as soon as的用法

【as soon as的用法】

as soon as的用法


as soon as連接的時間狀語從句中,指未發生的動作,規律是:主句一般將來時,從句用一般現在時代替一般將來時如:I will tell him the news as soon as he comes back 。指緊接著發生的兩個短動作,主從句都用一般過去時如 He took out his English books as soon as he sat down就這兩種情況,熟記就行 。在賓語從句中,當主句為與過去時的時候,從句必須用與主句相對應的時態,所以為了與主句動詞said呼應,時間狀語從句中的will look up應該對應為過去將來時態would look up,finds對應為found

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