help的形容词性

I called the police but they weren't very helpful.

我叫了警察，但他们不太肯帮忙。

You'll find it helpful to talk things over with a friend.

把情况和朋友详细聊一聊，你会觉得大有帮助。

The people I spoke to were very helpful.

我交谈过的人都很肯帮忙。

It's natural to feel helpless against such abuse.

对这种虐待感到无能为力是自然的。

He lay helpless on the floor.

他无助地躺在地板上。

The audience was helpless with laughter.

观众情不自禁地大笑。