Time-related expressions can be confusing, especially when similar phrases sound natural in conversation. One common question is whether you should say time has flew by or time has flown by. Although both may sound familiar, only one is grammatically correct in standard English. This guide explains the difference, proper grammar, examples, and practical tips to help you use the correct phrase with confidence.
Comparison Overview
The phrases “time has flew by” and “time has flown by” both attempt to describe the feeling that time passed very quickly. However, they differ in grammatical correctness.
| Feature | Time Has Flew By | Time Has Flown By |
| Grammar | ❌ Incorrect | ✅ Correct |
| Verb Form | Simple past (“flew”) | Past participle (“flown”) |
| Used with “has” | No | Yes |
| Standard English | No | Yes |
| Common in speech | Occasionally (mistake) | Very common |
The key difference lies in the verb form used after the helping verb has.
Definition of Time Has Flew By
“Time has flew by” is an incorrect grammatical expression in standard English.
The verb flew is the simple past tense of fly. It cannot be used after helping verbs such as has, have, or had.
Incorrect Example:
- ❌ Time has flown by since graduation.
Although some native speakers say it by accident, it is considered a grammatical mistake.
Definition of Time Has Flown By
“Time has flown by” is the correct English expression.
Here, flown is the past participle of the verb fly, which is required after has, have, or had in the present perfect tense.
It means that time has passed very quickly.
Examples:
- Time has flown by this year.
- I can’t believe how fast time has flown by.
- The holidays have flown by.
Main Differences Between Time Has Flew By Or Time Has Flown By
| Aspect | Time Has Flew By | Time Has Flown By |
| Correct Grammar | ❌ No | ✅ Yes |
| Verb Form | Simple past | Past participle |
| Present Perfect | Incorrect | Correct |
| Used in Formal Writing | Never | Always |
| Accepted in Exams | No | Yes |
| Recommended Usage | Avoid | Use |
The Verb Forms of “Fly”
| Base Verb | Simple Past | Past Participle |
| Fly | Flew | Flown |
Examples:
- I fly every month.
- I flew to London yesterday.
- I have flown to London many times.
Why This Mistake Happens
Many learners confuse “flew” and “flown” because both are forms of the same verb.
Remember this pattern:
- Yesterday → flew
- Has/Have/Had → flown
Simple shortcut:
- ❌ has flew
- ✅ has flown
Comparison Table
| Sentence | Correct? |
| Time has flown by. | ❌ |
| Time has flown by. | ✅ |
| Time flew by yesterday. | ✅ |
| Time had flown by before we noticed. | ✅ |
| Time has flown by. | ❌ |
Grammar Guide
The expression uses the verb fly metaphorically to describe time passing quickly.
| Verb Form | Example |
| Base | fly |
| Present | flies |
| Past | flew |
| Past Participle | flown |
| Present Participle | flying |
The phrase has flown by is in the Present Perfect Tense.
Structure:
Subject + has/have + past participle + by
Example:
She has flown home.
Likewise:
Time has flown by.
How Each Term Is Used in Sentences
Time Has Flew By
This form should not be used.
Incorrect:
- ❌ Time has flown by quickly.
- ❌ Summer has flown by.
Time Has Flown By
Correct sentence patterns:
- Time has flown by.
- The years have flown by.
- Life has flown by so fast.
- The weekend has flown by.
- Our vacation has flown by.
Common Mistakes Learners Make
Mistake 1
❌ Time has flew by.
✅ Time has flown by.
Mistake 2
Using flew after have.
❌ We have flew home.
✅ We have flown home.
Mistake 3
Thinking every past verb works after “has.”
Only the past participle is used after helping verbs.
Simple Rules to Remember
- After has, use the past participle.
- Fly → Flew → Flown
- Never write has flew.
- Think:
- Yesterday = flew
- Has/Have/Had = flown
Memory trick:
Helping verbs love past participles.
Quick Tips for Writing and Speaking
- Check whether the sentence contains has, have, or had.
- If yes, use flown.
- Read the sentence aloud.
- Memorize irregular verbs.
- Proofread before submitting assignments.
When to Use Each One
Use “Time Has Flown By”
Use it when talking about experiences from the past to the present.
Examples:
- Time has flown by this semester.
- Our friendship has flown by so quickly.
- The last ten years have flown by.
- Childhood has flown by.
- The afternoon has flown by.
Use “Time Flew By”
Notice this is different.
Without has, flew is correct.
Example:
- Time flew by during the movie.
When NOT to Use Each One
Avoid:
- ❌ Time has flew by.
- ❌ The week has flown by.
- ❌ Life has flown by.
Instead use:
- ✅ Time has flown by.
- ✅ The week has flown by.
- ✅ Life has flown by.
Which One to Use (Decision Guide)
Ask yourself these questions:
Does the sentence contain has, have, or had?
- Yes → Use flown.
- No → Continue.
Are you describing something in the simple past?
- Yes → Use flew.
Examples:
- Yesterday, time flew by.
- Time has flown by since then.
Quick decision table:
| Situation | Correct Form |
| Present Perfect | Has flown |
| Past Simple | Flew |
| Formal Writing | Has flown |
| School Exams | Has flown |
| Everyday English | Has flown |
Real-World Practical Examples
Time Has Flew By Examples
These examples illustrate the common mistake.
- ❌ Time has flown by during the school year.
- ❌ Time has flown by while working remotely.
- ❌ Time has flown by since our wedding.
- ❌ Time has flown by in this project.
- ❌ Time has flown by during the holidays.
Time Has Flown By Examples
- Education: Time has flown by since I started college.
- Daily Life: Time has flown by while raising our children.
- Business: Time has flown by during this successful project.
