B1:Cho tam giác Abc có BC=7,5 cm;CA=4,5 cm;AB=6 cm.Tam giacs Abc là tam giác j?Tính đường cao AH của tam giác abc,biết HB=4,8 cm

B2:Cho hình vuông ABCD có độ dài cạnh bằng 4 cm,1 đường thẳng đi qua C cắt cạnh AD tại K.Biết CK=5 cm.Tính chiều cao BH của tam giác BKC

B3:Cho tam giác Abc đều có cạnh là 6 cm

a)Kẻ đường cao AH.Tính AH?

b)Tính diện tích tam giác Abc?

Ex1:Change into passive voice using the Past Simple Tense Form: S+was/were+V-PII+(by+0)

1.Nam broke the window last night

->The window......

2.They built that hospital last month

->That hospital......

3.I took the books to the library

->The books.......

4.The shoemakers made the shoes

->The shoes......

5.Did you write these letters?

->...........these letters...........?

6.The wind blew two big trees down

->Two big trees...........

7.They gave me a new book yesterday

->A new book............../I.........

8.People proved him wrong

->He............

9.A violent storm destroyed the city last week

->The city......

10.Did your daughter eat that pie?

->...........that pie...............?

11.What play did Shakespeare write?

->What play..........

12.Who wrote this novel?

->Who.......?

By thom...........?

13.Last night,my grandmother told us a very interesting story

->Last night,we...................

14.Her husband didn't love her

->She............

Ex2:Change into passive voice using the Past Continuous Tense:Form: S+was/were+being+PII+(by+0)

1.Waiters and waitresses were serving customers

->Customers...................

2.Was Mary helping her mother in the kitchen at that time

->Was her mother............

3.The president was signing those papers.

->Those papers....................

4.What were you doing at this time yesterday?

->What was...................

5.The head teacher was making the announcement

->The announcement..........

6.Someone was cleaning the windows while i was there

->The window..........

7.They were representing the athletes to the spectators when we came.

->The athletes..............

8.Two horses were pulling the farmer's wagon

->The farmer's wagon.............

9.Someone was making the coffee when i walked in to the kitchen

->The coffee...............

Ex3:Change into passive voice using the Present Perfect Tense.Form: S+have/has+been+V-PII+(by+0)

1.No one has opened this window for ages

->This window.........

2.No one has ever asked me that question before

->I

3.They haven't done any thing since he left

->Nothing..............

4.A doctor has just examined John

->John.................

5.They have not used this machine for ages

->This machine..............

6.They have paid the doctor a lot of money

->The doctor.............

7.Who has written that novel?

->Who..........

->By whom..................

8.Have several people seen the accident?

->Has.............

9.John has broken my watch since this morning

->My watch.............

Ex4:Change into passive voice using the Future Simple Tense:Form: S+will be+VpII+(by+0)

1.We will publish the library card soon

->The library card.........

2.His family will see him off at the airport

->He.............

3.Somebody will tell you where to go

->You............

4.His sister will make a big birthday cake tomorrow

->A big birthday cake.........

5.Someone will clean the room

->The room...................

6.They will ask you several questions

->You.............

7.Someone will read you another chapter next time

->You.................

8.Ba is going to help his brother to do his homework tonight

->His brother...........

9.I'm going to buy a new house next month

->A new.................

Ex5:Change into passive using the Modal verbs.Form: S+Md(can,may,will,ought to,have to,must,...)+be+VpII+(by+0)

1.We will have to repair our car soon

->Our car...............

2.Passengers shouldn't throw away their tickets

->Their tickets...........

3.Students may not use dictionaries in the examination

->Dictionaries.............

4.A machine could do this work much more easier

->This work.............

5.They can not hold the meeting in this room

->The meeting..............

6.People ought to tell us how much they expected us

->We............

7.You must keep your room tidy

->Your room...........

8.He shouldn't do that silly thing again

->That silly thing...........

9.We can solve the problem

->The problem..................

Ex1:Find one choice in a,b,c,d that best complete the sentences

1.His birthday is on the .......................of May

a.three b.third c.thirteen d.thirty

2.Hoa is a new student.She doesn't have.....................friends

a.much b.many c.a lot of d.any

3.It is an awful restaurant.It is the...................restaurant in the city

a.good b.bad c.better d.the worst

4.Lan enjoys....................badminton very much

a.play b.plays c.playing d.to play

5.The magazines are............the rack.....................the middle of the room

a.in/in b.at/on c.in/at d.on/in

Ex2:Use the correct form of the verbs in brackets

1.Would you like (see) a movie tonight?

2.How often Mai(practice) the piano in the club?

