精选练习
1．You didn’t let rne drive. If we_______in turn，you_______so tired．
A. drove；didn’t get
B. drove；wouldn’t get
C．were driving；wouldn’t get D．had driven；wouldn’t have got
2．It’s high time we____________to the theater．
A. will
B. shall
C. are going to
D.went
3．It’s strange that they_______nothing about this matter．
A. know
B. would know C knows D．knew
4．He suggests we________to the cinema at once，otherwise we will be late．
A. must go
B. go
C. will go
D. would go
5．The general ordered that the thief__________．
A. be punished
B. would punish
C. would be punished
D. should punish
6．If only I___________how to operate a computer as yo do!
A. had known B．would know C. should know D．knew
7．When a pencil is partly in a glass of water，it looks as if it______·
A. breaks
B. has broken C．were broken D．had been broken
8．The chairman requested that____________．
A. the members studied the problem more carefully
B．the problems were more carefully studied
C．the problems could be studied with more care
D．the members study the problem more carefully
9．If I_____you，I________more attention to English idioms and phrases.
A. was；shall pay
B. am；will pay
C. would be；would pay D．were; would pay
10．We cannot imagine what our world________like without electric power．
A. is
B. will be
C. would be D．has been
11．There was a half smile on his face which suggested that
he______happy to have given his life
for his country．
A. was
B. should be
C. would be
D. were
12．We all agreed to her suggestion that we______to the Great Wall for sightseeing(观光)·
A. will go
B. go
C. shall go
D. should have gone
13．The young man insisted that he_______nothing wrong
and________free.
A. did; set
B. had done; should be set
C. do；be set D．had done；must be set
14．Without your help，I_______the exam 1ast term．
A. failed in
B. would have failed
C. wouldn’t pass D．would fail
15．I lost your address，otherwise I________you long before．
A. had visited
B. have visited
C. would have visited
D. should visit
练习答案
1—5．DDABA 6—10．DCDDC 11—15．ABBBC 练习解析
1．本句是对过去情况的虚拟。
意为：如果我们轮流开车的话，你就不会那么累了。
对过去虚拟，if条件句用过去完成式，had driven，主句用wouldn’t have got。
选D。
2．It’s time+从句，从句用虚拟语气。
句中动词用过去式，或用should do。
选D。
3．It is+某些标志性形容词+that从句，从句用虚拟语气，动词形式为(should)do。
选A。
4．suggest，order，demand，insist等表示建议、命令、要求、坚持的词后加宾语从句，要用虚拟语气，动词形式为(should)do。
选B。
5．suggest，order，demand，insist等表示建议、命令、要求、坚持的词后加宾语从句，要用虚拟语气，动词形式为(should)do。
这里贼是“被惩罚”，要用被动式，(should)be punished。
选A。
6．If only引导的句子，对现在的情况表示虚拟，用过去时。
选D。
全句意为“要是我象你一样懂得怎样操作计算机就好了。
”
7．as if引导状语从句，用一般过去时表示对现在情况的虚拟。
选C。
全句意为：当把铅笔放到一杯水中时，它看上去好像断了。
broken过去分词作语，表示“断的状态”。
8．suggest，request，order，demand，insist等表示建议、命令、要求、坚持的词后加宾语从句，要用虚拟语气，动词形式为(should)do。
选D。
9．对现在情况虚拟的句子，条件句用一般过去时，be动词要用were，主句用would+动词原形。
选D。
10．本题考查含蓄虚拟结构。
without短语相当于一个条件句if our world had no electric power．对现在或将来情况的虚拟，主句用“would+动词原形”。
选C。
11．suggest在作“表明、暗示”解释时，后面的从句不用虚拟语气。
选A。
全句意为“他脸上微微的笑容表明他很高兴将自己的生命献给了国家。
”
12．表示“建议”、“要求”、“命令”等名词后面的主语从句、表语从句及同位语从句中的谓语动词要用虚拟语气，谓语动词形式为(should)do。
题中that we．．．作suggestion的同位语从句。
本句中“我们”还“没有去”，不能用完成式，排除D。
选B。
13．insist表示“坚持认为”时，后面的从句不用虚拟语气。
本句中第一个空正是这种情况。
而第二个空表示“坚持要做某事”，则应该用虚拟语气，谓语动词形式为(should)do。
选B。
14．without短语相当于一个条件句“如果没有你的帮助”。
从last term(上学期)可以判断出，这是对过去情况的虚拟，用would have done。
选B。
15．本句意为：我丢了你的地址，否则我很久前就去拜访你了。
对过去情况的虚拟，用would have done。
选C。