been to Australia.
I have not heard from her recently.
I have already read this book.
—Have you finished the work?
—Yes,I have./—No,I haven't.
What have you read recently?
五、现在完成时
1.表示过去发生的动作对现在造成的影响或结果。
2.表示过去某时间已经开始一直持续到现在的动作或状态,通常与时间状语up to now,in the past,recently,by...,for 5 years,since 1994,so far,already,yet,ever,just等连用。
4.过去分词的构成 (变化规则同过去式的变化规则)
常用的不规则动词变化如下:
A—A—A型
cost—cost—cost
A—A—B型
beat—beat—beaten
A—B—A型
become—became—become
A—B—B型
hear—heard—heard
A—B—C型
fly—flew—flown
六、一般将来时
1.表示将来发生的动作或存在的状态,常与表示将来的时间状语tomorrow,the day after tomorrow,next Sunday,soon,in a few days等连用。
2.主语+will/shall+v.原形+...(shall常用于第一人称)
I shall go to Shanghai tomorrow.
They will have a meeting next week.
—Will she be 20 years old?
—Yes,she will./ No,she won't.
3.be (am,is,are) going to
They're going to swim next Sunday.
What are they going to do next Sunday?
4.be about to+v.原形 (此时通常不与表示将来的时间状语连用)
I am about to leave school.
They are about to set out.(√)
They are about to set out soon.(×)
5.另外:还可以用其他时态表将来
(1)动词come,go,arrive,leave,start,begin,return用一般现在时表示将来。主要用来表示在时间上已确定或安排好的事情(如列车时刻表等)。
The train leaves at six tomorrow morning.
(2)在if,as soon as,until,when等引导的状语从句中用一般现在时表示将来。
When Bill comes,ask him to wait for me.
(3)现在进行时表将来。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.
[即学即练]
Ⅰ.单句语法填空
1.The sun always __________ (rise) in the east.
2.He often ____________ (wash) his clothes on Sundays.
4.I ______________ (read) some newspaper at seven yesterday evening.
5.Now he ____________ (write) a book about New York.I don't think he will finish it.
rises
washes
was reading
is writing
6.Zhang Hua does a lot of housework every evening,but now he _________ (help) his schoolmates with their lessons.
7.How long ago ______ (do) you stop playing football?
8.It ______________________ (rain) hard when I left my house.
9.It is reported that the railway ______________ (finish) in three years.
10.Our team ______________ (win) every match so far this year,but we still have three games to play.
is helping
did
was raining
will be finished
has won
11.I _____________ (finish) my homework just now,so we can have a talk.
12.Where did you study before you _____ (come) to this middle school?
13.My uncle ____________________ (work) in that factory since 1958.
14.His grandfather _________________________ (die) for thirty years.
15.Since you don't want to go,I ______________ (go) alone.
16.It's time you ______________________________ (have) a holiday.
have finished
came
has worked
has been dead
will go
had/should have
17.His parents did not know why he __________ (do) his homework so quickly.
18.Yesterday a man ______ (hit) my car.
19.If we study hard,we __________________ (pass) the exam.
20.Bill said that he __________________ (do) his homework at half past seven yesterday evening.
had done
hit
will pass
was doing
Ⅱ.单句写作
1.到上个学期为止,我们已经学了好几年的英语了。
__________________________________________________________
2.老师进教室的时候,学生们正在写作业。
____________________________________________________________________________________________________________________
3.上海位于中国东部。
__________________________________________________________
By the end of last term we had studied English for several years.
When the teacher came into the classroom,the pupils were doing their
exercises.
Shanghai lies in the east of China.
4.她来时我将把这件事告诉她。
__________________________________________________________
5.谁还没有交试卷?
__________________________________________________________
When she comes,I'll tell her about it.
Who hasn't handed in his paper?
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