1.
一般现在时
的用?/p>
1
?/p>
经常性或习惯性的动作,常与表示频腮度的时间状语连用?/p>
时间状语?/p>
every? sometimes, at? on Sunday
?/p>
例如?/p>
I leave home for school at 7 every morning.
每天早上我七点离开家?/p>
2
?/p>
客观真理,客观存在,科学事实。例如:
The earth
moves around the sun.
地球绕太阳转动?/p>
Shanghai lies in the east of China.
上海位于中国东部?/p>
3
?/p>
表示格言或警句?/p>
例如?/p>
Pride
goes before a fall.
骄者必败?/p>
注意:此用法如果出现?/p>
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?/p>
例:
Columbus
proved that the earth is round.
哥伦布证实了地球是圆的?/p>
4
?/p>
现在时刻的状态、能力、性格、个性。例如:
I don't want so much.
?/p>
不要那么多?/p>
Ann writes good English but does not speak well.
安英语写得不错,讲的可不行?/p>
比较?/p>
Now I put the sugar in the cup.
把糖放入杯子?/p>
I am doing my homework now.
我正在做功课?/p>
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?/p>
第二句中?/p>
now
是进行时的标志,
表示正在进行的动作的客观状况?/p>
所以后句用一般现在时?/p>
2.
一般过去时的用?/p>
1
?/p>
在确定的过去时间里所发生的动作或存在的状态。例如:时间状语有:
yesterday, last week, an hour ago, the other day, in 1982
等。例
如:
Where did you go just now?
刚才你上哪儿去了?/p>
2
?/p>
表示在过去一段时间内?/p>
经常性或习惯性的动作?/p>
例如?/p>
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?/p>
Whenever the Browns went during their visit, they were
given a warm welcome.
那时?/p>
布朗一家无论什么时候去?/p>
都受到热烈欢迎?/p>
3
?/p>
句型?/p>
It is time for sb. to do sth "
?/p>
…?/p>
时间?/p>
" "
?/p>
…?/p>
?/p>
"
。例如:
It is time for you to go to bed.
你该睡觉了?/p>
It is time that sb. did sth. "
时间已迟?/p>
" "
早该
…?/p>
?/p>
"
,例?/p>
It is time you went
to bed.
你早该睡觉了?/p>
would
?/p>
had
?/p>
rather sb. did sth.
表示
'
宁愿某人做某?/p>
'
。例如:
I'd rather you came tomorrow.
还是明天来吧?/p>
4
?/p>
wish, wonder, think, hope
等用过去时,作试探性的询问、请求、建议等,而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。例如:
I thought you might have some.
我以为你想要一些?/p>
比较?/p>
Christine was an invalid all her life.
(含义:
她已不在人间
?/p>
?/p>
Christine has been an invalid all her life.
(含义:她现在还活着?/p>
Mrs. Darby lived in Kentucky for seven years.
(含义:达比太太已不
再住在肯塔基州?/p>
?/p>
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?/p>
用过
去时表示现在,表示委婉语气?/p>
1
)动?/p>
want, hope, wonder, think, intend
等。例如:
Did you want anything else?
您还要些什么吗?/p>
I wondered if you could help me.
能不能帮我一下?/p>
2
)情态动?/p>
could, would
。例如:
Could you lend me your bike?
你的自行车,
能借用一些吗?/p>
3.
一般将来时
1
?/p>
shall
用于第一人称,常?/p>
will
所代替?/p>
will
在陈述句中用于各人称,在征求意见时常用于第二人称?/p>
例如?/p>
Which paragraph shall I read first
?/p>
我先读哪一段呢?/p>
Will you be at home at seven this evening?
今晚七点回家好吗?/p>
2
?/p>
be
going to +
不定式,
表示将来?/p>
a.
主语的意图,
即将做某事?/p>
例如?/p>
What are you going to do tomorrow?
明天打算作什么呢?/p>
b.
计划?/p>
安排要发生的事?/p>
例如?/p>
The play is going to be produced next month
?/p>
这出戏下月开播?/p>
c.
有迹象要发生的事?/p>
例如?/p>
Look at the dark
clouds, there is going to be a storm.
看那乌云,快要下雨了?/p>
3
?/p>
be +
不定式表将来,按计划或正式安排将发生的事。例如:
We are
to discuss the report next Saturday.
我们下星期六讨论这份报告?/p>
4
?/p>
be about to +
不定式,
意为马上做某事?/p>
例如?/p>
He is about to leave
for Beijing.
他马上要去北京?/p>
注意?/p>
be about to do
不能?/p>
tomorrow, next week
等表示明确将来时的时间状语连用?/p>
4.
一般现在时
表将?/p>
1
)下列动?/p>
come, go, arrive, leave, start, begin, return
的一般现在时可以表示将来,主要用来表示在时间上已确定或安排好?/p>
事情。例如:
The train leaves at six tomorrow morning.
火车明天上午六点开?/p>
When does the bus star? It stars in ten minutes.
汽车
什么时候开?十分钟后?/p>
2
?/p>
?/p>
here, there
等开始的倒装句,
表示动作正在进行?/p>
例如?/p>
Here comes the bus. = The bus is coming.
?/p>
来了?/p>
There goes the bell. = The bell is ringing.
铃响了?/p>
3
?/p>
在时间或条件句中?/p>
例如?/p>
When Bill comes
(不?/p>
will come
?/p>
, ask him
to wait for me.
比尔来后,让他等我?/p>
I'll write to you as soon as I arrive there.
我到了那里,就写信给你?/p>
4
)在动词
hope, take care
that, make sure that
等的宾语从句中?/p>
例如?/p>
I hope they have a nice time next week.
我希望他们下星期玩得开心?/p>
Make sure that the
windows are closed before you leave the room.
离开房间前,务必把窗户关了?/p>
5.
用现在进行时表示将来
下列动词
come, go, arrive,
leave, start, begin, return
等现在进行时可以表示将来?/p>
例如?/p>
I'm leaving tomorrow.
明天我要走了?/p>
Are you staying here till next week?
你会在这儿呆到下周吗?/p>
6.
现在完成?/p>
现在完成时用来表示之前已发生或完成的动作或状态,其结果的影响现在还存在;也可表示?/p>
续到现在的动作或状态。其构成?/p>
have
?/p>
has
?/p>
+
过去分词?/p>
7.
比较一般过去时与现在完成时
1
)一般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?/p>
2
)一般过去时常与
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?/p>
或无时间状语?/p>
一般过去时的时间状语:
yesterday, last week
?/p>
…ago,
in1980, in October, just now
等,
现在完成时的时间状语?/p>
for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always
等,皆不确定的时间状语?/p>
共同的时间状语:
this morning, tonight, this April, now, already, recently, lately
等?/p>
3
)现在完成时可表?/p>
持续到现在的动作或状态,
动词一般是延续性的?/p>
?/p>
live, teach, learn, work, study, know.
?/p>
一般过去时常用的非持续性动词有
come, go,
leave, start, die, finish, become, get married
等?/p>
例如?/p>
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?/p>
Why did you get up so early?
?/p>
强调起床的动作已发生过了?/p>
Who hasn't handed in his paper?