I don't know if she_me when she___

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/07/14 07:27:08

I don't know if she_____me when she_______
A.tells,arrives B.tells,will arrive C.will tell,will arrive D.will tell,arrives
为什么选d 根据主将从先应选b呀

答案选【D】
不要被题目的if混淆了,这个【if】不是【如果】的意思,而是【是否】的意思,所以不是引导【条件状语从句】.
【know】是动词,后面接一个有【if】引导的宾语从句,而刚好这个宾语从句里边还有一个由【when】引导的时间状语从句
所以最后,是按照【when】时间状语从句来解答案.
【when】后面是从句,是一般现在时,所以是【arrives】
前面是将来时,所以是【will tell】

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再问：动词后面的if都是引导的宾语从句吗？
再答：是的，if是其中一个引导词，意思等于【whether】

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