the old man was often seen ___ by the lake the old man was often seen ___ by the lakewalk,但是不理解句型,see不是该接do吗?

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the old man was often seen ___ by the lake the old man was often seen ___ by the lakewalk,但是不理解句型,see不是该接do吗?
the old man was often seen ___ by the lake
the old man was often seen ___ by the lake
walk,但是不理解句型,see不是该接do吗?

the old man was often seen ___ by the lake the old man was often seen ___ by the lakewalk,但是不理解句型,see不是该接do吗?
see sb do其实是do 前面省略了to,在变成被动态时to要还原.如同make sb do -- sb be made to do

see只能接to do或者doing,不能接动词原形的,这句话是被动语态

be done to do sth

这里是被动语态,是这个老头常被别人看见去湖边走,see do是主动语态,比如说这个老头常看见别人去湖边走就是see do,

注意,这里see的主语不是old man,而是其他人,是someone else,老人是被其他人看到经常在湖边散步,因此你要理解这里面的含义,并非老人看见了什么,而是老人被看见,是被动式,被动是什么?be seen to do something,对不对?因此要用to walk,如果这里的主语是老人,当然就用do,但这里不是,所以不能一概而论...

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注意,这里see的主语不是old man,而是其他人,是someone else,老人是被其他人看到经常在湖边散步,因此你要理解这里面的含义,并非老人看见了什么,而是老人被看见,是被动式,被动是什么?be seen to do something,对不对?因此要用to walk,如果这里的主语是老人,当然就用do,但这里不是,所以不能一概而论

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