一周 a week整个一周 all the week or the whole week第二个星期天 the second Sunday 她星期天经常干什么? What she often does on Sunday?他们星期六上课吗? Do they have classes on Saturday ?星期一我不待在学校还能去哪里呢？ Where else can I go on except Monday staying at school?不准在星期天睡得很晚 Don't wake up very late on Sundays.
