Prepositions of time in Thai Grammar

Prepositions of time are a fundamental aspect of English grammar. They help us to describe when something happens, providing clarity and precision in our communication. Understanding how to use prepositions of time correctly is essential for both native speakers and language learners. In this article, we will delve into the most common prepositions of time, exploring their uses, meanings, and nuances. By the end of this comprehensive guide, you’ll have a solid grasp of how to use these prepositions effectively in your everyday conversations and writing.

Common Prepositions of Time

There are several prepositions of time that are commonly used in English. These include at, in, on, by, before, after, during, fromto, and until. Each of these prepositions has its specific contexts and rules for usage, which we will explore in detail.

At

The preposition at is used to indicate a specific point in time. It is often used with precise times of the day, holidays, and specific moments. For example:

– We will meet at 3 PM.
– The store opens at 9 AM.
– Let’s have dinner at sunset.
– I received a gift at Christmas.

In these examples, at specifies an exact time or moment when something occurs.

In

The preposition in is used to refer to longer periods of time, such as months, years, centuries, seasons, and parts of the day. For example:

– She was born in July.
– The company was founded in 1990.
– We are living in the 21st century.
– The flowers bloom in spring.
– He likes to read in the morning.

In these examples, in indicates a general time frame rather than a specific point.

On

The preposition on is used with days and dates. It is also used for specific days of the week and special days. For example:

– I will see you on Monday.
– Her birthday is on the 15th of March.
– We will celebrate on New Year’s Day.
– The meeting is scheduled on Friday.

In these examples, on specifies a particular day or date when something happens.

By

The preposition by is used to indicate a deadline or the latest time by which something must be done. It can also mean “no later than.” For example:

– Please submit your report by Friday.
– She promised to return the book by next week.
– We need to finish the project by the end of the month.

In these examples, by sets a specific time limit within which an action needs to be completed.

Before

The preposition before is used to indicate a time earlier than a specific point. It is often used to describe actions that happen prior to a particular event or time. For example:

– We need to finish this before noon.
– She always exercises before breakfast.
– Let’s meet before the movie starts.

In these examples, before indicates that one action occurs earlier than another.

After

The preposition after is used to indicate a time later than a specific point. It describes actions that happen following a particular event or time. For example:

– We will have lunch after the meeting.
– He usually goes for a walk after dinner.
– She felt better after taking the medicine.

In these examples, after indicates that one action occurs later than another.

During

The preposition during is used to describe an action that happens within a specific period of time. It often refers to events or activities that take place over a span of time. For example:

– We stayed indoors during the storm.
– She fell asleep during the movie.
– They traveled during the summer holidays.

In these examples, during specifies a time frame within which an action occurs.

From…To

The prepositions from and to are used together to indicate the start and end of a time period. They help to describe the duration of an event or activity. For example:

– The conference will be held from Monday to Wednesday.
– The store is open from 9 AM to 5 PM.
– She studied from January to June.

In these examples, from and to specify the beginning and ending points of a time period.

Until

The preposition until is used to indicate a continuous action or state that persists up to a specific point in time. It often implies that something will stop happening at that point. For example:

– We will wait until you arrive.
– The store is open until 8 PM.
– She worked on the project until midnight.

In these examples, until specifies the time up to which an action continues.

Using Prepositions of Time in Sentences

Understanding how to use prepositions of time is crucial for constructing clear and accurate sentences. Let’s look at some examples to illustrate their proper usage.

At

– I will meet you at 7 PM.
– The concert starts at midnight.
– He arrived at the right moment.

In

– She was born in December.
– They moved to the new house in 2015.
– We will take a vacation in the summer.

On

– The appointment is on Tuesday.
– We will have a party on the 4th of July.
– He called me on my birthday.

By

– Please finish the assignment by tomorrow.
– The package should arrive by next week.
– We need to leave by 6 PM.

Before

– She always meditates before breakfast.
– We need to complete the project before the deadline.
– He called me before the meeting.

After

– We will go for a walk after dinner.
– She felt tired after the workout.
– They celebrated after the victory.

During

– He stayed awake during the entire movie.
– We took notes during the lecture.
– She was very attentive during the meeting.

From…To

– The exhibition is open from 10 AM to 6 PM.
– He worked from Monday to Friday.
– The store is closed from Christmas to New Year.

Until

– We will wait here until you return.
– The shop is open until 9 PM.
– She studied until late at night.

Common Mistakes and Tips

Even advanced language learners can make mistakes when using prepositions of time. Here are some common mistakes and tips to help you avoid them:

Confusing “in” and “on”

– Incorrect: I will see you in Monday.
– Correct: I will see you on Monday.

Tip: Use on for specific days and dates. Use in for months, years, and longer periods.

Misusing “by” and “until”

– Incorrect: Please finish this until Friday.
– Correct: Please finish this by Friday.

Tip: Use by to set a deadline. Use until to indicate a continuous action that stops at a specific time.

Overusing “at” for broader time frames

– Incorrect: We will go on vacation at summer.
– Correct: We will go on vacation in summer.

Tip: Use at for specific times. Use in for months, seasons, years, and parts of the day.

Forgetting to use “from” and “to” together

– Incorrect: The event is from 3 PM.
– Correct: The event is from 3 PM to 5 PM.

Tip: Always pair from with to to indicate the start and end of a time period.

Practice Exercises

To reinforce your understanding of prepositions of time, try these practice exercises. Fill in the blanks with the appropriate prepositions of time.

1. The train arrives ___ 8 AM.
2. We will visit you ___ December.
3. She has a meeting ___ Monday.
4. The project must be completed ___ Friday.
5. He always takes a nap ___ lunch.
6. We stayed indoors ___ the storm.
7. The store is open ___ 9 AM ___ 6 PM.
8. They played outside ___ it got dark.

Answers:

1. at
2. in
3. on
4. by
5. after
6. during
7. from, to
8. until

Conclusion

Prepositions of time are essential for communicating when events occur. By mastering their usage, you can express yourself more clearly and accurately in English. Remember to pay attention to the specific contexts in which each preposition is used, and practice regularly to reinforce your understanding. With time and effort, you will become proficient in using prepositions of time, enhancing your overall language skills.

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