I'm not sure if she____tomorrow.If she ___tomorrow.I will call you at once.A.comes,will come B.will come,comesC.will come,will come有两个if不知怎么选,请说明理由,

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I''mnotsureifshe____tomorrow.Ifshe___tomorrow.Iwillcallyouatonce.A.comes,willcomeB.willcome,comesC.wi

I'm not sure if she____tomorrow.If she ___tomorrow.I will call you at once.A.comes,will come B.will come,comesC.will come,will come有两个if不知怎么选,请说明理由,
I'm not sure if she____tomorrow.If she ___tomorrow.
I will call you at once.
A.comes,will come B.will come,comes
C.will come,will come
有两个if不知怎么选,请说明理由,

I'm not sure if she____tomorrow.If she ___tomorrow.I will call you at once.A.comes,will come B.will come,comesC.will come,will come有两个if不知怎么选,请说明理由,
选B.
译文：我不确定她明天是否来.如果她明天来.
前句的if是“是否”,是什么时态就用什么时态.
后句的if是“如果”,引导条件从句,要用一般现在时.

B
第一个IF引导的是宾语从句里面用将来时态
第二个IF引导的是条件状语从句，用一般现在时表示将来时态。此外在时间状语从句里面也是用现在表示将来。

答案是：B
第一个if 是“是否”的意思
第二个if 是“如果”的意思
我不知道她明天是否会来---用将来时：will come
如果她明天来了，我会马上打电话给你---If 条件句中，主句用一般现
在时，从句用将来时----所以选comes

B

B. 我不知道她明天会不会来,如果她来的话我会打电话通知你

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