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The verb “to be” is the most fundamental verb in English, and I’ve taught it to thousands of students at every level. Yet it remains one of the most confusing because it’s so irregular. It has eight different forms across different tenses—am, is, are, was, were, be, being, been—and none of them follow a predictable pattern. Most students eventually memorize the forms through repetition, but understanding when and why to use each one is where the real learning happens.
You’ll walks you through every form of “to be,” when to use each one, the common mistakes learners make, and how to practice until these verb forms feel natural. By the end, you’ll understand not just the rules, but the reasoning behind them.
Key Takeaways
- To be has eight forms — am, is, are, was, were, be, being, been — each tied to a specific tense or subject.
- Match the verb to the subject and tense — “I am” (present singular), “He is” (present singular), “They are” (present plural), “I was” (past singular), “They were” (past plural).
- Use “to be” to link the subject to a description — “She is a doctor” (is links “she” to “doctor”). Don’t expect an action; expect a state or condition.
- In negatives and questions, position matters — “Are you ready?” (inverted in questions). “She is not ready” (not follows the verb).
- Passive voice requires “to be” + past participle — “The book was written by the author” uses “was” (past tense of be) + “written” (past participle).
Understanding To Be Verbs
What Are To Be Verbs?
The verb “to be” is a linking verb, which means it connects the subject of a sentence to a noun, pronoun, or adjective that renames or describes it. Unlike action verbs—which express what someone is doing—linking verbs express what someone or something is.
Example 1: “I am happy.” (Am links “I” to the adjective “happy.”)
Example 2: “She is a teacher.” (Is links “she” to the noun “teacher.”)
Example 3: “They are students.” (Are links “they” to the noun “students.”)
Why “To Be” Matters in English Grammar
The verb “to be” is the most frequently used verb in English for a reason: it’s essential for conveying existence, identity, and state of being. You cannot build a grammatically correct English sentence without understanding how to use it properly. In my classroom, I tell students that mastering “to be” is like learning the alphabet before learning to read—it’s foundational.
Beyond simple statements, “to be” appears in continuous tenses (“I am studying”), passive voice (“The door was opened”), and as an auxiliary verb in complex structures. Understanding this one verb unlocks dozens of sentence patterns.
The Eight Forms of To Be
Here is a complete conjugation table showing all eight forms of “to be” across present, past, and other forms:
| Form | Tense & Person | Example Sentence |
|---|---|---|
| Am | Present tense, first-person singular (I) | I am a student. |
| Is | Present tense, third-person singular (he/she/it) | He is a doctor. She is happy. It is raining. |
| Are | Present tense, second-person and plural (you/we/they) | You are late. We are friends. They are ready. |
| Was | Past tense, first and third-person singular (I/he/she/it) | I was at home yesterday. He was tired. |
| Were | Past tense, second-person and plural (you/we/they) | You were late. We were happy. They were outside. |
| Be | Base infinitive form (used with modals and infinitives) | I want to be a teacher. You should be careful. |
| Being | Present participle (used in continuous and passive forms) | She is being kind. The house is being painted. |
| Been | Past participle (used in perfect tenses and passive voice) | I have been to Paris. The book has been read. |
Each Form Explained with Examples
Am (Present Tense, First-Person Singular)
Use “am” when you are talking about yourself in the present moment.
Example 1: I am excited about the trip.
Example 2: I am not feeling well today.
Example 3: Am I late for the meeting?
Remember: Only “I” takes “am.” No other subject uses this form.
Is (Present Tense, Third-Person Singular)
Use “is” for he, she, it, and singular nouns in the present tense.
Example 1: He is a talented musician.
Example 2: The food is delicious.
Example 3: Is your sister coming to the party?
Are (Present Tense, You/We/They)
Use “are” for you (singular or plural), we, and they in the present tense.
Example 1: You are a good friend.
Example 2: We are ready to start.
Example 3: They are not happy with the decision.
Was (Past Tense, I/He/She/It)
Use “was” for I, he, she, and it in the past tense.
Example 1: I was at home yesterday.
Example 2: She was tired after work.
Example 3: Was the movie good?
Were (Past Tense, You/We/They)
Use “were” for you, we, and they in the past tense.
Example 1: You were late for the meeting.
Example 2: They were happy to see each other.
Example 3: We were studying all night.
Be (Base Infinitive Form)
Use “be” in its base form with modal verbs (can, could, should, will, etc.) or after infinitive markers (to).
Example 1: I want to be a teacher.
Example 2: You should be more careful.
Example 3: He will be home soon.
Being (Present Participle)
Use “being” in continuous tenses and in passive voice constructions.
Example 1: She is being very kind today.
Example 2: The house is being painted this week.
Example 3: I’ve been thinking about the problem.
Been (Past Participle)
Use “been” in perfect tenses (with have/has/had) and in passive voice with perfect tenses.
Example 1: I have been to Paris twice.
Example 2: They had been waiting for hours.
Example 3: The letter has been delivered.
Using To Be in Different Contexts
In Statements (Affirmative)
To be verbs are used in statements to describe the state or identity of the subject.
Example 1: She is happy.
Example 2: The book was interesting.
Example 3: They are tired.
Rule: Match the verb form to the subject and tense. “I am” is correct; “I is” is incorrect. “She is” is correct; “She are” is incorrect.
In Questions
When using “to be” in questions, the verb usually comes before the subject.
Example 1: Are you ready for the test?
Example 2: Was the party fun?
Example 3: Is she your sister?
