1.Thursday的意思是“星期四,礼拜四”,指一周的第五天。
2.Thursday前一般不用冠词,有时可加定冠词the来表示“所谈到的那一周的星期四”。
3.Thursday表示“某个星期四”时可加不定冠词a。
4.表示“在星期四”时,一般用介词on,但如果有this, that, last, before, every等词修饰时,不能再用介词on。
5.Thursday可缩写为Thur.或Thurs.。

We decided to stand over the meeting till Thursday.我们决定把会议推迟到星期四举行。
He gets his wages each Thursday.他每星期四领工资。
She left last Thursday.她上星期四走了。
Mrs. Jones is at home on Thursday.琼斯太太每星期四在家接待客人。
My birthday is on a Thursday this year.今年我的生日是在星期四。
She arrived on the Thursday and left on the Saturday.他星期四到,星期六走。
We do our shopping on Thursdays.我们所有的采购都在星期四进行。
She works Thursdays.她每星期四上班。
Another prisoner was released on Thur(s).星期四又释放了一名犯人。

［词源］  ＜古英语Thuresdæg(献给雷神的日子)