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do(实意)+do(助动词)=be doing?
1.What do you promise等於What are you prominsing?
2.What do you promise等於What were you prominsing?
人气：424 ℃　时间：2020-05-26 17:21:52
解答
理解错误
这两句之间是时态的不同
do(实意)+do(助动词)=be doing这个等式不存在
从没听过
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