题目内容

4.I ________ my cellphone last night.Now the battery is running out.(  )
A.could have chargedB.might charge
C.should have chargedD.would charge

分析 句意:昨天晚上我本应该给手机充电的,现在电池快没电了.

解答 答案C.由last night可知是与过去的假设,用情态动词+have done 表示对过去的推测."could have done"表示过去可能做了某事或者过去本来能够做某事而没做;"should have done"表示过去本应该做某事而没做.根据句意,昨晚我本应该给手机充电的(而事实上没有),现在电池快没电了.故选C.

点评 本题考查情态动词+have done 的用法,要结合具体的语境选择出正确的选项.

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