我们的老师很幽默。他擅长讲笑话（翻译成英文）

My teacher has a good sense of humour,He(She) is good at making jokes.

My teacher is very humourous, and he is good at telling jokes.

Our teacher is very humorous. He is good at telling jokes.
我们的是 our

Our teacher has a great sense of humour. He is good at making jokes

our teacher is very humorous, he is good at telling jokes.

Our teacher is full of humour ,he bes skilled at speaking.