9点30分 用英语写

six forty-five 或者 a quarter to seven （6：45）twelve twenty或者 twenty past twelve（12:20）nine thirty 或者 half past nine（9:30）

half past thirty

6:45 a quarter to seven
12:20 twenty past twelve
9:30 half past nine

a quarter to seven/forty past six
20 past 12
nine thirty/thirty past nine

6点45分：six forty-five或fifteen to seven
12点20分：twelve twenty或twenty past twelve
9点30分: nine thirty或half past nine

a quarter to seven
twenty past twelve
a half past nine

6点45分:
a quarter to seven 或 fifteen to seven 或 forty-five past six
12点20分:
twenty past twelve
9点30分:
half past nine 或 thirty past nine

6点45分 six forty-five
a quarter to seven
12点20分 twelve twenty
twenty past twelve
9点30分 nine thirty
half past nine

都是

6点45分 a quarter to seven
12点20分 twenty past twelve
9点30分 half past nine
保证正确