atfiveminutestoevery听力材料中的句子---WhendothetrainsleaveforLondon?---ThetrainsforLondon,sir?Theyleaveattenminutespasteveryhour,andtwentyminutestoeveryhour.有这样表示时间的用法?

Question

at five minutes to every 听力材料中的句子
---When do the trains leave for London?
---The trains for London,sir?They leave at ten minutes past every hour,and twenty minutes to every hour.
有这样表示时间的用法?

Answer 1

They leave at ten minutes past every hour.
每一小时的前十分钟发车
twenty minutes to every hour就是每一小时内的后20分钟的时刻