The document discusses the use of prepositions of time - in, at, on. It provides examples of how each preposition is used with time expressions like days, dates, times. In is used with periods of time like months, years, or morning/evening. At is used with specific times or clock times. On is used with specific dates or weekdays. The document also includes exercises for the reader to practice using these prepositions of time correctly.

1. Preposition of Time In At On

2. Are used in the time expression, as follow: In the past, in the present, in the future, in the morning, in the afternoon, in the evening. At noon, at night, at midnight At + “clock time” In + a month/a year/a century On + a date/a weekday

3. In the future Please be on time in the future. In the evening I usually watch TV in the evening. Example

4. example At night, at midnight We sleep at night, I was sleep at midnight. At + “clock time” I fell asleep at 9.30 (nine thirty).

5. In + month I was born in October. On + day I went to a movie on Thursday. Another examples

6. 1.History is the study of events that occurred _____ the past. 2.We don’t know what will happen ____ the future. 3.Last year I was junior high school. ___ present, I am a senior in high school. 4.I moved here ____ September 7. 5.I moved here ___ the fall. Exercises

7. 6.I work ___ the morning. ___ the afternoon, I have an English class. 7.___ Thursday afternoon, I have an English class. 8.My plane was supposed to leave ___ 7:07 P.M., but it didn’t take off until 8.30.