表示與現(xiàn)在事實(shí)相反或?qū)ο嘣谇闆r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(dǎo)的從句所敘述的情況與事實(shí)相反時(shí),從句的謂語動(dòng)詞多用虛擬語氣。在虛擬語氣結(jié)構(gòu)中,用________時(shí)態(tài)來表示現(xiàn)在的情形;用________時(shí)來表示過去的動(dòng)作或狀態(tài);用________時(shí)表示正在進(jìn)行的動(dòng)作;用________時(shí)表示將要發(fā)生的動(dòng)作。

當(dāng)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(dòng)詞be的某種形式時(shí)該主語和系動(dòng)詞可以省略。

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

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