If you do not know what has got into someone, you do not understand why they are behaving strangely.

I can't think what's got into him. He doesn't usually get so angry. 我真想不出他这是中了什么邪，他平时可不会气成这样的。

to become interested in an activity or subject, or start being involved in an activity

She's been getting into yoga recently - she does three classes a week. 她最近开始对瑜伽感兴趣了——她一周要去上3次瑜伽课。

to (cause someone to) become involved in a difficult situation, often without intending to

After he lost his job, he got into debt. 他失业后就欠了一屁股债。

Are you trying to get me into trouble? 你是不是在想方设法让我麻烦缠身？