Compare:
- Statement: You are ready. → Question: Are you ready?
- Statement: She is happy. → Question: Is she happy?
- Statement: They were outside. → Question: Were they outside?
In Negative Sentences
To form negative sentences with “to be,” place “not” after the verb.
Example 1: She is not happy.
Example 2: The book was not interesting.
Example 3: They are not tired.
Contractions: In spoken English and informal writing, we often use contractions:
- is not → isn’t
- are not → aren’t
- was not → wasn’t
- were not → weren’t
Example: “She isn’t happy” is the same as “She is not happy.”
In Continuous Tenses
The verb “to be” is essential in continuous (or progressive) tenses. It works with the present participle (-ing form) of another verb.
Example 1: I am studying English. (present continuous)
Example 2: She was reading a book. (past continuous)
Example 3: They will be arriving soon. (future continuous)
In Passive Voice
The verb “to be” is used in passive voice with the past participle of the main verb.
Example 1: The cake was baked by my mother. (past passive)
Example 2: The door is being opened. (present continuous passive)
Example 3: The project will be completed tomorrow. (future passive)
Key Rule: The verb “to be” is always present in passive voice constructions. It pairs with the past participle of the main verb to create the passive voice. Without “to be,” you don’t have passive voice.
Common Mistakes and How to Fix Them
✗ Incorrect: She am a student.
✓ Correct: She is a student.
Why: “She” is third-person singular, so the verb must be “is,” not “am.” Remember: only “I” takes “am.”
✗ Incorrect: They was happy with the decision.
✓ Correct: They were happy with the decision.
Why: “They” is plural, so in the past tense, the verb must be “were,” not “was.” “Was” is only for I/he/she/it.
✗ Incorrect: She is not happy.
✓ Correct: She is not happy. (Both are actually correct in formal writing. But “Isn’t” is the contracted form, more common in speech.)
Why: This is correct. The note is that in speech, we usually say “isn’t” rather than “is not,” but both are acceptable.
✗ Incorrect: They is good friends.
✓ Correct: They are good friends.
Why: “They” is plural, so the verb must be “are,” not “is.” The subject-verb agreement must match in number.
✗ Incorrect: I have be to France.
✓ Correct: I have been to France.
Why: With “have,” use the past participle “been,” not the base infinitive “be.”
Sample Dialogue
Student: Is the test going to be hard?
Teacher: It will be challenging, but you’ve been studying well. Are you ready?
Student: I am not sure. I’ve been struggling with subject-verb agreement.
Teacher: That’s okay. Remember, “she is happy” is correct, but “she are happy” is wrong. One more review, and you’ll be fine.
Quick Quiz
Quick Quiz
- Fill in the blank: “I ________ a student.” (am / is / are)
- Fill in the blank: “They ________ happy with their new home.” (was / were / be)
- Choose the correct form: “She ________ tired after work.” (was / were / am)
- Which sentence is correct in a question form? A) “Is you ready?” B) “Are you ready?”
- Fill in the blank: “The house ________ being painted right now.” (is / are / am)
Answers: 1. am (first-person singular present) · 2. were (plural, past tense) · 3. was (third-person singular, past tense) · 4. B (“Are you ready?” is correct—plural/second-person with present tense) · 5. is (singular noun “house” + present continuous requires “is being”).
Related Articles
- ↑ Master Pillar: English Grammar
- Types of Verbs in English: A Comprehensive Guide — action, linking, auxiliary, modal verbs explained
- Movement Words: Verbs of Body Movement and Motion — action verbs for vivid description
- How to Use Modal Verbs in English — can, could, should, will, would, and more
- Phrasal Verbs: Combinations That Make Sense — verbs with prepositions and particles
- ↑ Back to pillar: English Verbs (Pillar)
Frequently Asked Questions
What are the different forms of “to be” verbs in English?
The eight forms of “to be” are: am, is, are, was, were, be, being, and been. Each form is used in a specific tense or context. For example: “I am happy” (present), “She was happy” (past), “They have been happy” (present perfect).
How do I use “am,” “is,” and “are” correctly in sentences?
Use “am” only with “I” in the present tense: “I am ready.” Use “is” with singular subjects (he, she, it) in the present tense: “He is ready.” Use “are” with plural subjects and “you” in the present tense: “You are ready. We are ready. They are ready.”
What is the difference between “was” and “were”?
“Was” is used for first-person and third-person singular subjects (I, he, she, it) in the past tense: “I was happy. He was happy.” “Were” is used for second-person and plural subjects (you, we, they) in the past tense: “You were happy. We were happy. They were happy.”
When do I use “be,” “being,” and “been”?
Use “be” as the base infinitive form after modals or “to”: “I want to be a doctor. You should be careful.” Use “being” in continuous and passive tenses: “She is being kind. The house is being built.” Use “been” in perfect tenses with have/has/had: “I have been to Paris. They have been waiting.”
Why is the verb “to be” irregular?
The verb “to be” is irregular because it doesn’t follow the standard pattern of regular English verbs. Instead of adding -ed to form the past tense, it changes completely: be → was/were. This is because “to be” is one of the oldest and most frequently used verbs in English, and it has retained its ancient irregular conjugation patterns.
Can I use “to be” in the passive voice?
Yes, “to be” is essential in passive voice. The passive voice structure is: to be + past participle. For example: “The cake was baked by my mother.” “The letter is being delivered.” “The project will be completed tomorrow.” Without “to be,” you cannot form passive voice in English.
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