Question

17．I will tell you the good news as soon as you _______ back．（　　）

• A． come
• B． came
• C． are coming
• D． will come

Answer 1

分析 你一回來我就會告訴你這個好消息．

解答 答案：A．
as soon as表示一…就…，引導的時間狀語從句，遵循主將從現(xiàn)的規(guī)則，從句主語you，故答案是A．

點評 as soon as 的用法一般是兩種情況：
1、指未發(fā)生的動作，規(guī)律是：主句一般將來時，從句用一般現(xiàn)在時代替一般將來時
如：I will tell him the news as soon as he comes back．
注：有時，為了特意表達剛剛完成某事就如何如何，需要用現(xiàn)在完成時．
如：I will go with you as soon as I have washed my face．
2、指緊接著發(fā)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