The truth is (that I have been there)为什么是表语从句

It is the second time that I have been to Beijing是主语从句吗? it is the first time that i have been here 是定语从句么?that做谁的宾语? the reason is that i love you 是表语从句吗 1.当先行词在定语从句中作表语时，只能用that。如： This is a book that I have been it is the first time that i have been to japan 是什么从句 英语关于同位语从句Do you know the truth that where there is life ther There is no doubt that I have been loving you from the The trouble is that i have lost his address.句子中哪个是表语? the book is helpful that...that是表语从句?The good news is that w It's the third time__ I have been there 为什么要用that 怎么判断表语从句This is what I want中没有表语也没有连系动词,为什么是表语从句 The truth is that 中的that引导什么从句