时间名词前介词的用法 一、用in 的场合 (1)表示“在某年/月/季节”这个含义时,须用介词 in。例如: in 1980. (2)表示“从现在起一段时间以后”时,须用介词 in。 例如:They will go to see you in a week. (3)表示“在某世纪”时,须用介词 in. 例如:This machine was invented in the eighteenth century. (4)表示” 在早上、下午、晚上“须用介词 in. 例如: in the morning / evening / afternoon 二、用on 的场合 (1)表示“在具体的某一天”或“(在具体的某一天的)早上、中午、晚上”等,须用介词 on。 例如:on May 10th,1982,on a rainy morning, on a summer afternoon. 练习: This festival is a cheerful occasion, for ____this day, the dead are said to return to their homes and they are welcomed by the living 这是个欢乐的日子,据说这一天,死者回家而活着的人欢迎他们 Mother's Day is ______the second Sunday of May.It’s a day to thank mothers. On that day mothers usually get flowers and cards from their children. (2)表示“在星期几”或“在星期几的早上、中午、晚上”等,须用介词 on。 例如:on Saturday , on Saturday morning, on weekdays 在平时/周日 (3)表示“在某一节日”时,须用介词 on。 例如:on Mid-autumn Festival, on Teachers' Day. 注意:当morning,evening,afternoon 被of 短语修饰,习惯上用 in,而不用 on.例如: in the early morning of September 10th 在9月10 的清晨;in the late afternoon of September 12th 在9月12 日的傍晚。 三、用at 的场合 (1)表示“某一具体时刻(即几点几分时)”,须用介词 at。例如:at six (2)用在特定的时候(时节、时机)时,须用介词 at。例如: They were happy at that time.他们那时很幸福。 (3)表示“在中午、在夜晚、在午夜、在周末(也可用 on)”时,须用介词 at。 例如: at midnight, at/on weekends What do you often do at noon? 你中午经常做些什么? You can see many stars in the sky at night. 夜晚你能看到天空中有许多星星。 (4)表示“在……岁”时,须用介词 at。例如: At the age of nine ,the boy could swim well. 在九岁的时候,这孩子就游泳游得很好了。 四、用by 的场合 by+时间名词。意为:“到…时(已发生某事),此时谓语多用完成时;最晚、不迟于…,在…之前”。 如:by now/then/this time/next Friday/the end of/three o`clock 等。 By the end of last year,another new gymnasium had been completed. 到去年年底,又有一座新体育馆峻工了。 The train leaves at 6:00 pm.So I have to be at the station by 5:40 pm at the latest. 火车下午六点开,所以最晚我得五点四十赶到车站。 时间名词前不用介词的情况 1.在today, tomorrow, yesterday, the day before yesterday, 等表示时间概念的名词前一般不用介词。 例如: 1) What are you going to do tomorrow? 2) We have had six lessons today. 3) We had a good time the day before yesterday. 2.由this, that ,these, those 等用于表示时间概念的名词前,前面往往不加介词。例如: 1) That morning he got up very early. 2) What are you busy with these days? 3.由next, last, the next, the last 等用于表示时间概念的名词前时,前面不用介词修饰。例如: 1) We planted many trees last spring. 2) She said she would pay a trip to Suzhou the next month. 3) The very next time I saw her, she was working in London. 4.在each, any, every, some, all 等用于表示时间概念的名词前,一般不用介词来修饰。例如: 1) The buses go every 10 minutes. 2) Jack coughed all night. 3) We have to get up very early every/each day.