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I don’t know if mum            a gift for me.If she             one, I will be very happy.
A.buys; buysB.buys; will buy
C.will buy; buysD.will buy; will buy
C

试题分析:此题考查if引导的条件状语从句和宾语从句的相关知识。根据语境可知此句的含义是我不知道妈妈是否给我买礼物,如果给我买一个我会很开心的。前半句是if引导的宾语从句,后半句是条件状语从句。根据语法知识可知第一个空格要用将来时,第二个空格要用一般现在时,故选C。
点评:if既可以引导宾语从句又可以引导状语从句。if充当宾语从句的连接词时,相当于whether,词义为“是否”,遵循宾语从句的时态规则,可根据语境选择任何时态;充当从属连词,引导条件状语从句时,词义为“如果”,若主句中的谓语动词用一般将来时,则从句中的谓语动词通常用一般现在时表示将来。
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