时间介词 (at, in ,on) 的用法与练习1. at指时间表示：（1）时间的一点、时刻等。如：They came home at sunrise （at noon, at midnight, at ten o’clock, at daybreak, at dawn）. （2）较短暂的一段时间。 可指某个节日或被认为是一年中标志大事的日子。如：He went home at Christmas （at New Year, at the Spring Festival, at night ）. 2. in指时间表示：（1）在某个较长的时间（如世纪、朝代、年、月、季节以及泛指的上午、下午或傍晚等）内。如：in 2004, in March, in spring, in the morning, in the evening, etc （2）在一段时间之后。一般情况下，用于将来时，谓语动词为瞬间动词，意为“在⋯⋯以后”。如：He will arrive in two hours. 谓语动词为延续性动词时，in 意为“在⋯⋯以内”。如：These products will be produced in a month. 注意： after用于将来时间也指一段时间之后，但其后的时间是“一点”，而不是“一段”。如：He will arrive after two o’clock. 3. on 指时间表示：（1）具体的时日和一个特定的时间，如某日、某节日、星期几等。如：On Christmas Day （On May 4th ）, there will be a celebration. （2）在某个特定的早晨、下午或晚上。如：He arrived at 10 o’clock on the night of the 5th. （3）准时，按时。如：If the train should be on time, I should reach home before dark. 练习( ) 1. Children get gifts ____ Christmas and ____ their birthdays. A. on; on B. at; on C. in; in D. in; on ( ) is nothing ____tomorrow afternoon, is there? -----No. We can have a game of table tennis. A. on B. in C. out D. up ( ) 3. A lot of students in our school were born ____ March, 1981. A. in B. at C. on D. since ( ) 4. He suddenly returned____ a rainy night. A. on B. at C. in D. during ( ) 5. My grandfather was born ____ Oct. 10, 1935. A. on B. in C. at D. of ( ) 6. The train is starting ___ five minutes. A. in B. at C. for D. still ( ) 7. Mike does his exercises ____ seven _____ the eve...
