in what的用法
第一句：Sunni militias turned against al-Qaeda and its militant allies two years ago in what was a key turning point in the campaign to quell the Iraqi insurgency.
第二句：He was killed on Thursday in what are still mysterious circumstances.
请问：这两个句子中“in what" 是什么用法?尤其是IN 在里面起什么作用?
请真正明白的回答.
人气：306 ℃ 时间：2020-04-01 09:17:21
解答
in在这儿没特别之处,就普通介词,特别的是what,不是疑问词而是连接代词,它引导一宾语从句,意思相当于the things that.
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