Monday, Tuesday等表示星期的名詞如何用冠詞

英語表示星期的名詞有Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday，共七個，在通常情況下，它們前面不用冠詞。如：

I require my new coat by Monday. 我的新上衣要在星期一以前做好。

Tuesday would suit me very well for a meeting. 星期二開會對我來說很合適。

The concert has been postponed to Wednesday. 音樂會已推遲到星期三舉行。

I’ll set up a meeting for Thursday. 我星期四要組織召開一次會議。

Let’s shop on Friday. The supermarket will be very crowded on Saturday. 星期五去采購吧，星期六超市人太多了。

We had a visit from Richard on Sunday. 星期日理查德來拜訪我們。

但是，若表示不確定的某一個星期幾，則其前要用不定冠詞。如：

My birthday is on a Friday this year. 今年我的生日是在星期五。

She usually works at home on a Thursday. 她星期四通常在家工作。

He never opens up shop on a Sunday. 星期日他的商店從不營業。

You won't catch me working on a Sunday! 你絕對見不到我在星期日工作!

The calendar shows that Christmas will fall on a Tuesday. 日歷表明圣誕節是星期二。

Easter occurs on a Sunday in March or April. 復活節是3月或4月的一個星期天。

比較：

He left on Friday. 他是星期五離開的。

He left on a Friday. 他離開那天是星期五。

第一句on Friday，指大家心目中都知道的那個星期五；第二句用on a Friday，表明說話者只表明此事發生的那天是星期五，但到底是哪個星期五并不明確。

若需特指，則可在其前使用定冠詞。如：

We had a card from her on the Friday after she got back. 在她回去后的那個星期五我們收到了她的明信片。