被动语态补"to"They found the result very satisfying.转成被动时为The result is found very satisfying.而I saw her pass by the window.转换成被动时为She was seen to pass by the window.为什么前者变被动时不补"to",而后者要

They have found ways to make waste water clean.的被动语态则怎么变? 改被动语态 They have found ways to make waste water clean. They have found a way to make waste water clean.如何让改为被动语态 They have found the way to Magic Parade.怎么改为被动语态? 被动语态补toThey found the result very satisfying.转成被动时为The result is found very satisfying.而I saw her pass by the window.转换成被动时为She was seen to pass by the window.为什么前者变被动时不补to,而后者要 改写被动语态帮忙把But they found nothing.改为被动语态. They used to do it this way变被动语态 把 Do they invite Mary to dinner改成被动语态 They used to practise speaking English together.改为被动语态 they found the lost boy 20 rninutes ago变被动语态 we found him play basketball over there just now改为被动语态They saw the boys playing football when they passed there改为被动语态 英语主动语态转被动语态They should do it at onceHe is likely to let you downThey named the child tomWe found some jeweie in a boxThe teacher is keeping the pupils at school for a revision 主动语态变被动语态:They must build another house to live in Do they invite you to give a talk in english?主动语态变为被动语态 They are sending it to his home by train.主动语态改为被动语态 Have you found ways to make waste water clean?改为被动语态 关于found的被动语态为何没有be found to do,类似的词还有哪些,不吝赐教. they should always to everything well.改成含被动语态的句子They hold that ___________