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 tremendousstir 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 havedifferent 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 tocome.

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 aconsolation.

(2)It's strange ______ she knows nothingabout it.

(3)It may be ______ you'll prove yourselfthe most suitable.

(4)______ is to be sent there hasn't beendecided.

(5)It was clear enough ______ she meant.

(6)______ is over is over.

(7)______ he says goes.

(8)______ she saw made her tremble.

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