Cho hình vuông ABCD,M∈CD,AM\(\cap\)BC={E}

đường thẳng vuông góc với AM={A}\(\cap\)CD={N}

OE=ON

C/m: a.B,D,O thẳng hàng

b.\(\frac{1}{AB^2}=\frac{1}{AM^2}+\frac{1}{AE^2}\)

c.OA⊥NE

d.\(\frac{1}{AD^2}\)≥\(\frac{2}{AM.AE}\)

Nhớ vẽ hình!!!!!!

Complete the following sentences,using comparisons.

1.School facilities/the city/good/than/in/country.

2.living cost/city/high/than/country

3.standard of living /country/low/than/that/city.

4.rural people/honest/hospitable/urban people.

5.rural people /not have/many job opportunities/as/urban people.

6.rural people /live/close/nature/than/urban people

7.urban people/not eat/healthy/people/who/live/the country

8.there/many/shopping centres/places of interest/the city/than/the country

9.there/few/good high schools/universities/the coountry/than/the city

10.it/easy/have access to/hi-tech/city/than/the country

Sentence Transformation : Comparatives:

1.Grapes are more expensive than apples.-> Apples are not ..........................................................................

2.I speak English more fluently than my brother.

My brother doesn't..........................................................................

3.Ha can cook better than her sisters.

Ha's sisters can't..........................................................................

4.China is pooer than Japan.

China isn't..........................................................................

5.Steve can run faster than anyone inj our class.

No one else in our class..........................................................................

6.That tower isn't as high as this one

This..........................................................................

7.My flat isn't as large as his.

My flat is..........................................................................

8.Helan plays the piano worse than Liz.

Helan doesn't ..........................................................................

9.That book isn't as useful as mine.

My books are..........................................................................

10.Kathy writes more carefully than Kelly.

Kelly doesn't..........................................................................

11.Jimmy drives more dangerously than he did last year.

Jimmy doesn't..........................................................................

12.Richard is younger than he looks.-> Richard isn't..........................................................................

13.Lan didn't spend as much money as Hoa.-> Hoa spent..........................................................................

14.The station was nearer than I thought.-> The station wasn't..........................................................................

15.The meal didn't cost as much as I expected.-> The meal cost..........................................................................

16.I go out less than I used to.-> I don't..........................................................................

17.I know them better than you do.-> You don't..........................................................................

18.There are fewer people at this meeting than at the last one.

There aren't..........................................................................

Guided Sentence Building: Use the words given to write comparatives:

1.A tiger/dangerous/a bear.

2.A horse/fast/a cow.

3.A good health/important/money.

4.Love/valuable/materials.

5.Con dao/much/small/Phu Quoc.

6.They/do/test/well/they/last month.

7.His father/skillful/carft-man/he

8.Chinese food/much/delicious/English food.

9.Tommy/caraless/driver/Miller.

10.Mary/have/much/money/Susan.

11.Tonight/she/dance/gracefully/she/last Sunday.

12.John's school report.bad/last year.

13.Mark/do sums/quickly/Peter.

14.Streets/Ha Noi/narrow/those/Sai Gon.

15.Mrs.Green/look/attractive/usual/that hair style.

Comparison of Equality: Read the situations and complete the sentences:

1.Hoa and Tim are both 13 years old.-> Tim is the..................................................................................

2.She speaks English very well,and her sister speaks well,too.

She speaks..................................................................................

3.They like spaghetti,but I like hamburger.-> Their tastes are..................................................................................

4.They've lived here for a long time but we've lived here longer.

They haven't..................................................................................

5.My birthday is 12 August.Tom's birthday is 12 August.

My birthday is..................................................................................

6.Sandra spent 100 dollars,but Susan spent 120 dollars.

Sandra..................................................................................

7.I thought she was intelligent girl,but she is so stupid.

She is ...........................................................................

8.Nam drives carefully,but his sister drives more carefully.

Nam doesn't..................................................................................

9.We lelf the meeting at 10 pm,they left the meeting at 10 pm too.

