Why Is "To Be" So Important?
The verb "to be" is the most used verb in English. You need it to say who you are, describe things, talk about feelings, and much more. Unlike other verbs, "to be" has special forms that you must memorize.
Present Simple Forms
| Subject | Verb | Short Form |
|---|---|---|
| I | am | I**'m** |
| You | are | You**'re** |
| He | is | He**'s** |
| She | is | She**'s** |
| It | is | It**'s** |
| We | are | We**'re** |
| They | are | They**'re** |
When Do We Use "To Be"?
1. Identity and Names
- I am Maria. / I**'m** Maria.
- He is a doctor. / He**'s** a doctor.
2. Age
- She is 25 years old.
- I am a student. I**'m** 19.
3. Nationality and Origin
- We are from Brazil.
- They are Japanese.
4. Descriptions and Adjectives
- The weather is beautiful today.
- You are very kind.
- I am tired.
5. Location
- The book is on the table.
- We are at school.
6. Jobs and Professions
- My father is a teacher.
- They are engineers.
Negative Form
Add not after the verb:
| Full Form | Short Form |
|---|---|
| I am not | I**'m not** |
| You are not | You aren't |
| He is not | He isn't |
| She is not | She isn't |
| It is not | It isn't |
| We are not | We aren't |
| They are not | They aren't |
Examples:
- I**'m not** hungry.
- She isn't at home.
- They aren't ready.
Question Form
Put the verb before the subject:
- Am I late?
- Are you a student?
- Is he your brother?
- Are they from Spain?
Short answers:
- Yes, I am. / No, I**'m not**.
- Yes, she is. / No, she isn't.
- Yes, they are. / No, they aren't.
Example Sentences
- I am happy to meet you.
- She is a very good singer.
- We are in the classroom right now.
- It isn't cold today. It is warm and sunny.
- Are you ready for the exam? — No, I**'m not**. I**'m** nervous.
- My cats are black and white. They are very friendly.
- Is this your phone? — Yes, it is.
Common Mistakes
Mistake 1: Forgetting "to be" entirely
- Wrong:
I happy. - Correct: I am happy.
Mistake 2: Using "to be" with other verbs
- Wrong:
I am like pizza. - Correct: I like pizza. (No "am" needed — "like" is a separate verb.)
Mistake 3: Mixing up am/is/are
- Wrong:
He are a student. - Correct: He is a student.
Mistake 4: Using "do/does" with "to be"
- Wrong:
Do you are happy? - Correct: Are you happy?
Practice Tips
- Introduce yourself: Practice saying "I am [name]. I am from [country]. I am [age] years old. I am a [job/student]."
- Describe a photo: Look at a picture and describe what you see using "is" and "are." Example: "There is a cat. It is brown. There are two children. They are happy."
- Use contractions: In everyday English, people almost always use short forms (I'm, he's, they're). Practice using them naturally.
- Remember: "To be" does NOT use do/does for questions and negatives. This makes it different from all other verbs!