it is+过去分词 +that中的that能省吗? it 过去分词

It's +过去分词表示什么意思 两种情况1、It's 是 It has 的缩写，比如It's gone.它已经走了.It's reported that.XXX已经被报道过了.2、It's 做形式主语，表示客观事实.比如It's hope...