Prepositions of Time IN, ON and AT- English Grammar

Prepositions of Time IN, ON and AT- English Grammar

In this grammar lesson tutorial for beginners’ learners would be able to Learn English Fast when to use Prepositions of Time IN ON and AT correct grammar and exercises. They would be able to define “Preposition” and tell the difference between each prepositions of time “in”, “on”, and “at” respectively. A preposition of time indicates when something happens. So, let’s get started.

Watch the video of Preposition of time in, an and at here and proceed to exercises.

What is a Preposition?

A preposition is a small word before a noun or a pronoun.

Examples:           in                after

                             on               to

                             at                with                     

 I am going to Thailand in March.

The prepositions show the relationship between a noun or pronoun and the other words in a sentence.

In this Grammar Lesson you will learn how to use the following prepositions of time – “In, On and At”

Preposition In

1. in + month

January, February, March, April, May, June

July, August, September, October, November, December

My parents spend vacation to Indonesia in November.

My birthday is in May.

2. in + season

Spring, summer, autumn and winter       


Paul often goes skiing in the winter.

I love going to the beach in the summer.

3. in + year

   She graduated in 2012.

   Sam Was born in 1997.

4. in + part of the day

        in the monring

in the afternoon

in the evening

   We go to school in the morning.

   My friends play football in the afternoon.

Preposition On:

1. On + day of the week

Sunday    Monday   Tuesday  Wednesday     Thursday

Friday      Saturday

If the event is a unique (one- time) event, the day of the week is singular:

I have an appointment with my doctor on Saturday. (only next Saturday)

The post office is closed on Tuesday. (only next Tuesday)

If the event is a regular event, the day of the week is plural:


I have an appointment with my doctor on Saturdays. (every Saturday)

The post office is closed on Tuesdays. (every Tuesday)

2. on + date

We use the preposition “on” before a specific date.

She graduated on August 30, 2012.

He was born on the 1st February.

  Our final exam is on June 28th.

3. on + special day

I had a party on my graduation day.

I visited my grandparents on New Year’s Day.

What are you doing on Thanksgiving Day?

 The Preposition at:

1. at + specific time on the clock

 Our English class starts at 8 o’clock

The bank closes at 3:30 pm

The bus leaves at 7:30 in the morning.

2. at + festival / special time of the year

I visited Thailand at Songkran.

I’m going to see my best friend at Christmas.

But if we refer to a single specific day during a festival, we use “on”.

I went to church on Christmas Day.

I ate a lot of beef steak on Easter Sunday.

3. at – others

                at the weekend”

She is going to play tennis at the weekend.

                “at the beginning of”

At the beginning of the conference, we talked about salary increase.

                “at the end of”

At the end of the show, we went out for lunch.

4. at night / in the night

.               “at night”

‘at night” refers to any night in general.

I enjoy walking in London street at night.

                “in the night

I woke up in the night.

She heard a loud cry in the night.

Practice At, In, On Preposition Exercises 1

Complete the following sentences using preposition of time:

in, on and at.

1. The school reopens_____ Monday.

2. I invite my friends to dinner _____ Christmas eve.

3.  They are getting married _____ the tenth of August.

4.They are getting married _____ the spring.

5.  It usually rains _____ the month of July.

6. My birthday is _____ May.

7. We go on a vacation _____ the summer.

8.I want to be a teacher _____ some point.

Practice At, In, On Preposition Exercises 2

Fill in the correct prepositions of time– in, on or at.

1. I work _____ Saturdays too.

2. We have a meeting _____ 10 am.

3.It often snows _____ January.

4. I have an exam _____ Wednesday.

5. I am washing my car _____ the moment.

6. What are you doing _____ 20 May?

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