这个人一定在等什么人用英语怎么写

This man must be waiting for someone

一定───certain;这个人───this man

you absolutely certain about this?───你对这事绝对确信无疑吗？

If the government does not yield, it should face sufficient military force to ensure its certain and swift defeat.───如果政府不让步，它就会面临重兵围困，必将迅速落败。

The witnesses were each perfectly certain of what they said.───证人们个个对自己所说的话十分肯定.

These animals thrive on the leaves of certain trees.───这些动物靠吃某些树的叶子长壮.

There are a lot of preliminaries to be gone through before you can visit certain foreigners.───在访问某些外国人之前要做好许多准备工作.

He was too certain of her love to be deceived by such talk.───他确信她的爱,因而不会被这种谣言所欺骗.

This letter made me certain of his innocence.───这封信使我相信他是无罪的.

A period of depression can be a perfectly natural response to certain aspects of life.───某段时间感到抑郁可能是对生活某些方面很正常的反应。

Children are certain cares, but uncertain comforts.

Certain problems were apparent from the outset.

He had been miraculously saved from almost certain death.

Nothing so certain [sure] as death.

Certain varieties cannot be fertilised with their own pollen.