1. at加时间点。如： They came home at seven o’clock.2. in（1）用在年份、月份、季节前或表示泛指的上午、下午、晚上等。 如：in , in March, in spring, in the morning, in the evening（2） 在一段时间之后,常用于将来时，用于回答How soon引导的特殊疑问句。如：How soon he will arrive here? ----He will arrive in two hours.3. on（1）用于具体的某一天或具体某一天的上午、下午或晚上等。如：On Christmas Day On a cold morning On May 4th （2）星期前用on。如：On Friday On weekens
时间介词用法练习：
( ) 1. A lot of students in our school were born____March, 1981.
A. in B. at C. on D. since
( )2. He suddenly returned____ a rainy night.
A. on B. at C. in D. during
( ) 3. My grandfather was born____Oct. 10, 1935.
A. on B. in C. at D. of
( ) 4. Mike does his exercises ____ seven _____ the evening.
A. on; to B. at; in C. by; of D. at; on
( )5. Children wake up very early____the morning of Christmas Day.
A. in B. on C. for D. at
( )6. Lucy was born____ the night of May 12, 1984. . ...
A. on B. in C. at D. to
( ) 7. Mrs Brown came to China ____ 1996.
A.on B. of C. to, D. in
( ) 8.I sometimes help my mom with the housework____sundays.
A. on B. in C. at D. of
