Watching TV is bad for our eyes.

Reading books is my favorite hobby.

Playing sports regularly keeps you healthy.

Eating is an important thing.

Watching movies is my favorite pastime.

Reading is an art.

Smoking is prohibited here.

Climbing mountains is really fun.

Swimming is good exercise for your whole body.

Listening to music helps me relax.

Fighting broke out between the South and the North.

It is no use crying over spilt milk.

It is a waste of time persuading such a person to join us.

There is no saying when he'll come.

No smoking.

No parking.

Their coming to help was a great encouragement to us.

Retelling stories is very useful.

Studying abroad can be a good experience.

Keeping in contact with each other is definitely important.

Exchanging your ideas with other participants regularly can deepen your understanding of the drama.

这些句子展示了动名词作为主语在不同情境下的应用，希望对你有所帮助。