if后面帶的從句分兩種,一種是非真實(shí)條件句,從句中作為條件的事情在實(shí)際情況是根本不可能發(fā)生的,這時(shí)候就用虛擬語氣,if所帶的從句的謂語用一般過去式.比如:If I were you.不過如果作為過去事實(shí)的非真實(shí)條件從句,謂語就要用過去完成式了.
還有一種是真實(shí)條件句,從句的條件是真實(shí)存在的,就不用虛擬語氣,謂語用一般現(xiàn)在時(shí).
He has just arrive but he talks as if he knew all about it.為什么用knew?
He has just arrive but he talks as if he knew all about it.為什么用knew?
為什么不用know?
是不是只有在主句的謂語動(dòng)詞是實(shí)意動(dòng)詞才用虛擬語氣?謝謝了兩位老師!
為什么不用know?
是不是只有在主句的謂語動(dòng)詞是實(shí)意動(dòng)詞才用虛擬語氣?謝謝了兩位老師!
英語人氣:366 ℃時(shí)間:2020-06-22 22:42:00
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