一周三次英语怎么写

　　I keep my mind active and coming to school three times a week, and walking up and down the steps, that kept me physically able.

　　这让我的头脑保持活跃，并且我一周三次去学校，从台阶上上上下下，这保持了我的体能。

　　By popular demand, the play will run for another week.

　　应广大观众要求，这出戏将加演一周。

　　I didn't have enough clothes to last a week.

　　我的衣服不够一周穿的。