改为被动语态：He has to deliver the letter by hand.

改为被动语态：He has to deliver the letter by hand. He has posted the letters already.改为被动语态 改为被动语态：1.He writes a letter to you.2He has already made it for you. He told me to finish the work 改为被动语态 Is he going to sing a song(改为被动语态) 改变句式he has to finish the work on time(改为否定句)he parents allow him to go out at night(改为被动语态) He has finished his homework.被动语态 He has to take away his table.请改为被动语态,勤态动词是直接加be,have to是如何改呢? He can speak English.改为被动语态 he has visited a great many of places改为被动语态 He has planted a lot of trees.(改为被动语态） He has charged the battery.这句英语 （改为被动语态） He has been to Dalian 的被动语态是什么?什么情况下没有被动语态,是不是只有及物动词才有被动语态. We are listening to the music now,They has cleaned the room,he planted the tree last year ,这三句话 改为被动语态.,尽快. he asked he asked the farmers to work for a long time改为被动语态 people know that he is able to do it well 改为被动将这句话改为被动语态 our headmaster has allowed us to play basketball after taking the exam 改为被动语态 He asked me to go to his birthday party .改为被动语态