1．“七”英文是：Seven。
2．读音：英 [sevn]，美 [sevn] 。
3．There are seven continents in the world.世界上有七大洲。
4．Four multiplied by seven is twenty-eight.7乘4等于28。
5．I have seven roommates in my university.上大学时，我有七个室友。
