A preposition shows a relationship between its object and other words in a sentence. The preposition may be in the form of one word (at, by, in, on, etc.) or in the form of a phrase that functions as a unit (in front of, by way of, etc.)
Some of the relationships that prepositions express are place or position, time, manner, direction, and agent.
| The book is on the desk. | (place or position) |
| The boy ran toward the house. | (direction) |
| The man arrived at ten o'clock. | (time) |
| He travels by train. | (manner) |
| The book was written by him. | (agent) |
A preposition + an object forms a phrase. This kind of phrase usually functions as a modifier (adjective or adverb).
| The report of the meeting was read. | (adjective) |
| We go to class at ten o'clock. | (adverb) |
| | | on | | |
| | | in | | |
| | | by | | |
| The paper is | | beside | | the desk. |
| | | near | | |
| | | against | | |
| | | under | | |
| | | behind | | |
| | | in back of | | |
| | | in front of | | |
| He is sitting | | beside | | her. |
| | | near | | |
| | | by | | |
| | | in | | |
| | | inside | | |
| | | outside | | |
| | | in front of | | |
| Jack is | | in back of | | the car. |
| | | behind | | |
| | | underneath | | |
| | | on top of | | |
| | | across the park. | | |
| | | around the park. | | |
| | | under the bridge. | | |
| | | down the street. | | |
| They walked | | up the street. | | |
| | | over the hill. | | |
| | | through the park. | | |
| | | on the sidewalk. | | |
| 1. | at | Elizabeth is at the store. |
| Is Mary at home? | ||
| 2. | to | Elizabeth went to the store. |
| from | Mr. MacDonald is from Scotland. | |
| 3. | in | Mr. Brown is sitting in the leather |
| chair in the lobby. | ||
| on | Put a stamp on the envelope. | |
| Please sit on the sofa. | ||
| 4. | by | The matches are over there by the |
| cigarettes. | ||
| beside | The napkin is placed beside the plate. | |
| near | They are sitting near the window. | |
| against | Don't lean against the stove. | |
| 5. | over | Our apartment is directly over yours. |
| A plane flew over our house at noon. | ||
| under | The box is under the table. | |
| beneath | The closet is beneath the stairs. | |
| underneath | Put a pad underneath the rug. | |
| on top of | The carpenter is on top of the house. | |
| 6. | behind | The chair is behind the desk. |
| in back of | John is standing in back of Harry. | |
| in front of | There is a car parked in front of the | |
| house. | ||
| 7. | up | I saw Mr. Jones walking up the street. |
| down | There is a service station about two | |
| miles down the road. | ||
| 8. | across | They live across the street from us. |
| around | Let's take a walk around the block. | |
| through | I took a walk through the park | |
| yesterday. | ||
| 9. | between | Martha is sitting between George and |
| Jim. | ||
| among | The letter is somewhere among these | |
| papers. | ||
| 10. | inside | These plants should be kept inside |
| the house. | ||
| outside | The chairs were left outside the | |
| house all night. | ||
| 11. | after | Put a question mark after each |
| question. | ||
| before | In giving dates, we usually place the | |
| month before the day. | ||
| 12. | above | This city is three thousand feet |
| above sea level. | ||
| below | This land is below sea level. | |
| Your grade is below averagae. | ||
| 13. | at the top of | Your name is at the top of the waiting list. |
| at the bottom of | His mane is at the bottom of the list. | |
| at the head of | He is now at the head of his class. |
Compare in--on, on--at, at--in in the situations described below:
The prepositions listed in this section are those usually thought of as indicating direction. However, there is some overlapping of place and direction in such prepositions as from, to, through, up, down, over, under, etc.
| | | into | | |
| The dog ran | | out of | | the building. |
| | | toward | | |
| 1. | into | I walked into the room and sat down by the fireplace. |
| 2. | out of | They ran out of the burning building. |
| 3. | toward | He walked toward the City Hall. |
| 4. | by way of | You can go by way of the Panama Canal. |
Into ordinarily refers to motion or action, although in is often used interchangeably with into in situations of this kind.
The following sentence shows some of the relationships of time expressed by various
prepositions:
| | | at | | |
| | | by | | |
| Please arrive | | before | | 10 o'clock. |
| | | after | | |
Below is a list of some prepositions that indicate relationships of time:
| Note: | At 2:30 p.m. = at exactly or precisely 2:30 p.m. |
| By 2 o'clock = not later than 2 o'clock. | |
| The definite article is used as the expression in the morning, (afternoon, evening, but not in at noon, | |
| (night, midnight).(Also see Section 75b.) |
| 1. | at | The baseball game will start at 2:30 p.m. |
| This gate opens at noon and closes at midnignt. | ||
| by | Try to be there by 2 o'clock. | |
| 2. | in | The train will arrive in an hour. |
| I must leave in a few minutes. | ||
| He goes to work early in the morning. | ||
| on | Ray's birthday is on November 18. | |
| 3. | for | They stayed for three weeks. |
| during | We saw them often during the summer. | |
| since | We have been here since 1955. | |
| 4. | after | Call me again after 10 o'clock. |
| before | He always gets home before 6 o'clock | |
| 5. | until | Why don't you stay until (till) Sunday? |
| (till) | I'll be here till (until) 5 o'clock. | |
| 6. | at the beginning of | I'll call you at the beginning of the week. |
| at the end of | You will receive your check at the end of the month. | |
| in the middle of | Let's have lunch sometime in the middle of the week. | |
Compare on--in and for--during--since in the situations described below.
| | | fifteen minutes. |
| | | two hours. |
| We waited for | | several hours. |
| | | a long time. |
During also refers to a period of time, frequently stated as a block of time (during the summer, during the year, during the semester, during my vacation, etc.).
| | | the winter. |
| | | the year. |
| It rained a great deal during | | the spring semester. |
| | | April. |
| | | 1955. |
In many cases for refers to something more or less continuous: during, to something intermittent. For is followed by the indefinite article: during, by the definite article. Compare:
It rained for a day or so.
It rained during the day.
Since refers to a period of time that extends from a point of time in the past to the present or to another point of time in the past. The verb tense is usually the present perfect or past perfect.
| | | five o'clock. |
| I have been here since | | May 10th. |
| | | June, 1952. |
| We have been here since | | noon. |
| Compare: | We haven't seen him for two or three years. |
| We saw him several times during our trip South. | |
| We haven't seen him since 1954. | |
| They have lived in London for two years. | |
| They have met many people during the two years | |
| They have lived in London since 1950. | |
In addition, note the following expressions:
| 1. by | You can go by bus (car, train, ship. plane, foot). |
| 2. on | He went on foot (horseback). |
| I like to travel on train (ship, plane). | |
| 3.in | We came here in a car (taxi). |
| Please write in ink (pencil). | |
| He speaks in a low voice. | |
| He left in a hurry. | |
| 4. with | I accept your invitation with pleasure. |
| She greeted him with a smile. | |
| The car started with a jerk. | |
| 5. like | He walks like an old man. |
| You speak like an authority on the subject. | |