I happened to over hear what he said.

我碰巧听到了他所说的话。

I appreciate your help very much.

我非常感激你的帮助。

I've got a strange feeling that this marriage won't last very long.

我有一个奇怪的感觉，这段婚姻不会长久。

She is dying to know where you've been.

她极想知道你到哪去了。

He jumped at the offer.

他欣然接受了这个工作机会。

The rules ought to be observed.

这些规则就予以遵守。