请根据题目要求进行教学分析。

以下片段选自某课堂实录：

T: Can you watch TV every evening, S1?

S1: Sorry, I can’t.

T: On what day can you watch TV every week?

S1: On Saturday and Sunday.

T: Oh, we can say you can watch TV twice a week.I can go shopping on Monday and Tuesday evenings.So we can say I can go shopping twice a week.What does twice here mean?

Ss: It means“两次”.

T: Good.