情态动词考点聚焦
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作者：李雪
一、考查情态动词表推测的用法
1. 肯定的推测一般用must, should, may(might)或could(一般不用can)。其中,must的语气最强,译为"肯定"、"准是"、"想必是";should的语气次之,译为"很可能"、"应该",指按常理推测;may(might), could的语气最弱,译为"也许"、"可能"。
[原题再现]
-Excuse me. Is this the right way to the Summer Palace?
-Sorry, I am not sure. But it________be.
A. might B. will
C. must D. can
答案:A
2. 否定推测分为两种情况:
1)语气不很肯定时,常用may not, might not或could not,译为"可能不"、"也许不"。
[原题再现]
You might just as well tell the manufacturer that male customers________not like the design of the furniture.
A. must B. shall
C. may D. need
答案:C
2)否定语气较强时,则用can't,译为"根本不可能"、"想必不会",表示惊异、怀疑的感情色彩。
[原题再现]
-Isn't that Ann's husband over there?
-No, it________be him-I'm sure he doesn't wear glasses.
A. can't B. must not
C. won't D. may not
答案:A
3.疑问句中的推测,往往只用can或could。
[原题再现]
Mr. Bush is on time for everything. How________it be that he was late for the opening ceremony?
A. can B. should
C. may D. must
答案:A
二、考查"情态动词+完成式"的用法
1. "should (ought to) +完成式"表示本应该做某事而实际上没有做。其否定式表示某种行为不该发生但却发生了。
[原题再现]
Oh, I'm not feeling well in the stomach, I________so much fried chicken just now.
A. shouldn't eat
B. mustn't have eaten
C. shouldn't have eaten
D. mustn't eat
答案:C
2. "could+完成式"表示本来能够做成某事,但结果没能做成,含有遗憾的意味。
[原题再现]
-I stayed at a hotel while in New York.
-Oh, did you? You________with Barbara.
A. could have stayed
B. could stay
C. would stay D. must have stayed
答案:A
"could + 完成时"用于否定和疑问句中时,表过去不可能或对可能性提出疑问。
[原题再现]
My sister met him at the Grand Theatre yesterday afternoon, so he________your lecture.
A. couldn't have attended
B. needn't have attended
C. mustn't have attended
D. shouldn't have attended
答案:A


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