Unit 2 Witnessing timeSection Ⅱ Grammar and usage名词性从句概述名词性从句就是在句子中起名词作用的从句,可分为:主语从句、宾语从句、表语从句和同位语从句
主语从句定义:在复合句中作主语,相当于名词的名词性从句,一般置于谓语之前,也可用 it作形式主语,将主语从句放在主句之后
常用引导词:that,whether,who(ever),whose,which(ever),how,when,where,why,what(ever)等
That he wants to do the job is obvious
=It is obvious that he wants to do the job
很显然他想做这份工作
Why he gave up the plan halfway is not clear
=It's not clear why he gave up the plan halfway
他为什么中途放弃这个计划还不清楚
宾语从句定义:在复合句中作宾语的名词性从句
常用引导词:that,whether/if,who(ever),whose,which(ever),how,when,where,why,what(ever)等
We want to know how he managed to escape from prison
我们想知道他怎样设法从监狱里逃出来的
She is interested in what I am interested in,why
她对我感兴趣的事感兴趣,为什么
表语从句定义:在复合句中作表语的名词性从句,位于系动词之后
常用引导词:that,whether,who(ever),whose,which(ever),how,when,where,why,what(ever),as if