Doing exercise is good for your health .和 Swimming is good exercise.
Doing exercise is good for your health .和 Swimming is good exercise.
这两句话为什么要在动词加ing?
这两句话为什么要在动词加ing?
英语人气：439 ℃时间：2019-09-18 05:29:48
优质解答
因为是动词做主语 放在句首 所以要用动名词的形式
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