题目内容

2．-Do you know if she _______  to visit us？
-I think she will come if she ________ free tomorrow．（　　）
A．comes； isB．will come； is
C．comes； will beD．will come； will be

分析 --你知道她是否会来看望我们吗？
--我认为如果她明天有空，她会来的．

解答 答案：B
此题考查if引导的从句：if意为"是否"引导宾语从句，if意为"如果"，引导条件转语从句；
根据题干句意知第一个if为"是否"之意，故符合宾语从句时态规则，主句Do you know为一般现在时，从句可根据自身情况选择，根据答语知她来看望是发生在将来的事，故应用一般将来时，will come；
第二个if意为"如果"故采用条件状语从句：主将从现，if所在为从句，使用一般现在时，且主语为第三人称单数she，故填is．故选B．

点评 此题重在考查if引导的宾语从句和条件状语从句．考生需根据句意明确判断词意，再根据不同的从句采用不同的时态．

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