7点40分 3点15分 6点30分 9点45分 12点50分 11点05分 10点58分用英语能用二种方法的要用二种方法

7点40分 seven forty,（forty past seven）轮派燃, twenty to eight
3点15分 three fifteen, （three a quarter), a quarter past three
6点30分 six thirty, (six a half), a half past six, a half to seven
9点45分 nine forty-five, a quarter to ten
12点50分 twelve fifty, (fifty past twelve), ten to thirteen
11点05分 eleven five, five past elven
10点腊虚58 ten fifty-eight, (fifty-eight past ten), two to eleven
括号内的少羡旅用

7点40分 seven forty / forty past seven / twenty to eight
3点15分 three fifteen/ fifteen passt three
6点30分 half past six
9点45分 forty-five past nine/ fifteen to ten
12点50分 fifty past twelve / ten to one o' clock
11点05分 five past eleven
10点58分 two to eleven
PS: 二楼的6点30分错了, 没旦伏有a half to seven的说法, 这是中式英语搜山的说法.
希望帮到世迟中你

20 to 8
a quarter past 3
half past 6
a quarter to 10
10 to 1
5 past 11
2 to 11

7：40seven forty(twenty to eight)
3:15three fifteen(a quarter past three)
6:30 six thirty(half past six)
9:45 nine fortyfive(a quarter to ten)
12:50 twelve fifty(ten to one)
11:05 eleven five(five past eleven)
10:58ten fiftyeight(two to eleven)