编辑:sx_wangha
2012-09-14
1、 一般现在时
(1) 表示经常发生的动作或现在存在的状态,常与sometimes, always, often, every day等时间状语连用。如:Sometimes, we go swimming after school.
(2) 表示客观真理、科学事实等。如:The earth goes round the sun.
2、 现在进行时
(1) 表示说话时或现阶段正在进行的动作,常与now, at present等时间状语连用。如:
What are you doing now?
(2) 和always, continually等连用,表一种经常反复的动作,常含有某种情感。如:
He is always doing good deeds.
3、 现在完成时
主要表示动作发生在过去,对现在仍有影响,或动作一直延续到现在,或可能还要继续下去,常与just, already, so far, once, never 等词连用。如:Have you ever been to Beijing?
4、一般将来时
表示将来某一时间要发生的动作或存在的状态,常与tomorrow, next year等连用。如:
I'll meet you at the school gate tomorrow morning.
We're going to see a film next Monday.
5、一般过去时
表示在过去某一时间或某一阶段内发生的动作或存在的状态,常与yesterday, last year, in 1998, a moment ago等词连用。如:It happened many years ago.
6、过去进行时
表示过去某一时刻或某一时期正在发生的动作。如:
What were you doing this time yesterday?
7、 过去完成时
表示在过去某一时间或动作之前已经发生或完成了的动作。如:
The train had already left before we arrived.
8、一般过去将来时
表示说话人从过去的角度来看将来发生的动作。如:
He said he would come, but he didn't.
9、被动语态
时/式 |
一般 |
进行 |
完成 |
现在 |
am |
am |
has |
过去 |
was |
was |
had been given |
将来 |
shall |
|
shall |
过去将来 |
should |
|
should |
II.例题
例1 I learned that her father ____ in 1950.
A had died B died C dead D is dead
解析:该题正确答案为B。从句中的谓语动词动作虽然发生在主句谓语动词的动作之前,但因从句中有明确的过去时间状语in 1950, 所以不用过去完成时态,而用一般过去时态。
例2 The five-year-old girl ____ by her parents.
A is looked B has looked for
C is being looked for D has been looked
解析:该题正确答案为C。在带有介词的动词短语用于被动语态句中,介词不能省,否则就变成了不及物动词短语,而不能用于被动语态的句子中。
(五)动词虚拟语气
I. 要点
表示说的话不是事实,或者是不可能发生的情况,而是一种愿望、建议或与事实相反的假设等。一般常用于正式的书面语中。
1、 虚拟语气的构成
情景 |
条件从句的谓语动词 |
主句的谓语动词 |
与现在事实相反 |
动词过去式 (be要用were) |
should |
与过去事实相反 |
had +过去分词 |
should |
与将来事实相反 |
1、动词过去时 |
should |
注:如果条件从句谓语动词包含有were或had, should, could有时可将if省去, 但要倒装。如:
Had you (If you had) invited us, we would have come to your party.
2、 虚拟语气在各种从句的应用
(1) 在主语从句中用来表示惊奇、惋惜、理应如此等,其谓语形式是"should(可省) +动词原形",常用于以下三种句型中。
句型一:It is necessary (important, natural, strange, etc) that…
句型二:It is a pity (a shame, no wonder, etc) that…
句型三:It is suggested (requested, proposed, desired, etc) that…
如: It is strange that he (should) have done that.
It is a pity that he (should) be so careless.
It is requested that we (should) be so careless.
(2) 在宾语从句中用于suggest, propose, move, insist, desire, demand, request, order, command等动词后的宾语从句中,表间接的命令和建议。其谓语形式是"(should)+动词原形"。如:
I suggest that we (should) go swimming.
(3) 在表语从句中,表示间接的命令,要求、请求、建议、决定等,主句中的主语通常是suggestion, proposal, request, orders, idea等。从句谓语形式是"(should)+动词原形"。如:
His suggestion is that we (should) leave at once.
(4) 在同位语从句中,谓语形式是"(should)+动词原形"。如:
We received order that the work be done at once.
(5) 在It is time that…句型中,其谓语动词形式是"动词的过去式"或
"should +动词原形",should不可省。如:It's time (that) we went ( should go) to school.
II. 例题
例1 We had hoped that he ____ longer.
A stays B have stayed C stayed D would stay
解析:该题正确答案为D。had hoped表示"本希望",同样用法的动词还有think, expect等,后面的句子需用虚拟语气
例2 "Mary wants to see you today".
"I would rather she ____ tomorrow than today."
A comes B came C should come D will come
解析:该题正确答案为B。would rather后面的从句需用虚拟语气,用动词过去时表示。
例3 Had she been older, she ____ it better.
A had done
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