这是定语从句时,充当关系代词。引导词是it,先行词在从句中充当副词成分。
例句:the way the guests were treated 是定语从句,完整句型是:the way that/which the guests were treated客人被招待的方式,先行词是the way,the guests were treated作定语用来修饰the way,从句the guests were treated 要用被动语态,表示被招待、被对待的方式。
语法分析
1、从句的主语是that时,that不宜省略。如: He says that that is a real king's hat.他说那是一个真的王冠。
2、若出现两个或两个以上的that宾语从句,且由并列连词连接时,只有第一个连词that可以省去,其余须保留。如: She said(that)she would come and that she would also bring her son.她说她要来,还要带她的儿子来。
3、若that从句中含有主从复合句时,则that不宜省略。如: I'm afraid that if you've lost it,you must pay for it.恐怕你丢失了它,就得赔偿。