A2 Verb System 4 min read Easy

The 4 Key Verb Prefixes (mi, be, na, nemi)

Master these four prefixes to control the timing, mood, and negativity of every Persian verb you speak.
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Grammar Rule in 30 Seconds

Master Persian verbs by adding these four simple prefixes to the front of your verb stem.

  • Use 'می' (mi-) for present continuous or habitual actions: می‌روم (I go).
  • Use 'ب' (be-) for imperatives or subjunctive moods: برو (Go!).
  • Use 'ن' (na-) or 'نمی' (nemi-) to make any verb negative: نمی‌روم (I do not go).
Prefix + Verb Stem + Ending = Conjugated Verb

Overview

Think of Persian verb prefixes as the 'vibe check' of your sentence. Have you ever wondered why a simple verb like رفت (went) suddenly sprouts a می or a ب at the start? These tiny prefixes are the four keys to the entire Persian verb system. They don't just add flavor; they change the whole meaning. Without them, you're stuck in the past or sounding like a robot. They handle your daily routines, your 'should I' questions, and your 'hard no' moments. It's like adding emojis to a text message. One prefix says 'I'm doing this right now,' and another says 'I might do this.' They are the difference between 'I eat' and 'Let's eat!'

How This Grammar Works

Persian verbs are like LEGO sets. You have the base (the root), but the prefix is the specialized piece that defines the model. These four prefixes—می, ب, ن, and نمی—attach to the front of the verb. They are the first thing your listener hears. They signal the 'mood' and the 'timing' of the action.
  • می (mi) is the workhorse for everything continuous or habitual.
  • ب (be) is the 'potential' prefix for commands and 'maybe' scenarios.
  • ن (na) is your basic 'No' button.
  • نمی (nemi) is the specific 'No' for continuous actions.
It’s like a traffic light for your conversation. Red, green, and yellow, but for verbs.

Formation Pattern

1
Building these is easier than ordering food on an app. Follow these steps:
2
Start with your verb stem (Present or Past).
3
Place the prefix directly before the stem.
4
For می, use a 'half-space' (ZWNJ) so it stays close but doesn't touch: می‌روم.
5
For ب and ن, they usually physically attach: بروم or نرو.
6
Add your personal ending (like -am, -i, -ad) to the end.
7
Here is the basic layout:
8
[Prefix] + [Verb Stem] + [Personal Ending]
9
Example Table:
10
Prefix | Stem | Ending | Full Verb | Meaning
11
--- | --- | --- | --- | ---
12
می | خور | م | می‌خورم | I am eating / I eat
13
ب | خور | م | بخورم | (That) I eat / Should I eat?
14
ن | خور | ی | نخور | Don't eat!
15
نمی | خوان | یم | نمی‌خوانیم | We are not reading

When To Use It

Use می (mi) for your TikTok scrolling habits or your current Netflix binge. It covers the Present Continuous ('I am watching') and the Simple Present ('I watch'). If it's a habit, use می.
Use ب (be) when you are being bossy (Imperative) or unsure (Subjunctive). Use it after verbs like 'want,' 'can,' or 'must.' For example: 'I want to go' becomes می‌خواهم بروم.
Use ن (na) for 'Don't!' commands. Tell your friend نرو (Don't go) when they try to leave the party early. It also negates the past tense: نرفتم (I didn't go).
Use نمی (nemi) when you are NOT doing something habitually. 'I don't smoke' or 'I'm not coming to the Zoom meeting.' It's the 'cancel' button for your daily life.

Common Mistakes

Don't let the 'half-space' trip you up. Writing می روم with a full space looks like you're texting from 1995. Use the ZWNJ character.
Another classic: using ب with the past tense. You can't say برفتم. That's like saying 'I shoulded went.'
Mixing up ن and نمی is the biggest hurdle. Remember: if the positive version has می, the negative version MUST have نمی.
Positive: می‌خرم (I buy).
Negative: نمی‌خرم (I don't buy).
Don't just slap a ن on there and call it a day. Your Persian friends will know you're an AI in disguise.

Contrast With Similar Patterns

Let's compare می‌روم vs بروم.
می‌روم is a fact. 'I am going to the gym.'
بروم is a possibility or a request. 'Should I go to the gym?'
Think of می as the 'Present Reality' and ب as the 'Present Wish.'
Now look at نخور vs نمی‌خورم.
نخور is a direct order: 'Don't eat that sketchy street food!'
نمی‌خورم is a statement: 'I don't eat meat.'
One is a command, the other is a life choice. Choose wisely, or you'll end up being very rude at a dinner party!

