We are under an obligation to help.

们有义务。

She was only too pleased to help.

她很乐意。

You can rely on me for help.

你可指望。

We can depend on him for help.

们可以指望他。

Help arrived in the shape of a policeman.

的是一位警察。

I gladly avail myself of your offer.

很乐意接受你的。

His presence is indicative of his willingness to help.

他的出席示他愿意。

His impotence to help made him despair.

他无力,感到很失望。

I was somewhat puzzled at his unwillingness to help.

他不愿意有点困惑。

I'm counting on you to help me through!

正指望你到底呢！

Would she take it amiss if I offered to help?

要是提出，她会见怪吗？

You may ask anybody here for help.

你可以请求这里的任何人。

The monitor is a person who seldom asks a boon of others.

们班长是个很少请人的人。

Will you exercise your influence on my behalf?

你愿意运用你的权力给吗？

Through the instrumentality of the police he was able to locate his relatives.

靠警察, 他找到了他的亲属。

After much huffing and puffing, he agreed to help.

他发了好一阵脾气，最终还是同意了。

At election time the party needs a lot of voluntary helpers.

大选时, 该党需要许多义务的人。

Through the good offices of a friend, I was able to get a ticket.

由于朋友的大力, 才能得到一张票。

She definitely had an ulterior motive in offering to help.

她主动提出, 肯定有不可告人的动机。

We’re only too pleased to help.

们非常愿意。