星期四的英文是Thursday。
复数形式 Thursdays，缩写形式 Thur.。Thursday的第一个字母须大写，既可用作可数名词，也可用作不可数名词。
星期一：全写Monday缩写Mon.
星期二：全写Tuesday缩写Tues.
星期三：全写Wednesday缩写Wed.
星期四：全写Thursday缩写Thur.
星期五：全写Friday缩写Fri.
星期六：全写Saturday缩写Sat.
星期日：全写Sunday缩写Sun.
Thursday的英语句子：
1、I visited a friend of mine on the Thursday of last week.
上周的星期四我去拜访了一位朋友。
2、She's due to arrive on Thursday.
她预定星期四到达。
3、Look, I need you to do me a favor, all right? Thursday is Family Day. Spread the word. You guys are up.
你只能帮我一个小忙，星期四是家庭日，你们要出席，记得告诉其他人。
4、"If you say so, sir, " the bartender says, "but Thursday night, you came in to ask how soon the police were planning to shut us down. "
“如果您这么说，阁下，”男招待说“不过星期四晚上，你来问过关于警察打算什么时候来关闭我们这里的俱乐部。”
5、He dined with us the next day, and was to leave town again on Wednesday or Thursday.
他第二天跟我们在一起吃饭，星期三或星期四又要进城去。