英文9点30分、2点20分、7点40分、5点15分怎么写

9:30:half past nine(nine thirty)
2:20:twenty past two(two twenty)
7:40:twenty to eight(seven forty)
5:15;a quarter past five (five fifty)

Nine and half；Twenty past two；Forty past seven；Five and quarter！

nine thirty
half past nine
two twenty
twenty past two
seven forty
twenty to eight
five fifteen
a quarter past five
fifteen past five
希望能够帮到楼主

half past nine
twenty past two
twenty to eight
a quarter past five