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i was often a little tired after a day's work and watch TVdemands vevy little effort.为何WATCH加ING
人气:406 ℃ 时间:2020-01-28 18:43:06
解答
and后面是另外一个句子,watching TV在这个句子里作主语.watch只有用ing形式才能在句子里做主语.
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