例句：

　　I'm certainly never going there again.

　　我肯定不會再去那里了。

　　'Certainly not,' he replied emphatically.

　　“當然不。”他斷然回答道。

　　Moby certainly has a fine ear for a tune.

　　莫比對音調的分辨能力一定很強。

　　Our future looks uncertain.

　　我們似乎前途渺茫。

　　Her future is uncertain.

　　她前途未卜。

　　They're both uncertain about what to do.

　　他們兩人都拿不定主意該怎么辦。