We lelf..................................................................................

10.This car is as expensive as mine.-> This car is the..................................................................................

11.Long is as tall as Nam.-> Long is the..................................................................................

12.I'm quite tall,but you are tall.-> I'm..................................................................................

13.You know a bit about Janpanese culture,but I know more.

You don't..................................................................................

14.It's still cold,but it was colder yesterday.-> It isn't..................................................................................

15.I still feel tired,but I felt more tired yesterday.-> ......................................................................................

Comparison ò Equality:Use the suggested words to write complete sentence:

1.A horse/not/big/an elephant

2.They/not/hard working/that/last year

3.Healthy diet/important/play sports.

4.David/study/mathematics/well/his elder brother

5.James/not work/carefully/other workers

6.Last night,they/not go/bed/early/usual

Complete each of these sentences in such a way that keeps the meaning unchanged.

1.I can't play the guitar ,so can't join the festival.

I wish........................................................................

2.I'm sorry that I didn't go to Mary's pary last Sunday.

We wish........................................................................

3.We need him now,but he isn't here.

We wish......................................................................

4.Everyone has a srong desire to live happily.

No-one doesn't wish........................................................................

5.It's a pity that she didn't prepare carefully.

She wishes........................................................................

6.We are not pleased with the postman as he often bring us newpapers and letter late.

We wish........................................................................

7.He dreams od becoming an astronaunt one day.

He wishes........................................................................

8.The weather is not good enough for gong on a picnic.

I wish........................................................................

9.He didn't take my advise ,so he regrets it now.

He wishes........................................................................

10.We don't have enough money to buy such an expensive flat.

We wishes........................................................................

11.It's a pity that I was not able to get in touch with them.

I wish........................................................................

12.She regrets not learning English during her college years.

She wishes........................................................................

13.I'm worried as they haven't relied me letter for so long.

I wish........................................................................

14.Mrs.Ashley is alway annoyed with her son.He is very lazy.

Mrs.Ashley wishes......................................................................

15.He regretted offending her by shouting an insulting name at her.

He wished......................................................................

16.I'm afraid I haven't got time to listen to you.

I wish......................................................................

17.She is always noisy.I really don't like it.

I wish she......................................................................

18.I want my boss to give me a pay rise.

I wish my boss......................................................................

Complete the sentences with suitable subordinator from the box

1. The children are very excited ............ they're going to visit a craft village this weekend.

2. We will tell Alice about the trip ........... we meet her.

3. .............. it rained a lot, they enjoyed their holiday.

4. I bought a new pair of glasses............ I can see better.

5. .......... I go out tonight, I will have to finish this essay.

6.Phong burnt his hand ............ he was cooking dinner.

7. Laura always get up early every morning ............. she's not late for her work.

8. Mr. Harrison seems to have a lot of money .............. he lives in a luxurious house.

9. ................ I was waiting for the bus, I saw some foreign tourists.

10. They didn't win the game............ they played very well.

Sentence Transformation:

1.We haven't seen James for 10 years.

It's......................................................................

2.When is John and Mary's wedding?

When are......................................................................

3.It's unnecessary for you to buy so much food and drink for the journey.

You don't......................................................................

4.He was obliged to bringing up the children after his wife had gone to studied abroad.

He......................................................................

5.We arrived too late to see the first film.

We didn't......................................................................

6.I have nver read such romantic story.

This is......................................................................

7.We started cooking for the party four hours ago.

We have......................................................................

8.He is too inexperienced to solve this problem.

He isn't......................................................................

9.We couldn't get nearer because of the police.

The police wouldn't......................................................................

10.She bought this house in 1973.

She has......................................................................

11.She can't have any more children because of her age.

She is too......................................................................

12.She doesn't usually stay up so late.

She is not used......................................................................

13.It isn't necessary for you to shout so loudly.

You......................................................................

14.We spent five hours getting in London=>It......................................................................

15.I couldn't hear them because they were speaking too softly.

They were......................................................................