所谓连接代词和副词,实际上就是我们以前学过的疑问代词和副词,如who, whose, whom, wha
连接副词可分为两类,一类是用于连接句子或从句,常见的有therefore, besides, otherwise, however, moreo
连接代词:what, whatever, who, whoever, whom, whomever, whose, whi
引导名词性从句的连接词可分为三类: 连词:that, whether, if, as if, as though(不充当从句的任何成分,但绝不能省略)