第1个回答 2010-08-28
七点半 half past seven ;
七点差15分 a quarter to seven;
七点15分 a quarter past seven;
七点整 seven o'clock本回答被提问者采纳
第2个回答 2010-08-28
half past seven
a quarter to seven
a quarter past seven
seven o'clock
第3个回答 2010-08-28
七点半：half past seven
七点差15分：a quater to seven
七点15分：a quater past seven
七点整:seven O'clock