连词和状语从句一、连词1.并列连词(1)表示联合关系的并列连词:and(和),both
(既……又……),neither
nor(既不……也不……)
Neither I nor he has seen the film
(2)表示转折关系的并列连词:but,while(而,然而),whereas(而),nevertheless
He is short,while his brother is tall
(3) 表 示 选 择 关 系 的 并 列 连 词 : or( 或 ) , or else( 否 则 ) , otherwise( 要 不 然 ) ,either
(或……或……)
You can either stay at home or go fishing
(4)表示因果关系的并列连词:so(所以),for(因为)
It is morning,for the birds are singing
注意:then(那么,因而),thus(因而),therefore(因此,所以)等副词常可放在句首表示因果关系
He was busy,therefore he could not come
2.从属连词(1)引导名词性从句的从属连词引导名词性从句的从属连词有连接词:that,whether 和 if,这些连接词在句中不充当任何句子成分;连接代词主要有:who,whom,whose,which,what 等,它们在句中可作主语、宾语、定语等;连接副词主要有:when,where,how,why 等,它们在句中可作状语
We know (that) the earth goes round the sun
What we need is more time
That’s what I want
(2)引导状语从句的从属连词在句中作状语的从句叫状语