You should explain that you don't mind him watching TV all the time.

你应该跟他解释说你并不介意他一直看电视。

youdao

She looked at him earnestly. "You don't mind?"

她诚挚地看着他说：“你不介意吧？”

《柯林斯英汉双解大词典》

Xiao Ni, you had better keep away from dirty old Wei Gong. Don't let him corrupt your innocent mind.

小妮，你最好离龌龊的老魏公远些。别让他污了你的纯情。

youdao