1.He hasn't tell me if he ___ .I'll telephone you as soon as

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1.He hasn't tell me if he ___ .I'll telephone you as soon as he ___.
A.will come,comes B.will come,will come C.comes,will come D.comes,come
2.Please ask Jim when he ____ for London when he ____ tomorrow.
A.is leaving,comes B.will leave,will come C.leaves,is coming D.leaves,comes
这其中第一题是选A,第二题也是选A.但我不知道为什么,麻烦帮我分析下为什么这两个选项就可以,其它选项就不行

1.第一个空考的是宾语从句,这里的if是“是否”的意思,根据句意,he还没来,故要用一般将来时；第二个空考点是as soon as引导的时间状语从句,主句用了一般将来时,从句要一般现在时,即遵循“主将从现”原则.
2.本题与第一题的考点类似.只是第一个空的谓语动词leave用is leaving 来表达一般将来时而少用will leave,这是英语的习惯用法.类似的动词还有come.第二个空也是遵循“主将从现”原则,不再累述.
总结：辨清各种从句的性质及其所要求的时态是解答此类问题的关键.

He doesn't tell me when he _______.I'll call you up as soon As soon as he comes back,I’ll tell him when ___ and see him. As soon as he _____(come),I'll phone you. 1.i (tell) him the news as soon as he comes back.2.i ()mum t He'll give me a call as soon as he ( ) As soon as he comes back,I'll tell him when（）and see him.A. 一道高中英语选择As soon as he comes back,I'll tell him when____and s [As soon as he comes back,I'll tell him when__and see him.] As soon as he comes back,I'll tell him when____and see him. As soon as he comes back,I'll tell him when 请适当解析~As soon as he comes back,I'll tell him when__and see h As soon as he comes back,I'll tell him when ____and see him.