题目内容
( ) 1. ―I wonder if he us in the discussion tonight.
―I believe if he his homework,he will join us.
A,will join, will finish B. will join,finishes
C. joins, finishes D. joins,will finish
1. B在宾语从句里,if意为"是否",适用于各种时态。此处应用一般将来时。在条件状语从句里,if意为"如果",在主句是一般将来时的情况下,从句不能用一般将来时,只能用一般现在时代替一般将来时。
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