大学英语三级语法知识总结汇总

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）：
条件从句主句
与现在相反did (be were) would/ should/ might/ could do
与将来相反did (be were) would/ should/ might/ could do
与过去相反had done would/ should/ might/ could have done
例句
If we left (leave) now, we should arrive in time.
If they hadn’t gone on vacation, their house wouldn’t have been broken (break) into.
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, demand, advise, propose, order, arrange, insist, command, require, request, desire …… that ＋(should) do 例如He suggested that we should leave early.
My suggestion is that we should tell him.
b. It is (was) 形容词/名词that …… (should) do/
例如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) …动词过去时…
例如It’s time we left.例如It is time we went to bed.
2 would rather/sooner 宁愿
as if/ though 好像
would rather/sooner 谓语⽤过去时与现在或者将来相反
as if/ though 谓语⽤过去完成时与过去相反
4．练习
1. I _______ try it again if I_______you.
A. will；am
B. should；am
C. would；were
D. would；had been
2. If it _______ not for the water，the plants _______live.
A. were；would not
B. is；could not
C. were；could
D. did；could not
3. If I _______ that chance to show my ability, I _______the president of this school.
A. have not had；could not become
B. had not had；would not have become
C. did not have；could not become
D. doesn’t have；will not 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
B. is not；can not spend
C. had not been；would not have spent
D. have not been；will not spend
6. Where _______ you go if war _______?
A. will；breaks out
B. do；will break out
C. would；were to break out
D. will；is to break out
7. She wishes she _______ that humiliating thing.
A. doesn’t do
B. didn’t do
C. haven’t done
D. hadn’t done
8. The chairman suggested that the meeting _______ put off.
A. can be
B. be
C. is
D. will be
9. It is vital that he _______ immediately.
A. should go
B. must go
C. goes
D. went
10. It is time we _______do our homework.
A. begin to
B. can begin to
C. began to
D. will begin 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。

) ⼆．动词的时态
2. 时间状语与动词时态的搭配
⼀定的时态往往和⼀定的时间状语连⽤。

always ,usually, sometimes, ⼀般现在时do/does am is are
last week, yesterday, a few days ago ⼀般过去时did was/ were next week, tomorrow, in a week, this year ⼀般将来时will do now, at present, at this moment 现在进⾏时be +doing
so far, up to now, by the time, since的主句现在完成时has/have done
3. 练习，⽤动词的适当形式填空
1. He _______ (be) eighteen next year.
2. It _______ (rain) every day so far this month.
3. Mozart _______ (write) more than 600 pieces of music.
4. If it _______ (rain) tomorrow，we’ll have to stay at home.
5. How fast _______ he _______ (drive) when the accident happened?。