-- Was Mary at the party last saturday?-- No.I don"t think so.I___her.-- Was Mary at the party last saturday?-- No.I don"t think so.I___her.A.don"t see B.didn"t see C.haven"t seen D.hadn"t seen为什么不选C

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-- Was Mary at the party last saturday?-- No.I don

-- Was Mary at the party last saturday?-- No.I don"t think so.I___her.-- Was Mary at the party last saturday?-- No.I don"t think so.I___her.A.don"t see B.didn"t see C.haven"t seen D.hadn"t seen为什么不选C
-- Was Mary at the party last saturday?-- No.I don"t think so.I___her.
-- Was Mary at the party last saturday?
-- No.I don"t think so.I___her.
A.don"t see B.didn"t see C.haven"t seen D.hadn"t seen
为什么不选C

-- Was Mary at the party last saturday?-- No.I don"t think so.I___her.-- Was Mary at the party last saturday?-- No.I don"t think so.I___her.A.don"t see B.didn"t see C.haven"t seen D.hadn"t seen为什么不选C
haven't seen是过去完成时的否定式
首先这段对话的意思是:Mary上个星期六去派对了么?
不,我不这么认为,我没有看到她.
这里应该用过去式,上个星期六的派对是过去式,而过去完成时则是过去的过去发生的事情,这个人说“没有看到她”是现在说的,所以是现在的过去没有看到她,所以只需要用过去式.

B. didn"t see
前后文有时间状语last saturday

see是短暂性动词,没有完成时,只能用一般过去式

过去式HAVE--HAD

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