1) My mother is younger than my father.

2) Everest is the highest mountain.

30, my book isn't diffirent her book

1. No mountain is higher than Mount Everest.
2. My father is better than anyone else, including my mother.
3. Lan draws more perfectly than anyone else.
4. The last time I saw her was a long time ago.
5. We haven't gone out for a picnic with our classmates for two years.
6. We haven't met Cong Phuong football player for three months.
7. I haven't talked to him since 2000.
8. I haven't seen John since I was in Hanoi.
9. He hasn't called me for two months.
10. This is the first time I have written to her.
11. This is John's first visit to Halong Bay.
12. I haven't seen him for two years.
13. Tuan last returned to his hometown 15 years ago.

1 : She doesn't have any books on the bookshelf.

-> There aren't any books on her bookshelf.

2 : The house aren't as pretty as those houses.

-> Those houses are prettier than this house.

3 : No student in my class is as intelligent as Tam.

-> Tam is the most intelligent student in my class.

4 : The streets are more dangerous than that street.

-> That street isn't as dangerous as this streets.

5 : No moutain in the world is as tell as Mount Everest.

-> Mount Everest is the tallest mountain in the world.

1 : She doesn't have any books on the bookshelf . -> There aren't any books on her bookshelf.

2 : The house aren't as pretty as those house . -> Thoes house are prettier than this house. 

3 : No student in my class is as intelligent as Tam . -> Tam is the most intelligent student in my class.

4 : The streets are more dangerous than that street . -> That street isn't as dangerous as this streets.

5 : No moutain in the world is as tell as Mount Everest . -> Mount Everest is the tallest mountain in the world.

1, Mount Everest is the highest mountain in the world

2. The Pacific ocean is the deepest ocean in the world

3.The Red sea is the warmest sea in the world

4.The Nile is the longest river in the world

5.Russia is the biggest country in the world

thanks

I. Complete the sentences with comparative or superlative form

1. Mount Everest is (high) _______the highest_______ mountain in the world.

2. Winter is (cold) _______the coldest_______ season in the year.

3. Going by car is (convenient) _______more convenient than_______ going by bicycle in this area.

4. The Sahara is (hot) _______the hottest_______ desert in the world.

5. This building is (modern) _______more modern than_______ that one.

6. The boat trip is (good) _______the best_______ experience of my life.

7. Are your streets (narrow) _______narrower than_______ our streets?

8. It’s (beautiful) _______the most beautiful_______ mountain in Australia.

9. This park is (beautiful) _______more beautiful than_______ that park.

10. The weather in Cua Lo Beach is (hot) _______hotter than_______ that in Ha Noi.

1.the highest

2.the coldest

3.more convenient

4the hottest

5.more modern

6.the best

7.more narrow than

8.the most beautiful

9.more beautiful

10.hotter

Đáp án: the highest

mount everest is the highest mountain in the world
---> no mountain in the world is higher than mount everest

no mountain is as tall as mout everest

0. The Nile is longer than any other river in the world. (long)

__The Nile is the longest river in the world__

1. No ocean in the world is deeper than the Pacific. (deep)

__The pacific is the deepest ocean in the world__

2. Mount Everest is higher than every mountain in the world. (high)

___Mount Everest is the highest mountain in the world___

3. You must keep dogs outside shops.

 Dogs__must be kept outside shops_

4. They will sue the company for wage discrimination.

 The company ____will be sued for wage discrimination______

5. She can't pick many flowers.

 Many _flowers can't be picked__

0, No river in the world is as long as the Nile.

1, No ocean in the world is as deep as the Pacific.

2, No mountain in the world is has high as Mount Everest.

3, Dogs must be kept outside shops.

4, The company will be sued for wage discrimination.

5, Many flowers cannot be picked.