I am not sure if Tom ____ home.If he ___,I will call you.A will come,will come B comes,will comeC will come,comes

问题描述:

I am not sure if Tom ____ home.If he ___,I will call you.
A will come,will come B comes,will comeC will come,comes

C will come, comes

选C,

C
I am not sure if Tom will come home 我不确定Tom是否会回家。(宾语从句,这里的if是是否的意思。因为,Tom还没回家,因此用将来时)
If he comes, I will call you. 如果他回来,我会给你打电话的。(这里的if引导条件状语从句,做如果讲,在这样的句子中,主句用一般现在时,从句用一般将来时)

C
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选C
前面是if引导的宾语从句,后为If引导的条件句,故用一般现在时表将来.
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