Quick FAQ

Q

Does ب always mean 'should'?

Not always, but it often translates that way in questions. In statements, it's just the 'subjunctive' vibe.

Q

Can I use می for the future?

Yes! Persian speakers often use the present continuous for near-future plans. 'I'm going tomorrow' is just فردا می‌روم.

Q

Is نمی used for the past?

Only for the 'Past Continuous' (I was going). For simple past (I didn't go), just use ن.

Q

Why does ب sometimes sound like بی?

If the verb starts with an 'o' sound, like برو (go), the ب stays 'be'. But it's mostly about flow. Just stick to 'be' for now.

Present Tense Conjugation

Pronoun Prefix Stem Ending
من
می
رو
م
تو
می
رو
ی
او
می
رو
د
ما
می
رو
یم
شما
می
رو
ید
آنها
می
رو
ند

Common Contractions

Full Colloquial
نمی‌دانم
نمیدونم
نمی‌خواهم
نمیخوام

Meanings

Persian verb prefixes are small particles attached to the beginning of a verb stem to indicate tense, mood, or negation.

1

Habitual/Continuous

Indicates an action that happens regularly or is currently happening.

“او می‌خندد”

“ما می‌دویم”

2

Imperative/Subjunctive

Used for commands or expressing desire/possibility.

“بگو”

“بخور”

3

Negation

Turns an affirmative verb into a negative one.

“نمی‌روم”

“نخور”

Reference Table

Reference table for The 4 Key Verb Prefixes (mi, be, na, nemi)
Prefix Mood/Tense Example Translation
می (mi-)
Present Continuous
می‌نویسم
I am writing / I write
ب (be-)
Subjunctive
بنویسم
That I write / Should I write?
ب (be-)
Imperative
بنویس
Write!
ن (na-)
Negative Imperative
ننویس
Don't write!
ن (na-)
Simple Past Negative
ننوشتم
I didn't write
نمی (nemi-)
Present Negative
نمی‌نویسم
I am not writing / I don't write
می (mi-)
Past Continuous
می‌نوشتم
I was writing

Formality Spectrum

Formal
من می‌روم

من می‌روم (daily life)

Neutral
می‌روم

می‌روم (daily life)

Informal
میرم

میرم (daily life)

Slang
میرم

میرم (daily life)

The 4 Pillars of Persian Verbs

Prefixes

Reality (می)

  • Habits I eat every day
  • Now I am eating now

Possibility (ب)

  • Commands Eat!
  • Desires I want to eat

Positive vs. Negative Prefixes

Positive
می‌روم I go
برو Go!
Negative
نمی‌روم I don't go
نرو Don't go!

Which Prefix Should I Use?

1

Is it a fact/habit?

YES
Use می (mi)
NO
Go to next step
2

Is it a command or 'maybe'?

YES
Use ب (be)
NO ↓

Prefix Usage Scenarios

☕

Daily Life (می)

  • • Drinking coffee
  • • Working
  • • Sleeping
🙋‍♂️

Social Needs (ب)

  • • Ordering food
  • • Asking for help
  • • Giving advice
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Examples by Level

1

من می‌روم

I am going

2

نمی‌روم

I am not going

3

برو

Go

4

نرو

Don't go

1

او می‌خورد

He is eating

2

بنویس

Write

3

نمی‌خوابم

I am not sleeping

4

نخور

Don't eat

1

می‌توانم بیایم

I can come

2

باید بروم

I must go

3

نمی‌دانم

I don't know

4

نمی‌خواهم

I don't want

1

می‌گویند که او می‌آید

They say he is coming

2

بگذار بروم

Let me go

3

نمی‌توانستند ببینند

They couldn't see

4

نمی‌بایست انجام دهی

You shouldn't have done it

1

می‌بایست به او می‌گفتم

I should have told him

2

بمان تا ببینیم

Stay so we can see

3

نمی‌توان نادیده گرفت

It cannot be ignored

4

نمی‌باید چنین کرد

One should not do this

1

می‌بایست که می‌آمد

He ought to have come

2

بگویید تا بیایند

Tell them to come

3

نمی‌توانست که نیاید

He couldn't not come

4

نمی‌باید که می‌رفت

He shouldn't have gone

Easily Confused

The 4 Key Verb Prefixes (mi, be, na, nemi) vs می vs. Past Tense

Learners think 'می' is for all tenses.

