英语时间代表法

half past six
six thirty
一种是正常的表达方式，就像six thirty，fifteen....
还有的特殊时间就用词组啦，half past ,a quater
还有一种就是过了30之后就可以用差多少时间，比如是4：45，可以翻译成fifteen to four

It is six thirty.
It is half past six.
It is thirty to seven

thirty past six
six thirty

thirty to seven
thirty past seven