bardzo zainteresowany 用英语:

We stayed at home because Cathy wasn’t very keen on going out.

Her father wasn't too keen on it.

I am really keen on holidays that offer sporting activities.

She's keen on (playing) tennis.

What kind of music are you keen on?

I’m not keen on cabbage.

Jim is very keen on football and he goes to watch matches every Saturday.

She's very keen on cycling. She does about 50 kilometres every weekend.

I’ve never been keen on boxing. It’s far too violent for me.

I’m keen on football so I watch it most weekends.

Being keen on something may or may not lead to addictive behaviour.

(talk) In the first place, you will recall that in the beginning we were not very keen on ... about these Arab revolts

She's very keen on cycling.

I am keen on travelling

My neighbours are keen on playing golf.