6、连接词一般只用that,who,即使在强调时间状语和地点状语时也如此,that,who不可省略。第二、It's ....that/who....的强调句型只是为了强调某一成分,而不充当成分。所以它和It作形式主语,真正的主语从句后置的情况有所不同。我们一起看下面两个例句:1.It's necessary that we should learn english.(主语从句)2.It's not until he got off the bus that he realized hismoneywasst
7、olen.(强调句型)解析:因为强调句型中的It's....that/who....在句子中不充当任何成分。所以去掉后句子依然完整。例子2去掉It's....that/who....后就成了until he got off the bus he realizedhismoneywasstolen. 而例子1去掉后句子则不完整。(4)not…until…句型的强调句1、句型为:Itis/wasnotuntil+被强调部分+that+其它部分e.g.普通句:Hedidn’tgotobeduntil/till