非谓语 to do/do/doing/done的用法?主动语态下 被动语态下 是怎样?have l非谓语 to do/do/doing/done的用法?主动语态下 被动语态下 是怎样?have let make的区别是什么?i can't let you runing up and down all day long.为什么用let 而不用have？i can't have the babysitter working all day long.为什么用have 而不用let？did you notic the little boy taking candy and run away？为什么不是running away？birds are seldom heard to sing at night.为什么是to sing不是sing？这里to sing是主动还是被动？i would love to have gone to the party last night but i had to wor

非谓语 to do/do/doing/done的用法?主动语态下 被动语态下 是怎样?have l
非谓语 to do/do/doing/done的用法?主动语态下 被动语态下 是怎样?have let make的区别是什么?
i can't let you runing up and down all day long.
为什么用let 而不用have？
i can't have the babysitter working all day long.
为什么用have 而不用let？
did you notic the little boy taking candy and run away？
为什么不是running away？
birds are seldom heard to sing at night.
为什么是to sing不是sing？这里to sing是主动还是被动？
i would love to have gone to the party last night but i had to work extra hours to finish a report.
为什么是to have gone
在比如说这个she reached and stoped to rest可以用she reached and stopped to have rest吗？