Thứ Ba, 13 tháng 10, 2015

Giải sách bài tập tiếng anh 8 Unit 6 : The young pioneers club.


1 Complete the dialogues to ask for favors or to offer asistance. Use the expressions in the box.
b)
C: Can you empty waste-basket for me?
D: Of course.
C: Thanks. That's very kind of you.
c)
E: Do you need any help?
F: Yes. Could you lift my bad? It's heavy. (lift : nâng)
E: No problem.
d)
G: Let me help you.
H: Could you take this book?
G: Sure.
e)
I: It's very dark in here.
J: How can i help you?
I: Could you open the window for me?
J: Certainly.

2. Complete the senteces using the correct present simple forms of the verbs in the box.
a) ... starts... finishes.
b) ...begins ... doeasn't end.
c) ...leaves ... reaches.
d)  is opened (bị động)
e) is
f) hold
g) goes

Would you like + to V, các trường hợp khác thì ... like + V ing

3. Write full sentences, using the present simple or past simple.
b) Bao helped his friends in the orphanage play volleyball last week.
c) Hoa and her friends raise fund for the poor and sell their embroideries in the school student's shop.
d) Song always plays soccer every Sarturday afternoon, but last Saturday afternoon he played basketball.
e) The students like take care of the trees in the parks. They planted nd watered trees and flowers in Kim Dong Park last weekend.
f) Hung loves attend the class social activities. He helps the alderly and the street children every Saturday and Sunday.


4. What do they plan to do this weekend? Write the sentences using the present simple.
a) Nga visits grand parent every Sunday.
b) Hoa pratices singing every morning Sunday.
c) Nam plays soccer with school team this weekend
d) Mr. and Mrs. Tuan prepare food for children's friends on Sunday (prepare: chuẩn bị)
e) Ba goes to Huong pagoda with classmates this weekend
f) Linh helps children play games on Saturday
g) Liz writes letters to friends in the usa this weekend
h) Mai and Hung fix chairs and desks in the classroom this weekend

5. Use the -ing form of the words in the box to complete the sentences below.
a) drinking
b) smoking
c) reading
d) learning ... practicing
e) replying ... writing
f) playing
g) cooking
h) eating
i) going

Sau giới từ là Ving (in/on/at/for/... + Ving)

6. Complete the sentences using the correct form of the verbs in the box.
a) coming
b) playing
c) driving
d) swimming
e) repairing : sửa chữa
f) talking
g) sewing
h) working
i) recycling
j) practicing
k) cooking
l) running
m) learning

7. Gerund or infinitive? Complete the sentences. Use the correct form of the verbs in brackets.
a) to go
b) watching
c) doing
d) playing ...swimming
e) to do
f) collecting
g) to help
"Slow but sure" - Chậm mà chắc.
8. Fill in each gap with the correct form of a word or phrase from the box.
a. community center
b. senior center
c. funeral (2)
d. playground
e. school board
f. club
g. public library
h. park

9. Read the passage and fill in each gap with a suitable word. Circle A, B,C or D.
1.A
2.B
3.B
4.A
5.B
6.
7.C
8.
9.
10.
11.
12.
13.
14.
15.

12. Read the passage and answer the mutiple-choice questions.
a) C
b) D
c) C
d) D
e) C

Từ vựng cho bạn ( ctrl a để thấy đáp án) 
Blind: người mù
World: thế giới


Thứ Bảy, 19 tháng 9, 2015

Giải sách bài tập tiếng anh 8 Unit 5 : Study habits


1. How often do you do these things? Use the expressions in the box in your answers.
a) I have Geography twice a week.
b) I have Physical Education twice a week.
c) I have Physics twice a week.
d) I salute the colors every Monday.
e) I have Art once a week.
f) I never have Vietnamese.
g) I have English four times a week.
h) I have History twice a week.
i) I go on a picnic once a month.
j) I take a diction every day
k) I have a group activity every weekend
l) I get mark 10 once a month.
m) I play tick-tack-toe once a month.
n) I walk to school every day.
o) I never absent from school.

