1. PREPOSICIONES: DE TIEMPO Y LUGAR: AT, IN, ON. ANTONIO LÓPEZ ESTRADA AUTOR PREPOSICIONES DEL IDIOMA INGLÉS

2. General information about prepositions We normally use prepositions in front of nouns phrases or nouns, pronouns or gerunds to express a relationship between one person, thing or event. Space Time Cause Some relationships expressed by the prepositions are:

3. At is a preposition It shows specific time. Examples: I go to bed at midnight. I have lunch at 11:00 a. It shows direction. Examples: Look at the board. Look at the sky. Look at the picture. It shows what somebody is doing. Example: He is at work.

4. It is used to tell that a person or thing is inside. Example: My cell phone is in the car. It is used to show a place (country, room or building). Examples: He works in Mexico. She is in the living room. He is in the post office. It is used to show time (months, years, seasons, periods of time). Examples: in April. in 1999. in the winter. in a week, in the future. In is a preposition.

5. It is used for days and dates: Examples: I go to school on Monday. My birthday is on February 14 TH It is used to show where something is: Example: The flowers are on the desk. It is used to talk about a subject. Example: They watch a movie on cooking. Shows what you are using. Example: I am talking on the phone On is a preposition.