The 4 Key Verb Prefixes (mi, be, na, nemi) vs ب vs. Simple Past

Learners add 'ب' to past verbs.

The 4 Key Verb Prefixes (mi, be, na, nemi) vs ن vs. نمی

Using 'نمی' for commands.

Common Mistakes

✗

می‌برو

✓

می‌روم

Missing the personal ending.
✗

ب‌می‌روم

✓

می‌روم

Double prefixing.
✗

نمی‌برو

✓

نمی‌روم

Missing ending.
✗

ب‌رو

✓

برو

Incorrect spelling.
✗

ن‌می‌روم

✓

نمی‌روم

Incorrect negation prefix.
✗

ب‌نرو

✓

نرو

Negating a command keeps the 'ب'.
✗

می‌نرو

✓

نمی‌روم

Wrong prefix order.
✗

نمی‌باید

✓

نمی‌باید

Correct usage but often confused with 'نباید'.
✗

می‌باید

✓

باید

Redundant prefix.
✗

ن‌باید

✓

نباید

Incorrect prefix.
✗

می‌بگویید

✓

بگویید

Prefix conflict.
✗

نمی‌بگویید

✓

نگویید

Incorrect negation.
✗

ب‌می‌گویید

✓

می‌گویید

Double prefixing.

Sentence Patterns

من ___ می‌روم.

___ نمی‌خورم.

لطفاً ___.

من نمی‌توانم ___.

Real World Usage

Texting constant

نمیتونم بیام

Ordering food very common

یک چای بده

Job interview common

من می‌خواهم کار کنم

Travel common

می‌روم به هتل

Social media very common

می‌بینمت

Food delivery app common

نمی‌خواهم

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🎯

The 'Want' Rule

Whenever you use 'want' (می‌خواهم), the next verb ALWAYS takes the ب prefix. It's a package deal!
⚠️

The Mi-Space

In digital typing, use Shift+Space for the 'half-space' in می‌شود. It keeps the prefix from looking like a separate word.
💬

Softening Commands

To make a ب command more polite, add 'lotfan' (please) or use the plural form even for one person.

Smart Tips

Check the tense first.

رفتم → می‌روم

Check if it's a command.

نمی‌رو → نرو

Use contractions.

نمی‌دانم → نمیدونم

Use full forms.

نمیدونم → نمی‌دانم

Pronunciation

mi-ro-vam

Prefix attachment

The prefix is attached to the stem, sometimes with a zero-width non-joiner.

Question

می‌روی؟ ↑

Rising intonation for yes/no questions.

Memorize It

Mnemonic

Remember 'M-B-N-N': My Big New Notebook. M for 'می', B for 'ب', N for 'ن', N for 'نمی'.

Visual Association

Imagine a robot with four buttons on its chest. Pressing 'می' makes it walk, 'ب' makes it stop, 'ن' makes it freeze, and 'نمی' makes it turn off.

Rhyme

Prefixes at the start of the line, make the verb shine every time.

Story

Ali wanted to go to the store. He added 'می' to 'رو' to start walking. But he saw a sign saying 'نرو' (Don't go). He felt sad and said 'نمی‌روم' (I am not going).

Word Web

می‌روممی‌خورمبروبخورنرونخورنمی‌رومنمی‌خورم

Challenge

Write 5 sentences using each of the four prefixes in 5 minutes.

Cultural Notes

In Tehrani dialect, the 'می' prefix is often shortened to 'م' in rapid speech.

Shirazi speakers often use different vowel sounds with prefixes.

In formal writing, the 'ب' prefix is always written clearly.

These prefixes evolved from Old Persian particles.

Conversation Starters

“

می‌روی؟

“

می‌خوری؟

“

می‌توانی بیایی؟

“

می‌خواهی بروی؟

Journal Prompts

Write about what you do every morning using 'می'.
Write a list of things you don't do using 'نمی'.
Write a set of instructions for a friend using 'ب'.
Describe a day where you didn't do anything using 'نمی'.

Common Mistakes

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

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Test Yourself

Fill in the blank with the correct prefix for a daily habit.

من هر روز ورزش ___‌کنم.

