表示與現(xiàn)在事實相反或對相在情況有所懷疑, as if / though從句謂語用過去式 a. He speaks English so well as if she had studied English in England. b. She looked as if she were ill. 查看更多

 

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as if和as though引導的從句所敘述的情況與事實相反時,從句的謂語動詞多用虛擬語氣。在虛擬語氣結構中,用________時態(tài)來表示現(xiàn)在的情形;用________時來表示過去的動作或狀態(tài);用________時表示正在進行的動作;用________時表示將要發(fā)生的動作。

當as if和as though從句的主語和主句主語一致,且從句中含有系動詞be的某種形式時該主語和系動詞可以省略。

例如:John paused as if(he was)expecting Mary to speak.

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