adj.令人心煩意亂的；令人苦惱的

動詞upset的現(xiàn)在分詞形式.

I didn't mention it because I was afraid of upsetting him/afraid (that) I might upset him. 我沒有提起那件事，因為我怕他心煩意亂。

The drunk was upsetting all the other customers and the landlord decided it was time to show him the door. 這醉漢使其他所有的顧客心煩意亂，因此店主決定該把他趕出門外。

How upsetting! 真叫人心里不安！