Unit3UsingLanguage介词使用主题讲解inaton用法课件--高中英语外研版（2019）必修第三册.pptx

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1、Learning when to use various prepositions in another language can cause quite a headache.Luckily, in English, we can identify many specific situations in which the prepositions in, on, and at are used in order to figure out when it is appropriate to use each one. Two of the most common contexts in w

2、hich in, at, and on are used involve identifying where someone or something is (place) and when something happened (time). in, on, at的地点用法PrepositionSituationsExamplesatat a very specific point, location, or place Im working at the bakery. The shop is at 455 Main Street. Someone is at the door.onon

3、a surfaceExceptions: general street names and close to a river The painting is on the wall. Her ring is on her middle finger. I live on Grove Street.inin an enclosed space, or a general area that contains borders or boundaries She has a penny in her pocket. I left my wallet in the car. The children

4、are in the garden. They live in New York City.When referring to buildings or other confined areas, both prepositions at and in can be used, depending on the context. If you would like to describe the general location of where sb/sth is, you should use at.For example, Mary is at the school.However, i

5、f you need to emphasize that sb/sth is inside the building or area, you can use in.For instance, Mary is in the school.根据不同情境选择介词，通过in和at的基本含义具体翻译就知道有无差别了。in, on, at的地点用法试比较（翻译）：试比较（翻译）：in the corner （of the wall），at the street corner, on the corner of the desk,在角落里，在墙角，在街道拐角处，在桌角上，记住单词的基本含义，通过翻译就很容

6、易区分了记住单词的基本含义，通过翻译就很容易区分了in, on, at的时间用法固定短语：固定短语：in the morning/afternoon/evening在早晨/下午/傍晚at noon/night在中午/夜晚, （不强调范围，强调的话用during the night）early in the morning=in the early morning在大清早late at night在深夜on the weekend在周末 （英式用at the weekend在周末， at weekends每逢周末）on weekdays/weekends在工作日/周末， on school da

7、ys/nights在上学日/上学的当天晚上in, on, at的时间用法不加介词不加介词this, that, last, next, every, one, yesterday, today, tomorrow, tonight，all，most等之前一般不加介词。等之前一般不加介词。如，this morning 今天早晨（on）that day在那天 （that day更常用些）last week上周 next year明年the next month第二个月（以过去为起点的第二个月，next month以现在为起点的下个月）every day每天 one morning一天早晨 yest

8、erday afternoon昨天下午tomorrow morning明天早晨all day/morning/night整天/整个早晨/整晚most of the time （在）大多数时间in, on, at的时间用法PrepositionSituationsExamplesatSpecific TimesHours/minutes of the dayTimes of day (e.g. dawn, midnight, noon, sunrise, bedtime) Well meet you at 6 oclock. The show starts at 4:45. I hate dri

9、ving at night.onSpecific Days and DatesDates,Days of the week,Weekends+Holidays(NamE),Birthdays The party is on May 5th. They work out on Mondays. I relax on the weekend. He left on Christmas day.inMore General TimesMonths,Seasons,Years,Centuries,Time Periods,Past/Future,Future Times,Exception for Times of Day: morning, afternoon, evening I saw him in August. We ski a lot in the winter. You graduated in 2005. She grew up in the 90s.