巧记时间三介词 -- in, on, at 作者姓名：唐素娟 作者单位：广州从化市第七中学 适应学科：初中英语 适用教材：各种版本的初中教材
同学们，大家好。 你将学到： in, on, at 在时间名词前的具体用法。
翻译下列句子： 迈克出生于2001年。 Mike was born in 2001. 2.星期五我们有两节英语课。 We have two English classes on Friday. 3.我妈妈今天早上六点就起床了。 My mother got up at six o’clock this morning. in 2001 on Friday at six o’clock this morning
时间介词 in： in表较长时间，世纪朝代时代、 年、季节、月及一般（非特指）的 早、中、晚等。 如： in the morning, in the afternoon, in the evening, in the daytime, in July, in 1890s, in 2013, in summer等。
时间介词 on： on表示具体某一天及某一天的 早、中、晚。 如： on May 1st, on Monday, on New Year’s Day, on a rainy day, on a fine morning, on Sunday afternoon， on a cold night 等。
时间介词 at： at表示某一时刻或较短暂的时间， 或泛指圣诞节，复活节等。 如： at 3:20, at this time of year, at the beginning of, at the end of …, at the age of …, at Christmas， at night, at noon, at this moment等。
请注意： 3.我妈妈今天早上六点就起床了。 My mother got up at six o’clock this morning. 在last, next, this, that, some, every, each, today, yesterday, tomorrow, tonight 等词之前一律不用介词. We will visit the Great Wall this Sunday. Tom and Lucy meet every day. They had a party last weekend.
on at in on at in in / 练一练 用in, on, at填空或不填。 1. They have a PE lesson ____Monday. 2. Classes begin_____8:00. 3. We have four lessons___ the morning. 4. I watch TV play ____ Friday evening. 5. We have lunch _____noon. 6. Flowers come out _____ spring. 7. Lily came to China ___ May, 2008. 8. We’ll have an exam ___ next Monday on Monday at 8:00 in the morning on Friday evening at noon in spring in May, 2008 / next Monday
选择正确答案 1. A lot of students in our school were born ___ March, 1999. A. in B. at C. on D. since 2. Why did you get up so early ___ this morning？ A. on B. / C. at D. in 3. Children get gifts ___ Christmas and ____ their birthdays. A. on; on B. at; on C. in; in D. in; on March, 1999 练一练 this morning Christmas their birthdays
试一试 链接中考：2012广州中考之语法选择 … For example, people in the United States and Japan both celebrate Valentine’s Day_28_ February 14th. 26. … 27. … 28. A. on B. in C. at D. by February 14th
Thank you!