搜狗做题网They happened to _____ for Tianjin when we got there. A.leav
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They happened to _____ for Tianjin when we got there. A.leave B. have left C.leaving D. had left
答案是B,求解释为什么不填A,词组中不是应该用原型吗?
答案是B,求解释为什么不填A,词组中不是应该用原型吗?
to do sth.这是常见的不定式后跟动词原形,表即将发生、未发生的事情.
若表达已经发生的事情,用
to have done sth.结构
题中,当我们到达那里时,他们碰巧已经离开去天津.
我们到时,他们已经离开,离开的动作在我们到达时就完成,故用
to have left 结构,选B
希望能满意,欢迎进步!：）
若表达已经发生的事情,用
to have done sth.结构
题中,当我们到达那里时,他们碰巧已经离开去天津.
我们到时,他们已经离开,离开的动作在我们到达时就完成,故用
to have left 结构,选B
希望能满意,欢迎进步!：）
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i got a scoop i was right there when it happened 语言点