1.stay vi.保持。它是半系動詞，常和形容詞搭配使用。
The temperature has stayed hot this week.
本周氣溫一直都很熱。
【常用搭配】stay on 繼續停留，保持
I'm not sure whether to resign or stay on.
我拿不準主意是辭職還是留任。

2.give sb. a hand 幫某人一個忙
The box is too heavy. Can you give me a hand?
箱子太重了。你能幫我下嗎？

3.hang in 堅持
We must hang in whenever we come across difficulties.
我們遇到困難時一定要堅持不懈。

4.smack vt.打，摑
I'd a good mind to smack him for being so rude!
他這樣粗野，我真想揍他。
【常用搭配】smack down 責罵(便喪失地位)
The boy was smacked down by his parents.
這孩子被父母責罵一頓。

5.calm down （使)平靜, （使)安靜
Just calm down a bit!
你先靜一靜！