you must not leave the bike here怎么解释啊 改成被动语态

you must not leave the bike here怎么解释啊 改成被动语态 You must not take the books out of the library.帮我改成被动语态.. We are not allowed to smoke here、被动语态,可以改成主动语态么?怎么改. 将下列句子改为被动语态 1.You should put your bike here.2.You must clean You must not plant trees in very dry earth改成被动语态 you should put your bike here 改为被动语态? Don't put the bike here.如何改为被动语态? 被动语态练习题用动词的正确语态填空 the bike_____(must not put) here. a beauti Li Lei mended the bike.改成被动语态 We must tie the horse to the tree改成被动语态怎么该 I must clean the room.改成被动语态 将下列句子改为被动语态,空一词We must ask the man not to smoke here The man