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正确答案：B

答案讲解：根据时间状语up to now（直到现在），我们可知本句的动词应用完成时态，所以答案为B，意思是“到目前为止我还不是很成功”。

15、The wheat ____________cut three days ago.

A. were B. has been C. Had D. was 正确答案：D 答案讲解：短语three days ago是一般过去时的时间状语，主语the wheat是不可数名词，所以应选D，意思是“麦子三天前就割了”。

Unit 3 将来时

1 One____________if one breaks the law.

A. will be punished B. will punish C. is being punished D. has been punished 正确答案：A

答案讲解：one 和punish之间是被动关系，应用被动语态。根据条件状语从句if one breaks the law可知punish这个动作没有发生，应该用一般将来时，所以答案为A，意思是“如果一个人触犯法律，就会受到惩罚”。

2、If you____________quiet, I'll tell you what happened. A. be B. are to be C. are D. will be 正确答案：C

答案讲解：如果主句是一般将来时，在条件状语从句中，通常用一般现在时代替一般将来时，所以本题应选C，意思是“如果你安静下来，我就告诉你发生了什么”。 3、Middle school boys____________not to smoke.

A. always tell B. are told always C. are always told D. is always told 正确答案：C

答案讲解：主语middle school boys是复数，而且与谓语动词tell之间是被动关系，这样可以排除A和D。副词always应该放在助动词和实义动词之间，所以应该选C，意思是“中学男生总是被告知不要抽烟”。

4、If you study hard, you____________the examination.

A. has passed B. are passing C. have passed D. will pass 正确答案：D

解析：分析句意，即“如果你好好学习，你就会通过考试”，可知pass这个动作还没有发生，应该用一般将来时，所以选D。

5、John does a lot of housework every evening, but now he ____________his schoolmates with their lessons.

A. help B. is helping C. helps D. has helped 正确答案：B

答案讲解：根据but后面的时间状语now可知这一动作正在进行中，应该用现在进行时，所以选B，意思是“约翰每天傍晚做很多的家务活，但是现在他正在帮助他的同学们复习功课”。 6、The song ____________by children.

A. is often sung B. was often sung C. sings D. has often sung 正确答案：A

答案讲解：主语the song 是单数，和谓语动词sing之间是被动关系，而副词often表明是经常发生的动作，应用一般现在时，所以答案为A，意思是“孩子们经常唱这首歌”。 7、By the end of 2020 China ____________much stronger and richer.

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A. will become B. would become C. is becoming D. will have become 正确答案：D

答案讲解：根据时间状语by the end of 2020可知本句表示在未来的时间点之前将会完成的动作，应该用将来完成时，所以答案为D，意思是“到2020年末，中国将会变得更加强大、富有”。 8、It ____________years since I last saw you. A. was B. is C. will be D. has been 正确答案：D

解析：根据时间状语since I last saw you，可知前面的动作是从过去发生一直持续到现在，应该用完成时态，所以选D，意思是“自从我上次看见你已经过去很多年了”。 9、The room____________often cleaned by the worker. A. has B. will be C. was D. is 正确答案：D

答案讲解：主语the room 是单数，和谓语动词clean之间是被动关系，而副词often表明是经常发生的动作，应用一般现在时，所以选D，意思是“房间经常由工人打扫”。 10、 The railway____________in three years.

A. is complete B. will completed C. has completed D. will be completed 正确答案：D

解析：根据时间状语in three years可知这个动作将要发生，应该用一般将来时态，而主语railway和谓语complete之间是被动关系，所以答案为D，意思是“铁路将在三年内完成”。 11、The Anti-Japanese War____________in 1937 and it____________eight years.

A. break out …last B. was broken out …lasted C. broke out …last D. broke out…lasted 正确答案：D

答案讲解：根据时间状语in 1937可知这是过去发生的事情，应用一般过去时。主语the Anti-Japanese Warr和谓语broke out是主动关系，不能用被动语态，所以答案为D，意思是“抗日战争爆发于1937年，持续了8年之久”。

12、____________you____________there before?

A. Have, been B. Have, gone C. Have, been to D. Have gone to 正确答案：A 答案讲解：本题意为“你以前去过哪儿吗？”，表明说话时双方都不在那个地方，应该用have been to 结构，所以答案为A。

13、Tom ____________ his lessons from seven to eight last night.

A. was doing B. had done C. were taken D. had been taken 正确答案：A

答案讲解：时间状语from seven to eight last night表示的是一段时间，所以应该用过去进行时，意思是“汤姆昨晚从7点到8点这段时间正在学习功课”，所以答案为A。 14 He____________thin. What happened to him?

A. was getting B. is getting C. will getting D. had been got 正确答案：B

答案讲解：本句表示的是汤姆现在处于的一种状态，应该用现在进行时态，所以答案为B，意思是“他变得瘦了，发生了什么事情？”。

15、I ____________my homework now.

A. finish B. finished C. have finished D. had finished 正确答案：C 答案讲解：此句用现在完成时表示某一动作对现在造成的影响或结果，意思是“我现在已经完成了作业”，

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所以应该选C。

Unit 4 动词的语态

1、That factory ____________ nearly 50 years ago.

