give someone a hand 帮助某人；帮忙；帮某人一把

【例句】
We can all make time to give someone a hand.
花一点时间，去帮助其他人，这是我们每个人都可以做到的。

Give someone a hand I can't do this alone. Can you give me a hand?
我自己作不了这个啊。你能不能帮把手？