翻译英语：1、在3:45 2、在4:15 3、在5点 4、在6:30 5、在7:15 6、在9:45

1、在3:45
at three forty-five
at a quarter to four
2、在4:15
at four fifteen
at a quarter past four
3、在5点
at five (o'clock)
4、在6:30
at six thirty
at half past six
5、在7:15
at seven fifteen
at a quarter past seven
6、在9:45
at nine forty-five
at a quarter to ten
有不明白的地方欢迎追问,