I think ____(do) exercise is good for health

I think ____(do) exercise is good for health
do 是加ing还是原型,若加ing 这件事情得是主语,而现在I是主语,那么do是什么形式,

huhu4329 1年前已收到5个回答举报

zhf78 春芽

共回答了14个问题采纳率：100% 举报

doing
因为think 后面省掉了(that),所以是从句,后面是个完整的句子,所以+ing

1年前

285583533 幼苗

共回答了17个问题举报

doing 因为i think 后面接的是宾语从句，宾语从句中的主语，此处应用doing exercise动名词短语或者to do excercise动词不定式。

1年前

zhangxing801 幼苗

共回答了100个问题举报

doing
这里是动名词做后面从句的主语

1年前

jaffei 幼苗

共回答了19个问题举报

doing
think后面跟的是一个句子,而doing exercise是句子的主语成分.
doing这个句子为宾语从句.

1年前

waroberttung 幼苗

共回答了2个问题举报

doing

1年前

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