need有被动语态么 比如it is needed 还是It need to be used?

need有被动语态么 比如it is needed 还是It need to be used? let 有被动语态么?一直记得学校里的时候 老师讲过let这个词没有被动语态,不可以sb be let ,转化被动语态的时候要用别的词代替,比如 let him cook it.被动态应是：he is made to cook it.请问这样是对的 It is a dog.有被动语态吗.如题. need的被动语态 它摸起来很软是It feels soft 还是It is felt softfeel有没有被动语态 关于被动语态中的系动词比如 it sounds great 不是应该用被动语态吗 train有被动语态么? eat 有被动语态么 increase有被动语态么 need 的被动语态是什么 need 的被动语态是什么 sell可以用于被动语态么sell well 无被动语态sell out 有被动语态还有什么特殊的么?it sold as well as expected 这句话对么?还是 be sold?sell 被动语态的用法 it is 这是什么句?被动语态吗 It is being repaired.这就话是被动语态 be +ing it is located in qater 为什么要用被动语态 It is belong to可以吗是被动语态吗 请问感官动词有没有被动语态,比如was sounded 把you need not do it now .变成被动语态．