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问题: 为什么??

She bought the dress_____she had first asked for

为什么不是what而是 that ??

解答:

这是一个定语从句,定语从句中不能用WHAT做引导词!!
She bought the dress(_____she had first asked for).
括号里的是定从,由于FOR缺少宾语,选THAT做它的宾语.
我想你应该明白了吧~~~~~~有不懂的找我,加油~~~~~