九点四十五分 meaning in Chinese

at fifteen to ten = at a quarter to ten = at nine forty-five

It ' s 9 : 45 . it ' s time for math class
九点四十五分。到了上数学课的时间了。
It ' s nine forty - five . ( it ' s a quarter to ten
现在是九点四十五分。（现在是差一刻十点。）
The accident happened between a quarter to ten and the hour
那件事故发生在九点四十五分和十点整之间。
Meryl : yes , it ‘ s only a quarter to ten and we ‘ ve been at it for almost four hours
梅里尔：是啊，现在才九点四十五分，而我们已经工作了将近四小时。
Boss : you were late yesterday , too . you got to work at nine twenty . on monday , you got here at quarter to ten
老? ：你昨天也迟到了，九点二十分才到公司。星期一你九点四十五分才到。