<例句>
It's certain that prices will go up.
物价肯定要上涨的。
<语法分析>
主语从句可以由that引导，此外还可由连接代词或连接副词引导，关系代词what或whatever也可引导主语从句。由that引导的主语从句是用的最多的一种主语从句，有时为了强调，可以把从句放在句首，而绝大部分主语从句则借助先行主语放到句子后部去。
<触类旁通>
(1)That she hasn't phoned is odd.
她没有来电话很奇怪。
语法分析：that引导的主语从句。
(2)That he was chosen made a tremendous stir in his village.
他被选中在他村子里引起很大轰动。
语法分析：有时为了强调或谓语较长时，可以把从句放在句首。
(3)It is natural that they should have different views.
他们有不同观点是很自然的。
语法分析：it+be+形容词或名词+that从句。
(4)It happened that he wasn't in that day.
恰巧他那天不在。
语法分析：it+动词+that从句。
(5)It's doubtful whether we'll be able to come.
我们是否能来还是个疑问。
语法分析：连接代词或连接副词可引导主语从句。
(6)What will be,will be.
该发生的事，总会发生。
语法分析：关系代词型what也可引导主语从句。
<巩固练习>
(1)______ he is still alive is a consolation.
(2)It's strange ______ she knows nothing about it.
(3)It may be ______ you'll prove yourself the most suitable.
(4)______ is to be sent there hasn't been decided.
(5)It was clear enough ______ she meant.
(6)______ is over is over.
(7)______ he says goes.
(8)______ she saw made her tremble.
<参考答案>
(1)That (2)that (3)that (4)What (5)what (6)What (7)Whatever (8)What