She(go) there twice a week

3.Next Monday is Hoa's birthday.She(invite) some friends for her birthday party

Ex3:Complete each sentence with one word in the box

models;Physics;excited;at the back of;essays

1.The English books are..............the library

2.My favourite subject is.......................

3.The children look ............at recess

4.My brother likes making............of things such as cars or plances

Ex4:Give the correct form of the words in brackets

1.Minh usually(study)in the library after school

2.Nam never plays games.He is not very(sport)

3.We (see) a movie tomorrow

Ex5:Write the second sentence so that it has the same meaning as the first

1.It's seven thirty

->It's half..................

2.Which subject do you like best?

->What is...........?

3.Why don't we go to the movie?

->What about............?

Ex6:Use the given words to make the meaningful sentences

1.She/be/never/late/school

2.They/be/interested/Computer Science

Ex7:What do you do after school?Write five sentence,using the sentences,using the given words

1.After school/study/library

->

2.help/parents/do/housework

->

3.listen/music/friend

->

4.go/art club

->

5.learn/play/guitar

->

B1:Tính

a)(-2/3+3/7):4/5+(-1/3+4/7):4/5

b)5/9:(1/11-5/22)+5/9:(1/15-2/3)

c)4^2.4^3/4^10

d)(0,6)^5/(0,2)^6

e)2^7.9^3/6^5.8^2

g)6^3+3.6^2+3^3/-13

h)(3/7+1/2)^2

i)(3/4-5/6)^2

k)5^4.20^44/25^5.4^5

l)(-10/3)^5.(-6/5)^4

f)(1+2/3-1/4).(4/5-3/4)^2

m)2:(1/2-2/3)^3

n)9.9.(-1/3)^3+1/3

y)(4.2^5):(2^3.1/16)

Ex1:Choose the words that has a stressed syllable from the others

1.A.excuse

B.personal

C.telephone

D.number

2.A.movie

B.tomorrow

C.theater

D.moment

3.A.answer

B.ordinal

C.eleven

D.party

4.A.finish

B.birthday

C.nervous

D.complete

5.A.person

B.unhappy

C.impress

D.appliance

B1:Tìm x,biết

a)x-3/x+5=5/7

b)7/x-1=x+1/9

c)x+4/20=5/x+4

B2:

a)Cho tỉ lệ thức: a/b=c/d.Chứng minh: 2a+5b/2a-5b=2c+5d/2c-5d

b)Cho a+5/a-5=b+6/b-6.Chứng minh: a/b=5/6

B3:Tìm x,y,z biết:

a)x/y=10/9;y/z=3/4 và x-y-z=78

b)5x=8y=20z và x-y-3=z

B4:Một khu vườn hình chữ nhật có diện tích = 300 m vuông.Hai cạnh tỉ lệ với 3 và 4.Tính chiều dài và chiều rộng khu vườn

B5: 4 lớp 7a,b,c,d đi lao động trồng cây.Số cây trồng được của 4 lớp lần lượt tỉ lệ với 3,4,5,6 và lớp 7a trồng ít hơn 7b 5 cây.Tính số cây trồng của mỗi lớp

B6.Tính:

a) (-2/3+3/7):4/5+(-1/3+4/7):4/5

b)5^4.20^4/25^5.4^5

c) (4.2^5):(2^3.1/16)

d)9.9.(-1/3)^3+1/3

B7:Tìm x biết

a) (3x-1/4).(x+1/2)=0

Ex1:Give the correct tenses of verbs in brackets

1.What your father usually(do)..........in the evenings?

He usually(watch).................tv

2.He(be)............out at the moment but he(be)...............back at about seven o'clock

3.I can (see) ...............the children .They(play)................in the yard

4.Would you like(listen)...............to music?

No,thanks.I like(read)....................books

Ex1:sắp xếp cho đúng:

1.the way/show/Could/you/me/to/the market?

2.often/Ba/comics/reads/his/in/free time

3.during/The school yard/noisy/is/recess

Ex2:rewrite these sentence

1.When is your birthday?

What..................

2.What about going to the cafeteria?

Let's..........

3.Why don't you eat out with us?

Would you like............

4.Let's come to my house after school

What about.............

5.Mr.Tam drinks more coffee than Mr.Lam

Mr Lam............

6.When is your birthday?

What's..............

Ex2:Put a suitable word in each gap to finish the following sentences

1.Drink and eat ......................and play computer games less and you will feel better

2.Do you know that tortoises live...................than peole?

3.Try to eat.......................fat and do more exercise if you want to lose weight

4.My uncle's hobby is.........................old electric fans.He has a huge collection

5.It is very noisy in the club .I prefer somewhere............