He is comfortable to sit on the chair.

他很舒服地坐在椅子上。

Sit on the chair.

请坐在椅子上。

They sit on the chair and read book together.

他们两个一起坐在椅子上看起书来。

Every night when tired to sit on the chair, it felt really serious day.

每天晚上疲惫地坐到椅子上时，才觉得真真切切地过了一天。

Then she asked Eric to sit on the chair and let George turn him visible.

她叫艾瑞克坐在椅子上，让乔治把他变回来。