一、表示時間的介詞： 1、at：用于表示時刻，時間的某一點。 at dawn在黎明時候 at noon 在中午 at night 在夜間 at midnight 在午夜at six oclock 在6點鐘 at 7：30 (seven thirty) 在7點半 at half past eleven 在11 點半 seven to five 5點差7 分(半小時以上) five minutes past two 2點過5 分 a quarter to two 1點45 分 2、on:用于星期、某天、某一天的上午、下午、傍晚。指具體的某一天時，也一律用on 。on Tuesday在星期二 on Sunday morning在星期天早上 on May 8th,2009 在2009年5月8號3、in:（1）用于表示：月，季節，年，泛指上午，下午，晚上；in 1986 在1986 年 in April 在四月 in July l983 1983年7 月 in spring 在春季in summer 在夏季 in autumn 在秋季in winter 在冬季 （2）與一般將來時連用，表示“在之后”。I am going to finish my homework in two days. 我打算兩天后完成我的作業。4、before:在.之前before breakfast5、after:在.之后after school6、fromto : 從到from Monday to Friday7、for：達之久（表示經過了多少時間）I cleaned my bedroom for about thirty minutes.8、during：表示持續一段時間during the winter holiday， during the war隨堂練習題一、選擇填空：1. He came to school _ 8:30 this morning.A. forB. onC. at D. in2. This story happened _ the morning of October 19th.A. of B. on C. in D. at 3. John always does his homework _ 9:00 p.m.A. at B. on C. to D. in4. He was born _ March 8th, 1988.A. in B. on C. at D. from5. China became a WTO member _ December 11th, 2001.A. of B. on C. at D. in6. Monday comes _ Sunday.A. afterB. before C. behind D. from7. Lily often gets up _8:00 _ Sundays.A. on, in B. in, on C. at, on D. in, at8. The story happened _1945.A. onB. at C. inD. with9. How many lessons do you have_ the morning?A. onB. at C. inD. before10. Lets go for a walk _ supper.A. forB. at C. afterD. in11. I can study well _night.A. forB. at C. afterD. in12. The students can have a good rest _ the summer holiday.A. toB. at C. duringD. before13. They work hard _ morning _ evening.A. on, onB. at, at C. in, andD. fromto14. The sports meet will begin _ 9:00_ Monday morning.A. on, in B. at, on C. in, on D. in, at二、閱讀短文，填入適當的介詞。I get up_6:30 _the morning. I have breakfast _7:00, and I go to school _ breakfast. We have four classes _ the morning, and we have two classes_ the afternoon. I often play ping-pong _ school.三、用適當的介詞填空。1. We go home _ half past five _ the evening.2. Do you often play computer games _ night?3. He has lived in Beijing _ ten years.4. I was born _ 1998.5. We have no classes _ Sunday.6. Teachers Day is _ September 10th.7. They have a party _ Childrens Day.8. There are seven days _ a week.9. Today is the first day of school _ the holiday.10. We often visit relatives（親戚） and friends _ the Spring Festival.四、在文中需要的地方填入適當的介詞。I go to school _ Monday _ Friday. I get up _ 7:00_ every morning. I go to school _ half past seven. We have four classes _ the morning. I have lunch _ school.