文档介绍：Ⅸ名词性从句: 名词性从句包括主语从句, 宾语从句, 表语从句, 同位语从句.
主语从句有三类:
由what等代词引导的主语从句: what表示“…所…的(东西)”, 在结构上等于一个名词加一个定语从句; whatever表示“所…的一切”; whoever表示“一切…的人”.
What you need is more practice
What is hard is to do good all one’s life and never do anything bad.
Whatever was said here must be kept secret.
Whatever I have is at your service.
es will be e.
Whoever fails to see this will make a big blunder.
由连词that引起的主语从句: 这类主语从句在大多数情况下都放到句子后部去, 而用代词it做形式上的主语:
That we need more equipment is quite obvious.
It is impossible that I may not able e.
It doesn’t seem likely that she will be here.
在口语中连词that有时可以省略掉:
It’s good you’re so considerate.
It’s a pity you missed such a fine talk.
由连接代词或连接副词(或whether)引起的主语从句: 这类主语从句, 也可以放到句子后部去, 前面用it做形式上的主语.
When we shall have our sports meet is still a question.
It is still a question when we shall have our sports meet.
Whether he will join us won’t make too much difference.
It won’t make too much difference whether he will join us.
2宾语从句: 和主语从句及表语从句一样, 宾语从句也有以上三类.
a) 连接代词或副词引导的从句只是在某些动词后能用作宾语.
Tell me what you want.
I just can’t imagine how he could have done such a thing.
Have you decided whom you are to nominate as your candidate.
能跟这类宾语从句的常见动词有: see, say, tell, ask, answer, know, decide, find out, imagine, suggest, doubt, wonder, show, discover, discuss, understand, inform, advise等. 这种动词后也常用whether或if引导的从与作宾语:
I don’t know wheth