- Technology: Time has flown by as smartphones evolved.
- Conversation: Wow, time has flown by since we last met.
Additional examples:
- Science: Time has flown by during the research project.
- Writing: Time has flown by while finishing this novel.
- Sports: Time has flown by during the championship season.
- Travel: Time has flown by on our vacation.
- Family: Time has flown by since the baby was born.
Self-Assessment (Fill in the Blanks)
- I will use ______ when referring to the present perfect tense. The correct word is ______ because it follows has.
- I will use ______ when talking about yesterday. The correct word is ______ because it is simple past.
- Time has ______ by so quickly. The correct word is ______ because has needs a past participle.
- Yesterday, time ______ by. The correct word is ______ because no helping verb is used.
- Our vacation has ______ by. The correct word is ______ because the sentence is in the present perfect.
- Last weekend, time ______ by during the concert. The correct word is ______ because it refers to a completed past event.
- The years have ______ by since graduation. The correct word is ______ because have requires a past participle.
- Time has ______ by while we worked on the project. The correct word is ______ because of the helping verb.
- During the meeting yesterday, time ______ by. The correct word is ______ because it is simple past.
- My childhood has ______ by so quickly. The correct word is ______ because it follows has.
- I accidentally wrote “has ______ by,” but the form should be the past participle. The correct word is ______ because flew is incorrect after has.
- We ______ to New York last year. The correct word is ______ because it is the simple past of fly.
- We have ______ to New York many times. The correct word is ______ because it is the past participle.
- Time had ______ by before we noticed. The correct word is ______ because had takes a past participle.
- The afternoon ______ by while we were talking. The correct word is ______ because it describes a past event.
- Time has ______ by since the company started. The correct word is ______ because it is present perfect.
- The months have ______ by. The correct word is ______ because it follows have.
- Yesterday, the hours ______ by quickly. The correct word is ______ because it is simple past.
- Never write “has ______ by.” The correct word is ______ because that form is grammatically incorrect.
- The correct phrase is “time has ______ by.” The correct word is ______ because only the past participle fits after has.
Answers
- flown, flown
- flew, flew
- flown, flown
- flew, flew
- flown, flown
- flew, flew
- flown, flown
- flown, flown
- flew, flew
- flown, flown
- flew, flown
- flew, flew
- flown, flown
- flown, flown
- flew, flew
- flown, flown
- flown, flown
- flew, flew
- flew, flew
- flown, flown
Final Verdict
Between time has flew by ” and ” time has flown by only “time has flown by” is grammatically correct. The confusion comes from mixing up the simple past form flew with the past participle flown. Remember that helping verbs like has, have, and had must always be followed by the past participle, making has flown the correct choice. Use flew only in the simple past without a helping verb, such as “Time flew by yesterday.” By understanding this simple grammar rule and practicing the examples in this guide, you’ll avoid a common mistake and use these expressions naturally in speaking, writing, exams, and everyday conversations.
Conclusion
Understanding the difference between Time Has Flew By and Time Has Flown By is easier once you know how the verb fly changes in different tenses. While “time flew by” is correct in the simple past, “time has flown by” is the only correct form in the present perfect tense. The phrase “time has flew by” is a common grammar mistake because flew is the past tense, not the past participle.
By remembering the verb pattern fly, flew, flown, you can confidently choose the right expression in everyday conversations, professional writing, school assignments, and exams. Whether you’re writing an email, telling a story, or improving your English grammar, using “time has flown by” will help your communication sound natural and accurate. With regular practice and the simple rules covered in this guide, you’ll avoid this common mistake and use these expressions correctly every time.
FAQs
Is “time has flew by” grammatically correct?
No, “time has flew by” is not grammatically correct. The helping verb has must always be followed by the past participle of the main verb. Since the past participle of fly is flown, the correct expression is “time has flown by.”
Why is “time has flown by” correct?
The phrase is correct because it uses the present perfect tense, which follows the structure has + past participle. The past participle of fly is flown, making “time has flown by” the proper grammatical form.
What is the difference between “flew” and “flown”?
Flew is the simple past tense of fly, while flown is the past participle. Use flew without a helping verb, such as “The bird flew away.” Use flown after has, have, or had, such as “The bird has flown away.”
Can I say “time flew by” instead?
Yes. “Time flew by” is completely correct when talking about a finished event in the past. For example, “Time flew by during the vacation.“ It simply uses the simple past tense instead of the present perfect.
Why do people say “time has flown by”?
Many learners accidentally confuse the past tense flew with the past participle flown because both come from the same verb. Although you may hear this mistake in casual speech, it is not considered correct in standard English.
Is “time has flown by” suitable for formal writing?
Yes. “Time has flown by” is appropriate for formal writing, academic work, business communication, and everyday conversations. It is widely accepted in standard English and sounds natural in both spoken and written contexts.
How can I remember when to use “flown”?
A simple trick is to remember that has, have, and had always need a past participle. Since the verb forms are fly, flew, flown, you should automatically choose flown whenever a helping verb comes before it.
Can the phrase be used in everyday conversations?
Absolutely. “Time has flown by” is one of the most common ways to express that time passed very quickly. People often use it when talking about holidays, childhood, friendships, work projects, or memorable life events.
Are there other expressions similar to “time has flown by”?
Yes. Similar expressions include “time passed quickly,” “the days went by fast,” “before I knew it,” and “the months slipped away.” Each conveys the idea that time seemed to move faster than expected.
What is the easiest rule to avoid this grammar mistake?
Remember the three forms of the verb: fly, flew, flown. If your sentence contains has, have, or had, always use flown. If there is no helping verb and you are talking about the past, use flew instead.
