Rangkuman Materi Himpunan dalam Matematika

 Present simple of to be : am, is , are

The present simple of the verb be has three forms:

‣ I am.
‣ He/She/It is.
‣ We/You/They are.

They= people and things

We use he for a man, she for a woman, and it for a thing.

• He‘s a little boy. 
• She‘s beautiful. 
• I like this TV. It‘s very big. 

We use they for people and for things.

• I love Sara and Jonas. They are my friends.
• I love these chairs. They are very beautiful.

Don’t forget the subject

We always need a subject before the verb.

• It is cold.
• Is cold.
• Sally is a wonderful woman.
• Is a wonderful woman.

Contractions or short forms

We use ‘m, ‘s and ‘re with personal pronouns (I, you, he, etc.)

• I’m sad.
• You’re tired.
• She’s from Scotland.

But we can also use ‘s with names.

• Laura’s beautiful.
• London’s an expensive city. 

Contractions in short answers

We can only use contractions in negative short answers. Not in positive short answers.

• Yes, I am.
• Yes, I’m.
• Yes, she is.
• Yes, she’s.
• Yes, they are.
• Yes, they’re.  

The  Present simple of be : use

We use the verb be to talk about:

Who we are: I‘m Steven, and this is Isabella. And this is my daughter, Alicia.

Age: I‘m 24 years old, and my father is 50. 

Job: I‘m a teacher, and my wife is a doctor. 

Nationality: Alex is from Ireland, and Sonia is from Spain.

Feelings: I‘m scared. She is very tired. 

Colour: Our dog is black. His eyes are blue.

Prices: It‘s seven pounds. This T-shirt is twenty dollars.  

The weather: It‘s sunny today. It is very cold this morning. 

The time: What time is it? It‘s ten past four. 

Descriptions in general: He is very short and thin. The cars are old and cheap.