1、使役动词 make （let, have ）sb do sth
2、感官动词 see （hear ,watch ,listen to , notice ）sb do sth
例如：
1) .We often see him play football .
He is often seen to play football by us .
2). The boss made his workers work 12 hours a day .
The workers were made to work 12 hours a day by the boss .
3) I heard her sing in the room yesterday .
She was heard to sing in the room by me yesterday .本回答被网友采纳
1、使役动词 make （let, have ）sb do sth
2、感官动词 see （hear ,watch ,listen to , notice ）sb do sth
例如：
1) .We often see him play football .
He is often seen to play football by us .
2). The boss made his workers work 12 hours a day .
The workers were made to work 12 hours a day by the boss .
3) I heard her sing in the room yesterday .
She was heard to sing in the room by me yesterday .
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