Whatever it is, it certainly seems to work.无论它是什么, 看上去它肯定是起了作用。

If nothing is done there will certainly be an economic crisis.如果不采取措施, 就必将发生经济危机。

The public is certainly getting tired of hearing about it.公众绝对听腻了此事。

Certainly, pets can help children develop friendship skills.毫无疑问, 宠物能帮助孩子们掌握交友技巧。

So it was a surprise?—It certainly was!那么这是件意想不到的事？——一点儿不错！

Could you give me a lift?—Certainly.能搭你的车吗？——行。

You keep out of their way, don't you?—I certainly do.你会离他们远远的, 是吧？——那当然。

Perhaps it would be better if I withdrew altogether.—Certainly not!或许我干脆退出会更好些。——绝对不行！