2. Miss Mai, a secondary school teacher, often uses the imperative to get her students of English to do things for her. What do you think she says when:
a) Sit down, please.
b) Show me your homework.
c) Shut the door.
d) Open the window.
e) Write the answers in your exercise books.
f) Don't read the text before listening to tape.
g) Don't talk during the lesson.
h) Don't read the answer keys before completing the task.

Động từ tình thái, thể khẳng định : S + should(nên) + Verb 

3.Quang's sister told Quang many things. What exactly were the words she said to Quang?
a) "Try your best at school".
b) "Finish your homework before going to the movies".
c) "You should learn harder to improve your English pronunciation".
d) "You help me with using the computer".
e) "You correct your grammatical mistakes in your homework".
f. " Can you go to the library?".
g. "Can you stop tapping your foot?"
h. "You look up new words in an English dictionary".
i. "You should take better care of your eyes".
j. "You practice speaking English".

4. How do you do these things? use the adverbs in the box in your answers.
a. I swim very well.
b. I learn Geography badly.
c. I work on Math well.
d. I can sing very badly.
e. I write in English hard.
f. I learnt English very well in Grade 7.
g. I cook very well.
h. I study in elementary school very well.
i. I ride the bicycle very well.
j. I do the last English test very fast.
"What must be, must be" - Cái gì tới sẽ tới.
5. You can add -er or -or to some verb to make new words. Now make similar words by adding -er or -or to the following words. Than complete the sentences with one word you have made.
worker - visitor
reader - writer
teacher - winner
reporter - sender
receiver - loser
a. Teacher ...
b. ... receiver ...sender
c. ... writer ... reader
d. ... visitor ...
e. A reporter ...
f. Worker and winner ...

6. What should these people do? You may use the verbs in the box.
a. Quang should improve marks in Math next semester.
b. She should eat less cake.
c. Binh should go to bed early.
d. Ann should save money.
e. Thao should go to hospital.

Subject(viết tắt S) là chủ ngữ gồm I/He/She/They/We/Lan/My mother

7. Read the sentences Ba said to Khanh yesterday and change them into reported speech.
a. Ba said Khanh should change the way he learned English.
b. Ba asked Khanh to lend him his history book.
c. Ba asked Khanh to borrow her physics paper to check the answers.
d. ba begged Khanh to help him with that exercise because Ba was hopeless at Vietnamese.
e. Ba advised Khanh to learn the phonetic symbols to improve his english pronunciation.
f. Ba asked Khanh to show him how to work that work.

8. Fill in each of the gaps in the passage below with one suitable word from the box.
1. school
2. pronunciation : phát âm
3. improve
4. after
5. took
6. bookcase
7. dictionary
8. should
9. year
10. held

9. Write complete sentences from the following sets of words and phrases. You can make all the necessary and additions.
a. I proud of my sister because she always study well.
b. Yesterday teacher say I should work harder to improve my English grammar.
c. Jenny has Math four times a week.
d. We received report a go.
e. Mother tell me that i spend more time in History.
f. Teacher said she need see a doctor.
g. My friend tell me that i visit him next weekend
h. Last semester she got good grades in Science but chemistry results poor.
i. Grandmother tell him that he write her once.
j. His mother very sad because he study badly every semester.

10. Change the following sentences into reported speech.
a. She said she need to learn by beart 15 words before she went to school.
b. Linh's teacher asked Linh how to pronounce this word.
c. Hoang said Quyen she need to practice writing more letters.
d. Mrs. Giang said her students listening to conversations in English is very important.
e. Minh asked teacher which dictionary he should buy.
f. Mr. Thanh said his class mistakes help you to learn.
g. Allan said learning a foreign language is learning how to twist your tongue again
h. Thomas said us this is a CD that can help we improve our pronunciation.

