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.
去买一本《英语基础手册》里面肯定有