Is he watching TV at home?

他正在家看电视吗？

youdao

He was lying sprawled in an armchair, watching TV.

他四肢伸开正懒散地靠在扶手椅上看电视。

《牛津词典》

He hasn't got any hobbies—unless you call watching TV a hobby.

他没有什么爱好—除非你把看电视也称作爱好。

《牛津词典》

He enjoys watching TV while he works out.

CNN: Weight losers combat fear of exercise, schoolyard torment

De La Rosa said he was watching TV in the trainer's room just before his start Tuesday night when he saw Blue Jays pitcher J.

WSJ: De La Rosa outduels Kuroda, Rockies beat Yanks 2-0

He stopped watching TV - the one in the chair.

BBC