it is 加过去分词加从句的用法.仔细讲讲.多多益善 It is+过去分词+从句，常用的组合如下：it is hoped that 希望it is asked that 要求it is heard that 听说It is said that 据说It is reported that 据报道It is announced that 通知说It is excepted that 寄望.
is，are，am的动词进行时，过去式，过去分词各是什么？ is/are/am 没有独立的进行时形式，都用being过去式：is-was/are-were/am-was过去分词：is/are/am 过去分词都是been
what is your hobby？it is ( )括号里填的是动词原形，还是现在分词？我怀疑老师改错了，老师写的是现在分词.
