大学英语三级语法知识总结汇总

三级语法考点归纳

一. 虚拟语气 1. if 句中虚拟形式 if 引导的非真实条件句(纯粹假设或发生的可能性不大) 条件 与现在相反 与将来相反 与过去相反 done 例句 If we left (leave) now, we should arrive in time. If they hadn ' t gone on vacation, their house wouldn 2. 原形虚拟： a. 表命令、决定、要求、建议等词语之后的that-分句中，用动词原形。 suggest, dema nd, advise, propose, order, arran ge, in sist, comma nd, require, request, desire that (should) do 例女口 He suggested that we should leave early. My suggesti on is that we should tell him. b. It is (was)形容词 /名词 that ......... (should) do/ 例女口 It is absolutely essential that all the facts be examined first. 3. 一些句型中的虚拟形式： 1. It ' s (high, about, the first, etc.) time (that)词过去时 … … 例如 It ' s time we left. 2 would rather/so oner as if/ though would rather/sooner 反 as if/ though 4•练习 1. I _______ t ry it agai n if I ______ you.

A. will ； am

B. should; am would ； had been 2. If it _______ n ot for the water , the pla nts _ A. were ； would not B. is ； could not could not 3. If I school.

A. have not had; could not become

从句 did (be > were) did (be * were) had done 主句 would/ should/ might/ could do would/ should/ might/ could do would/ should/ might/ could have 't have been broken (break) into.

例女口 It is time we went to bed.

宁愿 好像 谓语用过去时 与现在或者将来相 谓语用过去完成时 与过去相反 C. would ； were D. live.

C. were ；

could

D.

did ；

that chanee to show my ability, I the preside nt of this

B. had not had ； would not have

become

4. He _____ by that burglar if you ______ to save him.

A. might have been killed ； hadn 't come

B. will be killed ； didn 't come

C. may be killed ； did 't come

D. could be killed ； haven 't come

5. If it _____ for your help ， I _______ that hard time with so little money.

A. were not ； would not spend C. had not been ； would not have spent spend 6. Where _____ you go if war ______ ?

A. will ； breaks out

C. would ； were to break out

7. She wishes she _____ that humiliating thing.

A. doesn 't do

B. didn ' t do t done

8. The chairman suggested that the meeting put off.

A. can be

B. be

C. is 9. It is vital that he _____ immediately.

A. should go

B. must go

C. goes 10. It is time we _____ do our homework.

A. begin to

B. can begin to

C. began to 答案： 1. 选C 。表示与现在事实相反的假设（指现在的假设）（译文；如果我是你，我会再 试一次 ）

2选A 。表示与现在事实相反的假设（指现在的假设）。（译文：要是没有水，植物 就不能存活。 ）

3. 选B 。表示与过去事实相反的假设。

4 A 。表示与过去事实相反的假设。（译文：要不是你来救他，他早就被那个窃贼 杀了。 ）

5. C 。与过去事实相反的假设。（译：要没有你帮忙，我那点儿钱是无法度过那段 艰苦岁月的。 ）

6. 选C 。表示与将来事实相反的假设。（译文：要是战争爆发了，你会上哪儿去？）

7. 选D 。虚拟语气用于宾语从句。（译文：她真希望自己没有做过那件丢脸的事情。）

8. 选B 。虚拟语气用于表示“建议”等意义的动词后。 （译文：主席建议会议延

期举行。 ）

9. 选A 。虚拟语气用于主语从句（It is / was +形容词+ that 引导的分句）。

10. 选C 。虚拟语气用于定语从句It is time （that ）...句型。（译文：我们该开始做作 业了。 ）

.动词的时态

1.各个时态动词基本变形

C. did not have ； could not become

D. doesn 't have ； will not become B. is not ； can not spend D. have not been ； will not B. do ； will break out D. will ； is to break out C. haven 't done

D. hadn '

D. will be D. went D. will begin to