Do you know if he ____to play basketball with me ? ---I think he will come if he ___free tomorrow.

题目

Do you know if he ____to play basketball with me ? ---I think he will come if he ___free tomorrow.
A comes,is B comes;will be C will come, is D will come, will be

答案

正确：C
if表示“是否”时,从句时态必须据实际进行选择,第一个句中的if是是否的含义,从句体现将来时,故填will come; if 表示“如果”时,常套用“主将从现”,即主句使用一般将来时,从句使用一般现在时,故从句填is.