A. has been built B. had built C. was built D. has built 正确答案：C

答案讲解：根据时间状语nearly 50 years ago，可知谓语动词应该用一般过去时；而主语the factory和谓语build之间是被动关系，所以答案为C。句子的意思是：“这个工厂修建于50年前。” 2、We all believe that computer____________ smaller and smaller in the coming years. A. can be become B. will be got C. will be changed D. can turn 正确答案：D

答案讲解：此题意思是：“我们都相信在未来几年中计算机会变得越来越小。”能表达此意的只有A、B和D选项。动词become、get和turn + adj.可以构成主系表结构，且不用被动语态，所以答案应选D。 3、He ____________ not to leave waste paper in public places any more. A. warns B. warnd C. is warned D. was warned 正确答案：D

答案讲解：分析句子结构，主语he和谓语warn之间是被动关系，而这件事很明显是发生在过去，所以答案为D。句子的意思是：“他被警告不要再把废纸扔在公共场所。” 4、Don't worry. Everything will____________in time.

A. be finished B. finish C. Finished D. be finishing 正确答案：A

答案讲解：主语everything和谓语动词finish之间是被动关系。在将来时态中，被动语态形式为“主语+will be + V.p.p.”，所以答案为A。句子的意思是：“不要担心，每件事都会按时完成。” 5、Such problems ____________ as soon as possible.

A. have solved B. have been solving C. have to solve D. have to be solved 正确答案：D

答案讲解：分析句子结构，主语such problems和谓语solve之间是被动关系，所以答案应选D。“主语+ have to + be +V.p.p.”的意思是“不得不被……”。句子的意思是：“这样的问题不得不尽快解决。” 6、Her application for the position ____________ by the boss.

A. was refusedB. was refusingC. refusedD. is refusing 正确答案：A

答案讲解：分析句子结构，主语her application for the position和谓语refuse之间是被动关系，所以答案应选A。句子的意思是：“她申请那个职位被老板拒绝了。” 7 The event ____________ at the time last year.

A. happens B. happened C. is happened D. was happened 正确答案：B

答案讲解：动词happen是不及物动词，没有被动语态；时间状语at the time last year表明这件事发生在过去，应该用一般过去时，所以答案为B。句子的意思是：“这件事发生在去年的这个时候。” 8 Much ____________ in the past few years.

A. has done B. Did C. has been done D. was done 正确答案：C

答案讲解：主语much和动词do之间是被动关系，时间状语in the past few years是现在完成时的一个标志，所以正确答案是C。句子的意思是：“在过去的几年中完成了很多事情。” 9、 Because of the rainy day, the match ____________

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A. has been putting off B. has put off C. put off D. has been put off 正确答案：D

答案讲解：主语the match和谓语put off之间是被动关系，应用被动语态，所以答案为D。句子的意思是：“由于下雨，比赛被推迟了。”

10、Working hours in the United States ____________over the past 20 years. A. have increased B. increased C. were increasing D. have been increased 正确答案：A

答案讲解：increase在句中表示一种状态而不是动作，所以不能用被动语态；根据时间状语over the past 20 years，可知本句应用现在完成时，表示过去发生的事情对现在的影响，所以答案为A。句子的意思是：“在美国过去的20年中，工作时间增加了。”

11、Since computers were invented, it ____________ that they are indispensable for scientific research.

A. thought B. has been thought C. is thinking D. had thought 正确答案：B

答案讲解：it在句中作形式主语，句子真正的主语是that引导的从句，而且it和think是被动关系，应用被动语态，所以应选B。句子的意思是：“自从计算机发明以来，人们就认为它们对科学研究而言是必不可少的。”

12、He was told that after he graduated he ____________ by a company. A. would be employed B. would get employed C. would be employing

D. would employ 正确答案：A

答案讲解：主语he和谓语employ之间是被动关系，应用被动语态，而get employed是比较口语化的一种被动语态，这种结构中很少用by短语，所以答案为A。句子的意思是：“他被告知毕业后会被一家公司聘用。”

13、The steps of progress in society ____________ of as having happened in a short time. A. must not think B. must not be thought C. must think D. thought 正确答案：B

答案讲解：主语the steps of progress in society和谓语think of之间是被动关系，应用被动语态，所以应选B。句子的意思是“不应该认为社会进步的步伐会在短时间内发生。”

14、His wife told him that the kitchen ____________ cleaned by the sweeper. A. was being B. was getting C. has been D. got 正确答案：A

答案讲解：主语the kitchen和谓语clean之间是被动关系，应该用被动语态。get +V.p.p.是比较口语化的一种被动语态，这种结构中很少用by短语，故可以排除B和D。主句是一般过去时，从句也应用过去时态，故又可以排除C。所以，正确答案为A，这是过去进行时的被动语态结构。句子的意思是：“他的妻子告诉他清洁工正在打扫厨房。”

15、Owing to the snowstorm, the trip to the mountain ____________.

A. has been canceling B. has canceled C. Canceled D. has been canceled 正确答案：D

答案讲解：the trip to the mountain和cancel 之间是动宾关系，所以这里应该用被动语态，用be+V.p.p.的形式，这里符合要求的只有D，因此正确答案应该是D。

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