动词的时态和语态
1．—What's that terrible noise，David?
—Oh，I forgot to tell you.The new machines in the nearby plant________ .
A．were tested
B．will be tested
C．are being tested
D．have been tested
解析：考查动词的时态。根据问句中的What's that terrible noise 可知，这里应该用进行时态，噪音是机器正在被检测时发出的，所以用现在进行时的被动语态。
答案：C
2．The attackers were arrested and didn't know where they________ .
A．would take
B．are taken
Cwere being taken
D．will be taken
didn't know 可知，空格处也应该用过去的某种时态，所以B、D不正确；根据句意可知此处用被动语态，故选C。
答案：C
3．When I got on the bus, I________ I had left my wallet at home.
A．was realizing
B．realized
C．have realized
D．would realize
解析：考查动词时态。句意：当我上了公共汽车的时候，我意识到我把钱包忘在家里了。题干在陈述过去发生的事情，要用一般过去时。
答案：BPeople begin to know that most environmental problems exist because necessary measures for preventing them________ taken in the past.
A．are not
B．were not
Chadn't been
D．wouldn't be
in the past暗示出用过去时态；hadn't been 指在一个过去的动作或时间之前发生的事情；wouldn't be 表过去将来，故B项正确。
答案：B
5．The old man who ________ in the deserted house alone for ten years has been settled in a nursing home now.
A．lived
B．has lived
C．has been living
D．had lived
解析由has been settled in a nursing home now可知，现在那位老人已经不住在那座空寂无人的房子里了，也就是说那位老人在那座废弃的房子里住了十年的动作并没有持续到现在，与现在没有关系，不能用完成时，故排除B、C、D。这里只表示过去曾经发生过某事，应该用一般过去时，故选A。
答案A
6．—Monitor?
—I'm not monitor of our class.I________ with the teacher until the monitor is elected.
A．will just help
B．am just to help
Cam just helping
D．have just helped
答案：C
7．The sky is clouding over；we can see there ________ a rainstorm.
A．is going to be
B．is going to have
C．will be
D．will have
解析 句意：天空乌云密布，看来要有暴风雨来临。根据某种迹象表明将要发生某事，用be going to do sth，且有there be结构，故选A项。
答案 A
Mary，I should tell you it is the third time that you________ your homework.
A．forgot to do
B．forgot doing
C．have forgotten to do
D．had forgotten doing
解析：考查时态和非谓语动词。“It is(was)the＋序数词＋time＋that从句”，表示“是某人第几次做某事”，在此句型中，若前面为it is，则that 从句用现在完成时，若前面为it was，则that 从句用过去完成时；而forget to do sth.表示忘了应去做某事，forget doing sth.表示忘了已做过某事。根据语意可知此题应选C。
答案：C
9．—I hear you________ at Smith's.
—Yes，I________ there for about three months.
A．work；had been working
B．worked；was working
C．are working；have been working
D．worked；have worked
解析：本题考查时态。听说你正在Smith's 上班，因此应该使用现在进行时态；我在那里已经工作大约三个月了(可能还会持续下去)，因此需要使用现在完成进行时态。
答案：C
10．—Why didn't you come to the cinema with us last Saturday?
—Oh，sorry.But I________ the film.
A．see
B．saw
Chave seen
D．had seen
(last Saturday)之前就已经看过了，也就是说动作发生在“过去的过去”，因此应该用过去完成时。
答案：D
11．Years ago we didn't know this, but recent science ________ that women who drink more than two cups of coffee every day are more likely to have heart disease than those who don't.
A．showed
B．has shown
C．will show
D．is showing
解析根据语境可知，用现在完成时表示已经得出了该结论。句意：许多年前我们不知道这点，但是最近的科学研究已经表明每天喝两杯以上咖啡的妇女比那些不喝咖啡的妇女更有可能患心脏病。
答案B
12．—How did you like his speech?
—Oh, it was very good.What he said ________ like poetry.
A．sounded
B．sound
C．was sounded
D．is sounded
解析句意：——你觉得他的讲话怎么样？——哦，很棒，他讲的话听起来像诗歌。题干中did, was, said都用了过去时，决定了sound要用过去时，又因sound在此为表示状态特征的连系动词，用主动形式表被动含义，故选A。
答案A
13．I hope her health ________ greatly by the time we come back next year.
A．improves
B．improved
C．will be improved
D．will have improved
解析：考查动词时态。by the time we come back next year是一个表示将来的时间状语，主句谓语动词表示在将来某一时刻以前必定完成的行为，应该用将来完成时，故选D。
答案：D
1With the sharp drop of the share prices all around the world, some economists predicted that the second economic crisis ________ soon.
A．came
B．has come
Cwould come
D．had come
soon可知此处用将来时态，本句的主句谓语动词为一般过去时态，故此处应用过去将来时态。
答案：C
15．The famous writer ________ in a coal mine for 15 years.
When he was 36, a person was to change his life.
A．has worked
B．had worked
Cworked
D．works
答案：C