How to learn English from the sitcoms

You may be able to find them on youtube.

BBC iplayer could help.

Netflix.

However, I would suggest that you look for more relevant educational material to start with.

Thanks you a lot. I often try my best to listen what actors say instead of watching.

I had a friend, a gentleman who was blind. He had a tuner which allowed him to listen to television programs. It was a revelation to me the difference it made not to see the actors as they delivered their lines. I endorse what his Lordyship says, and add that you might profit from not looking at the television as you listen to it.