请帮帮忙, 把信交给她

помоги, пожалуйста, передай ей письмо

帮帮忙，不要碍事。

Help out， don’t hinder.

帮帮他吧!

Help him!

我做不好，请帮帮我。

I can’t do it well. Please help me.

我正想找他来帮帮忙，可好他来了。

I was going to ask him to lend me a hand when he came just in time.

这么些活儿，得有个人帮帮你吧?

Surely you need some help with so much work.