✓ Correct! ✗ Not quite. Correct answer: می
Daily habits require the می prefix for the present tense.
Which sentence is a correct negative command? Multiple Choice

Choose the correct way to say 'Don't go!':

✓ Correct! ✗ Not quite. Correct answer: نرو
نرو is the imperative negative. نمی‌روی means 'you are not going'.
Find the mistake in this sentence: 'I want to eat' (می‌خواهم می‌خورم) Error Correction

Find and fix the mistake:

من می‌خواهم می‌خورم.

✓ Correct! ✗ Not quite. Correct answer: من می‌خواهم بخورم.
After 'want' (می‌خواهم), the second verb must be in the subjunctive mood using the ب prefix.

Score: /3

Practice Exercises

8 exercises
Fill in the correct prefix.

من ___روم (I am going).

✓ Correct! ✗ Not quite. Correct answer: می
Present tense uses 'می'.
Choose the correct negative. Multiple Choice

___روم (I am not going).

✓ Correct! ✗ Not quite. Correct answer: نمی
Present negative uses 'نمی'.
Fix the error. Error Correction

Find and fix the mistake:

ب‌نرو

✓ Correct! ✗ Not quite. Correct answer: نرو
Negative command drops 'ب'.
Reorder the words. Sentence Reorder

روم / می‌ / من

✓ Correct! ✗ Not quite. Correct answer: من می‌روم
Subject-Prefix-Stem-Ending.
Translate to Persian. Translation

Don't eat!

✓ Correct! ✗ Not quite. Correct answer: نخور
Negative command is 'نخور'.
Conjugate for 'تو'. Conjugation Drill

می + رو

✓ Correct! ✗ Not quite. Correct answer: می‌روی
Second person singular ending is 'ی'.
Match prefix to meaning. Match Pairs

می

✓ Correct! ✗ Not quite. Correct answer: Habitual
می is for habitual/continuous.
Build a sentence. Sentence Building

Use 'نمی' and 'خوردن'.

✓ Correct! ✗ Not quite. Correct answer: من نمی‌خورم
Present negative.

Score: /8

Practice Bank

10 exercises
Translate to Persian Translation

I don't know.

✓ Correct! ✗ Not quite. Correct answer: نمی‌دانم
Complete the suggestion: 'Should we go?' Fill in the Blank

___‌رویم؟

✓ Correct! ✗ Not quite. Correct answer: ب
Put the words in order: 'Don't buy this phone.' Sentence Reorder

این / نخر / را / گوشی

✓ Correct! ✗ Not quite. Correct answer: این گوشی را نخر
Match the prefix to its function Match Pairs

Match the following:

✓ Correct! ✗ Not quite. Correct answer: all
How do you say 'I was reading'? Multiple Choice

Select the correct past continuous form:

✓ Correct! ✗ Not quite. Correct answer: می‌خواندم
Fix the negative past tense: 'I didn't see' (نمی‌دیدم) Error Correction

من دیروز فیلم را نمی‌دیدم.

✓ Correct! ✗ Not quite. Correct answer: من دیروز فیلم را ندیدم.
Add the prefix: 'I am speaking Persian.' Fill in the Blank

من فارسی حرف ___‌زنم.

✓ Correct! ✗ Not quite. Correct answer: می
Which is more polite for 'Please sit down'? Multiple Choice

Choose the correct formal command:

✓ Correct! ✗ Not quite. Correct answer: بنشینید
Translate to Persian Translation

Don't look!

✓ Correct! ✗ Not quite. Correct answer: نگاه نکن
Complete the sentence: 'I can go.' Fill in the Blank

می‌توانم ___‌روم.

✓ Correct! ✗ Not quite. Correct answer: ب

Score: /10

FAQ (8)

'می' is for continuous/habitual, 'ب' is for commands/subjunctive.

No, they are mutually exclusive.

It is a grammatical rule to avoid double prefixing.

Only for present tense.

من نمی‌روم.

Mostly, but pronunciation varies.

The verb will sound incorrect or like a different tense.

Use the provided exercises and journal prompts.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish moderate

No + verb

Persian prefixes are attached to the verb.

French partial

Ne...pas

Persian is a single prefix.

German low

Nicht

Persian is morphological.

Japanese moderate

Nai

Persian uses prefixes.

Arabic moderate

La

Persian is more agglutinative.

Chinese low

Bu

Persian conjugates.

Learning Path

Prerequisites

Previous
Persian Commands: Telling People What to Do (Imperatives)
Next
The 'Right Now' Tense (دارم می‌روم)

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