a 像这种带有个人猜测（i think i guess等）直接跳过 think guess 等,看从句.
从句中 have +前面的 not（否定转移到后面从句中）=have not
所以反义疑问要用 （have not） 的反义 have 即 have you（用从句中的主语）
I don't think you've heard of him before,____?A.have you B.do I C.haven't you D.don't I
I don't think you've heard of him before,____?A.have you B.do I C.haven't you D.don't I
英语人气：830 ℃时间：2019-10-19 20:54:26
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