大學英語六級名詞性從句語法精要

  名詞性從句
  主語從句有三類:
  由what等代詞引導的主語從句: what表示“…所…的***東西***”, 在結構上等於一個名詞加一個定語從句; 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.
  Whoever comes will be welcome.
  Whoever fails to see this will make a big blunder.
  由連詞that引起的主語從句: 這類主語從句在大多數情況下都放到句子後部去, 而用代詞it做形式上的主語:
  That we need more equipment is quite obvious.
  It is impossible that I may not able to come.
  It doesn’t seem likely that she will be here.
  在口語中連詞that有時可以省略掉:
  It’s good you’re so considerate.
  It’s a pity you missed such a fine talk.
  由連線代詞或連線副詞***或whether***引起的主語從句: 這類主語從句, 也可以放到句子後部去, 前面用it做形式上的主語.
  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賓語從句: 和主語從句及表語從句一樣, 賓語從句也有以上三類.
  a*** 連線代詞或副詞引導的從句只是在某些動詞後能用作賓語.
  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.
  能跟這類賓語從句的常見動詞有: see, say, tell, ask, answer, know, decide, find out, imagine, suggest, doubt, wonder, show, discover, discuss, understand, inform, advise等. 這種動詞後也常用whether或if引導的從與作賓語:
  I don’t know whether these figure are accurate.
  I’m wondering if the letter is overweight.
  這種從句有時前面可以有另一個賓語:
  Has she informed you when they are to hold the meeting?
  Please advise me which book I should read first.
  有時這種從句也可用作及詞的賓語:
  Whether that is a good solution depends on how you look at it.
  He was not conscious of what an important discovery he had made.
  I was curious as to what he would say next.
  b*** 用that引導的從句作賓語的情形最為普遍, 在很多動詞如boast, say, think, insist, wish, hope, suppose, see, believe, agree, acknowledge, admit, deny, expect, explain, confess, order, command, suspect, dream, suggest, propose, know, mean, notice, prefer, request, require, report, urge, 以及doubt的否定和疑問式後面都可以用它.