今天星期几英语怎么说？在英语中，星期一到星期五分别是Monday, Tuesday, Wednesday, Thursday, Friday，星期六和星期日则是Saturday和Sunday。

如果有人问你今天星期几，你可以回答：Today is Monday/Tuesday/Wednesday/Thursday/Friday/Saturday/Sunday，或者缩写为今天是Mon/Tue/Wed/Thu/Fri/Sat/Sun。

当然，在英语中还有其他表达方式，比如可以说Today is the first/second/third/fourth/fifth/sixth/seventh day of the week，也可以说Today is the beginning/middle/end of the week。

总之，回答今天星期几的问题并不难，只需要熟悉一些基本的英语词汇即可。