11. Fill in each gap with a word from the box. These are more words than you need. The first one has been done for you.
a. opportunities
b. practice : luyện tập
c. ready
d. habits
e. patient
f. errors
g. attention
h. opportunities
i. understand
j. feel

12. Read the passage and answer the multiple-choice questions.
a. C
b. D
c. C
d. A
e. B

Từ vựng cho bạn (Ctrl A để thấy đáp án)
Habits: Nhừng thói quen
Practice: Luyện tập

Thứ Sáu, 17 tháng 7, 2015

Giải sách bài tập tiếng anh 8 Unit 4 : Our past


1. Write the past simple form of the verbs.
a) do - did
b) go - went
c) tell - told
d) buy - bought
e) give - gave
f) spend - spent
g) fly - flew
h) drink - drank
i) swim - swam
j) sleep - slept

Phủ định quá khứ : S + didn't + V (nguyên mẫu)

2. Put one of the verbs in the box in the right form in each sentence.
a) taught
b) had
c) ate : ăn
d) went
e) took
f) did
g) spent
h) gave
i) got up
j) was

3. Complete the dialogues using the past simple.
a) How did you go to school ?
b) Did you get up early yesterday morning?
c) I went to Ha Long Bay
d) What did you buy in the supermarket?
e) I drank some CocaCola,
f) How did you sleep last night?
g) She told me "The Last Leaf " , an interesting short story. (The Last Leaf : chiếc lá cuối cùng )
"Wait the see" - Thời gian sẽ trả lời
4. Match a line in (I) with a line in (II). Complete the line in (II) with a subject and used to.
(I)
a) G
b) C
c) D
d) A
e) B
f) F
g) E
(II)
A. He used to fly a T.U 134.
B. He used to go everywhere by bicycle.
C. She used to go swimming in the morning in summer.
D. They used to visit the beautiful places in Ha Noi and Ha Long.
E. She used to a famous singer. (famous : nổi tiếng)
F. It used to follow me everywhere.

5. Answer the question about you and your relatives.
a) Yes, I used to cry so much every night when i was a baby.
b) Yes, I used to follow my mom to the market when i was a kid.
c) I used to go Nha Trang in summer.
d) I used to go swimming, play soccer,... in the summer.
e) My grandparents used to live in Ha Tinh.
f) Yes, My father used to smoke when he was young (Now, he until smoke)
g) Yes, My mom used to help my greandmother with housework when she was a child.
h) No, My grandmother not used to tell me folktales.
i) My parents used to go to school by bice.

6. Look at the pictures. Write seven sentences about what Long used to do when he was a child.
a) Long used to fly a kite when he was a child (fly a kite : thả diều)
b) Long used to go swimming in pool when he was a child
c) Long used to clim a tree when he was a child
d) Long used to listen to music when he was a child
e) Long used to go fishing when he was a child
f) Long used to get up lately when he was a child
g) Long used to fail test English when he was a child

on : dùng cho các ngày ( on + sunday/15 April/21 July 1996)

7. Make up sentecces using prepositions of time: in, at, on, before, after, between.
a) I usually go to school at 6 o'clock.
b) We have English lessons on Monday, Wednesday and Friday.
c) He will be back between 4.15 and 4.30
d) I will phone you on Tuesday morning at about 10 o'clock.
e) My dad went to work after having breakfast.
f) Everyone is busy on Tet holiday.
g) I usually listen to music on Sunday morning.
h) We often watch The Morning News on TV before having breakfast.

8.Fill in the gap with your own information.
a)...seven year old.
b)...about twenty ...
c)...ten...
d)... a baby...
e)...five years...
Now answer these question about the past.
a) When i started Grade 6, I was 12 years old.
b) My teacher started teaching 11 years ago.
c) I went to the kindergarten in 2000 (kingdergarten : mẫu giáo )
d) I was ten years old when i read my first novel.
e) My school was build in five years.

9. Read the passage and fill in each gap with the correct form of a verb from the box. You can use a verb more than once.
1-exploring
2-wrote
3-gave
4-helped
5-thought
6-got
7-was
8-grew up
9-stay
10-behave : hành vi
11-got
12-spent
13-had
14- went
15-educate

10. Read the passage and answer the multiple-choice question.
a) B
b) B
c) C
d) A
e) B

Từ vựng cho bạn ( Ctrl A để thấy đáp án)
Leaf : chiếc lá
Holiday: kỳ nghỉ

Giải sách bài tập tiếng anh 8 Unit 5 : Study habits

Thứ Tư, 8 tháng 7, 2015

Công thức hóa học quan trọng.


