7:20 in Engpsh can be said as "seven twenty" or "twenty past seven."
The use of "past" and "to" to indicate the time before and after the hour is called "quarter-past" and "quarter-to" respectively.
For example:
It's seven twenty. (7:20)
It's quarter past seven. (7:15)
It's twenty past seven. (7:20)
It's quarter to eight. (7:45)
这种使用“past”和“to”来表示小时之前和之后的时间称为“quarter-past”和“quarter-to”。
例如：
现在是七点二十。(7:20)
现在是七点十五分。(7:15)
现在是七点二十分。(7:20)
现在是八点差十五分。(7:45)