主語從句有三類:
1. 由what 等代詞引起的主語從句:
這類從句可由三類代詞引起:
l)what(關系代詞型的what):
What you need is more practice.
你需要的是更多的練習。
What I saw made me mad.
我看到的情況使我非常生氣。
2) Whatever:
Whatever I have is yours, too.
我有的一切也都是你的。
Whatever has been said here must be kept secret .
這里說的一切話都必須保密。
3) Whoever:
Whoever comes will be welcome.
誰來都歡迎。
Whoever wants it may have it.
誰要都可以給他。
2.由that引起的主語從句(that有時可以省略):
這類主語從句大多數用先行詞作it 形式上的主語,而把真正的主語放到句子后部,以保持句子的平穩(wěn)(a),也有少數直接用這種從句作主語,不用it (b):
a. It's a pity (that)you can't come.
真遺憾你不能來。
It seemed she had got the job.
看來她已得到這份工作了。
b. That she is still a live is a consolation.
她還活著,這是使人寬慰的。
That Shelley became a poet may have been due to his mothers influence.
雪萊成為詩人可能是受他母親的影響。
3.由連接代詞或連接副詞及whether 引起的主語從句:
這類從句可以直接放在句首(a),也可以放到后部,前面用先行詞it 作形式上的主語(b):
a.Who are to be sent there will be discussed at the next meeting.
究竟派誰去將在下次會上討論。
I am going anyway. Whether or not she will go is up to her to decide.
不管怎樣我是要出的,她去不去由她自己決定。
b. It was a mystery how the burglar got in.
小偷怎么進去的是一個謎。
It won't make too much influence whether he will joinus.
他是否參加不會有多人影響。