but perhaps I ____for her.(NMET94)
had to write it out
must have written it out C. should have written it out
D. ought to write it out 析:选C。分析语境可知,口头上告知Sally如何去那里是不够的,所以我本应书面告知,却有没书面告知之,显得应使用should /ought to have written表示遗憾之情。 (二)may/might have done可能已做 / must have done 一定已做/can’t have done不可能做 例1:--- Where is my pen?
--- I _____it.(NMET88)
A. might lose
B. wouldn’t have lost
C. should have lost
D. must have lost D (三) could have done指本来能做而实际未做,表达遗憾的感情色彩.
You could at least have sent five cards.
你本来可以至少寄去5张明信片的。
(说明没有寄那么多)
二、情态动词的其他用法 1.can, could, may, might
专题八 │ 正面解读 情态动词 意义
例句
备注
can/could 能力
①I can see some birds flying in the sky.
②Could the girl read before she went to school?
could表示泛指过去的某一能力。表示过去有能力并且成功地做了某事,通常用was/were able to do,相当于managed to do/succeeded in doing。如:Because he practised hard, he was able to pass the driving test.
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