改为同义句 I spend about half an hour watching TV every day.

1. I spend about half an hour watching TV every day.
= I spend about half an hour on TV every day.
= It takes me about half an hour to watch TV every day.
2. They always have fun on the playground.
= They always enjoy themselves on the playground.
= They always have a good time on the playground.
3. She is a very good basketball player.
= She is very good at playing basketball.
= She does very well in playing basketball.

I wathch TV for 0.5h per day.
They play on the palyground.
She is good at basketball.

I watch TV for half an hour every day
They play happily in the playground
She plays basketball well