Friday
1.关于“某月某日，星期几”的说法，参见April 4
2.Sunday, Monday, Tuesday等词前面加上next或last形成状语短语，如They will come next Monday和She came last Friday。这种词单独用作副词是美国用法，如They will come Monday（下星期一）和She came Friday（上星期五）。
3.on Sunday, on Monday, on Tuesday等通常作next Sunday, last Sunday等解，如They will come on Sunday和They came on Monday。有时统指一般的星期几等，如We used to meet on Saturday。on the Sunday, on the Monday, on the Tuesday等通常指定某个星期几等，如She came on a Monday and went on the Thursday。有时统指一般的星期几等，如We used to meet on the Saturday。on Sundays, on Mondays, on Tuesdays等统指一般的星期几等，如We used to meet on Saturdays。of a Sunday, of a Monday, of a Tuesday等统指一般的星期几等，如We used to meet of a Saturday。
下面四句意思相同，第一句最普通：
- We used to meet on Saturdays.
- We used to meet on Saturday.
- We used to meet on the Saturday.
- We used to meet of a Saturday.
在美国也往往说We used to meet（没有on）Saturdays和Saturday we used to meet。注意Saturday是单数形式，用在句首。
4.Good Friday（耶稣受难日）指耶稣复活节（Easter）前两天的那个星期五。前面没有the。
5.Friday通常译作“星期五”。其实是每星期的第六天。每星期的第一天是Sunday，第二天是Monday，第三天是Tuesday，依次类推。
