On Friday or In Friday? Correct Prepositions Explained

“Learn when to use ‘on’ and ‘in’ with days like Friday to perfect your time expressions effortlessly.”

Understanding the correct use of prepositions can significantly improve your English fluency. The prepositions “on” and “in” often cause confusion, especially in time expressions like “on Friday” or “in Friday.” Knowing how to choose the right one is essential for clear and accurate communication.

When it comes to speaking or writing, using the right preposition ensures your message is professional and well-understood. By focusing on correct usage, you’ll not only avoid mistakes but also enhance your language skills to express yourself better.

This guide simplifies the rules of “on” and “in” with Fridays and other days. Through examples, explanations, and practical tips, you’ll master this concept and apply it confidently in daily conversations and writing.

Overview

“On Friday” and “in Friday” serve different purposes and meanings, but only one is grammatically correct in most contexts. This article will break down the usage rules, common patterns, and provide relatable examples. By the end, you’ll understand why “on” is the right choice and how “in” fits into other expressions.

Understanding Prepositions in Time Expressions

Prepositions play a vital role in time expressions, connecting words to clarify when an event occurs. Choosing the right preposition depends on the specific time-related detail being described.

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Examples of Common Usage

Here are five examples showcasing the correct and practical use of “on” and “in” with Friday and other time expressions:

On Friday
- “We’re hosting a workshop on Friday morning.”
- “The package will arrive on Friday before lunch.”
In Friday’s Context
- “The announcement was made in Friday’s meeting.”
- “All updates were discussed in Friday’s briefing.”
On a Specific Date
- “The project was completed on Friday, September 15th.”
In a Time Frame
- “We reviewed the document in Friday’s final session.”
Comparing Correct and Incorrect Usage
- Correct: “The celebration is on Friday night.”
  Incorrect: “The celebration is in Friday night.”

Practical Scenarios

Here are some practical scenarios to demonstrate the correct usage of “on” and “in” with Friday and similar contexts:

1. Scheduling an Event

Scenario: Maria is organizing a team meeting.
- Correct: “The meeting is scheduled on Friday at 2 PM.”
  (This specifies the exact day of the meeting.)
- Incorrect: “The meeting is scheduled in Friday at 2 PM.”

2. Referring to a Document

Scenario: John is reviewing updates in a report.
- Correct: “The updates are outlined in Friday’s report.”
  (Here, “in” indicates that the updates are part of the report.)
- Incorrect: “The updates are outlined on Friday’s report.”

3. Making Travel Plans

Scenario: Sarah is planning her trip.
- Correct: “She will leave on Friday and return on Sunday.”
  (This shows the exact days of travel.)
- Incorrect: “She will leave in Friday and return in Sunday.”

4. Discussing Weekly Tasks

Scenario: A teacher discusses a student’s performance.
- Correct: “We evaluated her progress in Friday’s class.”
  (Here, “in” is used to mean something happening within the session.)
- Incorrect: “We evaluated her progress on Friday’s class.”

5. Highlighting an Occasion

Scenario: Mark talks about a special day.
- Correct: “We celebrated her promotion on Friday last week.”
  (This indicates a specific day of celebration.)
- Incorrect: “We celebrated her promotion in Friday last week.”

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The Preposition “On”

Usage

“On” is used for specific days or dates. It pinpoints a particular point in time, often marking an event.

Rules and Patterns

Use “on” with days of the week:
Example: “I have a doctor’s appointment on Monday.”
Combine “on” with exact dates:
Example: “The event is on March 5th.”

Examples

“We’ll have lunch on Friday afternoon.”
“She completed the project on her birthday.”
“They met on a sunny Friday last month.”

The Preposition “In”

Usage

“In” is used for general time periods, like months, years, or parts of the day. It is not typically used with days unless part of a longer phrase.

Rules and Patterns

Use “in” for larger time frames:
Example: “The concert is in July.”
Include “in” for phrases:
Example: “She will discuss it in Friday’s meeting.”

Examples

“He traveled in December to visit his family.”
“In the 1990s, technology advanced rapidly.”
“We worked together in Friday’s training session.”

Common Mistakes and Misconceptions

Incorrect Usage

Many learners mistakenly use “in” with days of the week.

Incorrect: “She will arrive in Friday.”
Correct: “She will arrive on Friday.”

Explanation

The preposition “on” connects the event to a specific day. “In” is broader, fitting periods like months or years.

Practical Tips for Correct Usage

Mastering the use of “on” and “in” with days like Friday is easier when you follow these practical tips:

Understand the function: Use “on” to refer to specific days (e.g., “on Friday”) and “in” for broader time periods or within specific contexts (e.g., “in Friday’s meeting”).
Visualize time frames: Think of “on” as pinpointing a precise date or day, while “in” encapsulates broader durations or something happening inside a particular event.
Practice regularly: Create sentences using both prepositions in different contexts. For example, “I’ll see you on Friday” and “We’ll discuss it in Friday’s session.”
Remember simple rules: “On” is always paired with days of the week and exact dates, while “in” fits parts of the day, months, or years.
Read and observe: Pay attention to how prepositions are used in books, articles, and conversations. This will reinforce your understanding of correct patterns.

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Practice Sentences

Here are some practice sentences to help you understand and apply the correct usage of “on” and “in” with days like Friday:

Using “on”:
- “We’re having a team meeting on Friday at 10 AM.”
- “The delivery will arrive on Friday before noon.”
- “She was born on a Friday in June.”
Using “in”:
- “The key discussion happened in Friday’s session.”
- “We completed the project in Friday’s workshop.”
- “The details are outlined in Friday’s report.”
Comparing Correct and Incorrect Usage:
- Correct: “The event is scheduled on Friday evening.”
  Incorrect: “The event is scheduled in Friday evening.”
- Correct: “We discussed it in Friday’s newsletter.”
  Incorrect: “We discussed it on Friday’s newsletter.”
- Correct: “Let’s meet on Friday to finalize the plan.”
  Incorrect: “Let’s meet in Friday to finalize the plan.”

Key Insight

1. Is “on Friday” always correct?
Yes, when referring to a specific day, “on Friday” is correct.

2. Can “in Friday” ever be used?
“In Friday” works only in phrases like “in Friday’s schedule,” where “in” relates to something happening during that day.

3. Why is “on Friday” more common?
The preposition “on” directly connects events to specific days, making it the standard choice.

4. Are there exceptions to these rules?
Not generally, but idiomatic expressions or poetic contexts might differ.

5. How can I avoid mistakes with prepositions?
Practice daily, pay attention to context, and read examples in reliable sources to reinforce correct usage.

Wrap Up

Prepositions like “on” and “in” are small but significant words in English. For days like “Friday,” “on” is the correct choice to mark specific events or dates. By contrast, “in” works best for broader timeframes or specific phrases. Understanding these distinctions will enhance your fluency and accuracy, helping you communicate more effectively in both casual and professional settings. Keep practicing with real-life scenarios, and soon, using the correct prepositions will become second nature. Happy learning!