2015年公共英语三级考试考前经典语法辅导（4）

I. 要点

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.

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

+动词原形

would

与过去事实相反 had +过去分词 should

+have+过去分词

would

与将来事实相反 1、动词过去时

2、should +动词原形

3、were to +动词原形 should

+动词原形

would

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。www.examw.com

例3 Had she been older, she ____ it better.

A had done B might have done C might do D would do

解析：Had she been older = If she had been old. 故该题正确答案为B。

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