Vì :

\(\frac{a}{b}=\frac{c}{d}\Rightarrow ad=bc\) (nhân chéo)

Ta có :

\(ab=cd\)

\(\Rightarrow a:d=b:c\)

\(\Rightarrow\frac{a}{b}=\frac{c}{d}\) ( đpcm )

1.I went to the cinema last weekend .

2.She was happy today .

3.They didn't eat fish .

4.Did he play tennis ?

5.We were at school now .

1. I go to the cinema every weekend.

→ I went to the cinema last weekend.

2. She is happy today.

→ She was happy yesterday.

3. They don’t eat fish.

→ They didn’t eat fish.

4. Does he play tennis?

→ Did he play tennis?

5. We are at school now.

→ We were at school yesterday.

Watching television is one of the activities I like to do in my spare time. I enjoy watching cartoons on Saturday mornings and sports programs on Sunday afternoons. I also watch television during the week after I have finished all my school work. At night, I especially like to watch movies and situation comedies. If I have a lot of homework, I try to arrange my schedule so that I can watch at least one of my favorite shows. Watching television is not the only activity that I do in my spare time. My other favorite activities are making paper flowers and going shopping with my friends. However, when I have spare time, I spend more time watching television than any other activities. Watching television can help me not only relax but also build me a huge knowledge of the open world.”

• Hoạt động trong thời gian rảnh.

I have many subjects at school to learn. So I have a little free time to relax

In my free time, I always play chess. Sometimes, I listen to Vietnamese and English songs.

I often watch TV after dinner about one hour

Rarely, I go to the library to read comic books

That's all.

• Hoạt động trong giờ ra chơi

At recess, all teachers go to the assembly for relax. Some student play hide and seek. Some girls play skipping or chatting. Some boys play marble. Almost, they play catch. I love my school recess.

Hello everyone today i talk about my activities in my free time and in my recess. In my class , i sometime do my homeworks with my friend and in my free time i often play badminton with my friends or play volleyball. In my recess, i sometime eating and drinking in our canteen, or chatting , talking with my friends, or play a games. I think it's very great.( Bye)

Thank nhe!!

1. They don't enjoy going to the concert

2. My father startes work at seven thirty

3. Most teenagers like to go to the parties

1. They don't enjoy going to the concert.

2. My father starts works at seven thirty.

3. Most teenagers like to go to the parties.

+ Need to think

+ Training brain well, intelligent

+ Soft Body, endurable

+ Helping quicklier

+ Training dexterity

+ Must be thinking + Brain Train good , smart + Body soft, supple + Helps agile coal , + Train dexterity

1.I will cook dinner tonight.
2.Don't forget get up at 6.30 tomorrow morning.
3.What thickness is that novel ?
4.He doesn't live near the school.

tên scahs là gì vậy mấy bạn

I went to the cinema last weekend

i went to the cinema last week

Hehe làm bài V thôi nhé:

Jobs: Actor, Engineer, Fireman, Nurse, Refrigerator, Student.

Rooms: Bathroom, Dining Rooms, Kitchen, Garage, Sitting room, Stove.

Objects: Dishwasher, Dryer, Washing machine
 

IX. Em hãy dung từ gợi ý để viết hoàn chỉnh những câu sau.

Ví dụ : 0. The Nile / longest / river / world.

The Nile is longest river in the world.

1. Trang / the / good / student / our class .

=> Trang is the best student in our class.

2. Refrigerator / next /closet / and / front / dishwasher.

=> Refridgerator is next to the closet and in front of the dishwasher.

3. Traveling / train / slower / but / intersesting /traveling / plane.

=> Travelling by train is slower but interesting than travelling by plane.

4. Miss / Hue / take care / sick children /same hospital / as / mother.

=> Miss Hue takes care of sick children in the same hospital as mother.

5. Which / most / suitable house / Mr. Lam /and / family ?

=> Which is the most suitable house for Mr.Lam and his family?

6. Uncle / farmer / and / grow / lot / vegetables / his farm.

=> My uncle is a farmer and he grows a lot of vegetables in his farm.

7. It / difficult / find / a partment / Ho Chi Minh city ?

=> Is it difficult to find an apartment in Ho Chi Minh city?

8. Brazil / most / successful / soccer team / world.

=> Brazil is the most successful for soccer team in the world.

9. Who / the / fat / person / your / group?

=>Who is the fattest person in your group?

10. Lesson / this year / long / and / more difficult / those / last year.

=> Lesson in this year is longer and more difficult than those last year.