At, In, On online worksheet - Free Printable

The image you've uploaded is a grammar worksheet from TeachThis titled "Make a Sentence", focusing on the correct use of prepositions of time: IN, ON, AT. The task is to form correct sentences by combining the appropriate preposition (IN, ON, AT) with specific time expressions.

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🔍 Objective:

Use the correct preposition (IN, ON, AT) with each time expression to create grammatically correct sentences.

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📌 Rules for Prepositions of Time:

| Preposition | Used With |
|------------|-----------|
| AT | Specific times (e.g., 5 o'clock), meals (e.g., at lunch), festivals (e.g., at Christmas), or specific moments (e.g., at midnight) |
| ON | Days, dates, specific days of the week, and parts of days (e.g., Monday, January 1st, Sunday morning) |
| IN | Months, years, seasons, parts of the day (e.g., in summer, in 2022, in the afternoon), or longer periods (e.g., in the winter) |

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✔ Step-by-Step Solution

We’ll go through the list of time expressions and match them with the correct preposition.

#### 1. June
- → in June
*(Months → IN)*

#### 2. Christmas
- → at Christmas
*(Festivals/holidays → AT)*

#### 3. the summer
- → in the summer
*(Seasons → IN)*

#### 4. sunshine
- → in sunshine? Wait — this might be a typo.
But "sunshine" is not a time expression. Likely meant to be summer or sunshine as a noun, but not a time.
However, if it's "in the sunshine", that’s about location, not time.
Possibly a mistake. Let's assume it's "in the summer" — already covered.

Wait — let’s look again. The word is "sunshine" — but that doesn't make sense as a time. Maybe it's "the sunshine" — but still not a time expression.

But looking at the grid, the third row has:
- the summer
- sunshine
- Friday

Possibly a typo. “Sunshine” is likely “summer” or “spring”? But we have “the summer” already.

Alternatively, perhaps it's "at sunset" or "in the sun" — but not listed.

Let’s skip for now and continue.

Actually, checking the original: It says "sunshine" — but that’s not a time expression. This may be an error. Perhaps it was meant to be "summer"?

But we already have “the summer”.

Wait — maybe it's "in the sunshine" — but again, not a time.

Alternatively, perhaps it's "on a sunny day" — but not here.

Let’s assume "sunshine" is a typo and should be "summer" — but that’s already present.

Alternatively, maybe it's "at sunset" — but not listed.

Wait — perhaps it's "the evening" — which is listed later.

Looking carefully:

The grid has:

| June | Christmas | the summer | sunshine | Friday |
|------|-----------|------------|----------|--------|
| the afternoon | Saturday night | night | midnight | the evening |
| 9 a.m. | Christmas Day | the winter | autumn | January 1st |
| 5 o'clock | Sunday | the morning | Monday morning | the weekend |
| midday | my birthday | Valentine's Day | July | 2022 |

So “sunshine” appears to be a typo. Most likely, it's meant to be “summer” — but “the summer” is already there.

Alternatively, maybe it's “the sunshine” — but again, not a time.

Perhaps it's “in the sunshine” — but not a time expression.

Given that, let's assume it's a typo and ignore it or consider it as "summer".

But wait — actually, “sunshine” might be a distractor. Let’s focus on the rest.

Let’s go through all valid time expressions.

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✔ Correct Pairings:

We'll match each time expression with the correct preposition.

#### First Row:
1. June → in June
*(Month → IN)*
2. Christmas → at Christmas
*(Festival → AT)*
3. the summer → in the summer
*(Season → IN)*
4. sunshine → ✘ Not a time expression. Likely a typo. Skip or assume it's "summer" → already done.
5. Friday → on Friday
*(Day of the week → ON)*

#### Second Row:
6. the afternoon → in the afternoon
*(Part of the day → IN)*
7. Saturday night → on Saturday night
*(Specific night → ON)*
8. night → at night
*(General time → AT)*
9. midnight → at midnight
*(Specific time → AT)*
10. the evening → in the evening
*(Part of the day → IN)*

#### Third Row:
11. 9 a.m. → at 9 a.m.
*(Specific time → AT)*
12. Christmas Day → on Christmas Day
*(Specific date → ON)*
13. the winter → in the winter
*(Season → IN)*
14. autumn → in autumn
*(Season → IN)*
15. January 1st → on January 1st
*(Date → ON)*

#### Fourth Row:
16. 5 o'clock → at 5 o'clock
*(Specific time → AT)*
17. Sunday → on Sunday
*(Day → ON)*
18. the morning → in the morning
*(Part of the day → IN)*
19. Monday morning → on Monday morning
*(Specific part of day → ON)*
20. the weekend → at the weekend (British English) or on the weekend (American English)
→ Usually at the weekend (UK) / on the weekend (US)
But both are acceptable. Here, at the weekend is more common in British English, which is often used in teaching materials.

So: at the weekend or on the weekend

#### Fifth Row:
21. midday → at midday
*(Specific time → AT)*
22. my birthday → on my birthday
*(Specific date → ON)*
23. Valentine's Day → on Valentine's Day
*(Holiday/date → ON)*
24. July → in July
*(Month → IN)*
25. 2022 → in 2022
*(Year → IN)*

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✔ Final Answers:

Now, we can fill in the correct prepositions:

| Time Expression | Correct Preposition | Sentence Example |
|-----------------------|---------------------|----------------------------------|
| June | in | in June |
| Christmas | at | at Christmas |
| the summer | in | in the summer |
| sunshine | ✘ (invalid) | – |
| Friday | on | on Friday |
| the afternoon | in | in the afternoon |
| Saturday night | on | on Saturday night |
| night | at | at night |
| midnight | at | at midnight |
| the evening | in | in the evening |
| 9 a.m. | at | at 9 a.m. |
| Christmas Day | on | on Christmas Day |
| the winter | in | in the winter |
| autumn | in | in autumn |
| January 1st | on | on January 1st |
| 5 o'clock | at | at 5 o'clock |
| Sunday | on | on Sunday |
| the morning | in | in the morning |
| Monday morning | on | on Monday morning |
| the weekend | at or on | at the weekend / on the weekend |
| midday | at | at midday |
| my birthday | on | on my birthday |
| Valentine's Day | on | on Valentine's Day |
| July | in | in July |
| 2022 | in | in 2022 |

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🧠 Summary of Patterns:

| Preposition | Examples |
|------------|---------|
| AT | at 5 o'clock, at midnight, at night, at Christmas, at midday, at the weekend |
| ON | on Friday, on January 1st, on Christmas Day, on my birthday, on Sunday, on Monday morning, on the weekend |
| IN | in June, in 2022, in the summer, in the winter, in the morning, in the afternoon, in the evening, in autumn |

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🚫 Note:

- "sunshine" is not a time expression. It’s likely a typo. If it were "summer", it would be in the summer.
- "the weekend" can take at (UK) or on (US). Both are acceptable depending on dialect.

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✔ How to Use This Worksheet:

Students should pick one time expression and match it with the correct preposition from the top grid (IN/ON/AT) to form a sentence like:

> "I will visit you on Friday."

Or:

> "We go to the beach in the summer."

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📝 Conclusion:

This exercise helps students understand when to use IN, ON, AT with different time expressions. The key is recognizing whether the time is:
- A specific point → AT
- A specific day/date → ON
- A longer period → IN

Let me know if you'd like a printable version or flashcards!