Question

5．I will tell you the news as soon as I         back．（　　）

• A． came
• B． will come
• C． have come
• D． come

Answer 1

分析 我一回来我就打电话告诉你这个消息．

解答 答案：D．
as soon as表示一…就，引导的时间状语从句，遵循主将从现的规则，从句主语I，故come，故答案是D．

点评 as soon as 的用法一般是两种情况：
1、指未发生的动作，规律是：主句一般将来时，从句用一般现在时代替一般将来时
如：I will tell him the news as soon as he comes back．
注：有时，为了特意表达刚刚完成某事就如何如何，需要用现在完成时．
如：I will go with you as soon as I have washed my face．
2、指紧接着发生的两个短动作，主从句都用一般过去时
如 He took out his English books as soon as he sat down