Vì MO là phân giác góc MNP ( giả thiết )

=> góc N₁ = \(\dfrac{1}{2}\)góc MNP

Vì PO là phân giác góc MPN ( giả thiết )

=> góc P₁ = \(\dfrac{1}{2}\)góc MPN

Xét tam giác MNP có:

góc M + góc MNP + góc MPN = 180^o ( định lý tổng 3 góc trong tam

giác )

Mà góc M = 60^o ( giả thiết )

=> góc MNP + góc MPN = 180^o - 60^o = 120^o

=> \(\dfrac{1}{2}\)( góc MNP + góc MPN ) = 60^o

=> \(\dfrac{1}{2}\)góc MNP + \(\dfrac{1}{2}\)góc MPN = 60^o

=> góc N₁ + góc P₁ = 60^o

Xét tam giác OMN có:

góc N₁ + góc P₁ + góc O₁ = 180^o ( định lý tổng 3 góc trong tam giác )

Mà góc N₁ + góc P₁ = 60^o ( chứng minh trên )

=> góc O₁ = 180^o - 60^o = 120^o

Vậy góc NOP = 120^o

1. Parents look after their children

=> Their children are looked after by parents.

1.Did people make jeans two hundred years ago ?

=> Are jeans made two hundred years ago?

2. Have you learned English for three years ?

=> Has English been learned for three years?

3. Did the cartoon attact the children ?

=> Are the children attacted by the cartoon?

1. We (have) have Geography every Wednesday ?
2. What your son usally (have) has for breakfast ?

1. His mother is older than she...

​a) likes

​b) looks like

​c) looks

​d) is like

​2. He ran .... than his friend

​a) faster

​b) fastest

​c) fast

d) more fast​

Em thay đổi nhận thức là một điều rất tốt.

=> Cụm C-V trên là thành phần chủ ngữ trong câu.

1)

Hi. My name is Ha. I'm Vietnamese. I'm twelve years old. Now I am in grade 6. I live with my father and my mother in Ho Chi Minh City. My country is very beautiful. We have lots of mountains and river. We have forests and some beautiful beaches, too.

a, What's Ha's nationality ?

She is Vietnamese.

b, How old are you -> is she ?

She is twelve years old.

c, Which grade is she in ?

She is in grade 6.

d, Who does she live with ?

She lives with her father and her mother.

e, Is Vietnam a very beautiful country ?

Yes, it is.

f, Where does she live ?

She lives in Ho Chi Minh city.

g, Does Vietnam have a lot of mountains and rivers ?

Yes, it does.

2) Hoàn tất các câu sau, dùng : some, a, an, any, few, little, lot and lots

1. The farmers produce lots of rice

2. I can speak a little English

3. She needs a lot of meat

4. There are a few people in the house

5. She has some cookies. Would you like to eat some ?

6. I'm hungry. I want some milk

1. They aren't coming to London on Monday.

2. He isn't finishing work tomorrow.

3. She isn't spending her next holiday at home.

4. He isn't leaving for Ha Noi tomorrow.

5. We aren't going out tonight.

Tell us about your new school.