Friend of mine was involved with this really scary dude.我的朋友和一個非常渣的家伙在一起

involve with涉及, 牽涉

He was deeply involved with the anti-drugs crusade.

他深深地涉入了反毒品運動。

You're too emotionally involved with the situation.

你在這件事上感情投入太多了。

She couldn't do it, so I stepped in.她沒法分手，所以我介入了

step in走進； 介入； 干預； 伸腳穿入

I asked him why he didn't step in and help stop the argument.

我問他，為什么他不進行干預，制止這場爭論。

The enemy got a chance to step in.

敵人乘虛而入。

they didn't want to deal with it themselves.那些人不想自己處理這種事

deal with討論；處理，對付； 涉及

I have a huge pile of letters to deal with.

我有一大堆信件要處理。

Many movies deal with commonplace themes.

許多電影的主題很平庸。