1.Số mol

n: Số mol 
m: Khối lượng 
M: Nguyên tử khối/ Khối lượng mol
V: Thể tích chất khí
Vdd : Thể tích dung dịch
CM : Nồng độ mol

2. Nồng độ %
C% : Nồng độ % (luôn bé hơn 100%)
mct: khối lượng chất tan ( mct=n.M)
mdd: Khối lượng dung dịch ( thường giả thiết cho
hoặc)

3. Hiệu suất



H : Hiệu suất (<100%)
mtt : Khối lượng thực tế (thường giả thiết cho)
mlt : Khối lượng lý thuyết (mlt = n.M)

4.Tìm công thức hợp chất.
Gọi công thức hợp chất là AxBy
Hay


5.Tìm chất dư.
Khi ta thấy giả thiết cho 1 phương trình mà có thể tính đước 2 số mol của chất tham gia thì bài toán thuộc dạng tìm chất dư.
Phương trình :
Vậy ta đặt số mol chất hết (B) vào phương trình để tính.

Hóa học 9 : Bài 1 : Tính chất hóa học của oxit . Khái quát về sự phân loại oxit.


1. LÝ THUYẾT


(Chỉ duy nhất 5 chất   tác dụng với  tạo thành Bazo )








(Chỉ 5 Bazo kiềm dưới mới tác dụng Oxit Axit)

Ngoài ra: Oxit lưỡng tính đều tác dụng với Axit và Bazo, Oxit trung tính không tác dụng với nước, axit, bazo.

2.HƯỚNG DẪN BÀI TẬP
SÁCH GIÁO KHOA

Bài 1. Oxit Bazo : CaO; Fe2O3 Oxit Axit : SO3
a) CaO; SO3  (chất còn lại không phải 5 Oxit Bazo tác dụng với nước)
b)CaO; Fe2O3 (chất còn lại là Oxit Axit)
c)SO3 (2 chất còn lại là Oxit Bazo)

Bài 2. 4 Phương trình.
H2O + K2O ; H2O + CO2 ; KOH + CO2 ; K2O + CO2

Bài 3.a)ZnO b)SO3 c)SO2 d)CaO e)CO2

Bài 4.
a)CO2 ; SO2
b)Na2O; CaO
c)Na2O; CaO; CuO
d)CO2; SO2

Bài 5. Hỗn hợp CO2 và O2 . Để thu được khí O2 ta cần cho nước vào tạo thành Axit Cacbonic , còn lại là khí O2.

Bài 6. Đây là dạng bài 1 phương trình mà có thể tính đước số mol > Dạng toán tìm chất dư.
Giả thiết : 1,6g đồng > nCu 
Giả thiết : 100g dd H2SO4 20% > mH2SO4 > nH2SO4

Từ nCu và nH2SO4 > H2SO4 dư

Vậy dung dịch sau phản ứng có CuSO4 và H2SO4 dư > nCuSO4 và nH2SO4 dư >mCuSO4 và mH2SO4 dư.
mdd=mCu + mddH2SO4 = 101,6 g > C%CuSO4=3,15% và C%H2SO4 dư=17,8%

Thứ Ba, 2 tháng 6, 2015

Giải sách bài tập tiếng anh 8 Unit 3 : At Home

1. Complete the following sentences with have to or must.
a) have to
b) must
c) have to
d) must
e) must
f) must
g) ...does...have to
    ...have to...
h) have to
i) have to

2. You are giving advice to a friend. Use ought to or ought not to.
a) You ought to go to the dentist.
b) You ought to learn a few Chinese words before he goes.
c) You ought not to ride a bicycle so fast.
d) You ought to put on warn clothes.
e) You ought to stay at home.
f) You ought not to watching TV.
g) You ought not to stop smoking. (smoking : hút thuốc)
h) You ought to improve your English before you leaves.

Đại từ phản thân : I -> myself (chính tôi )

3. Complete the following sentences, using myself, yourself, ...with the verbs in the box.
a)...repaired...my self.
b) look after ourselves
c) enjoyed themselves...
d) ...clean...yourself ?
e) ...drew...himself.
f) look at itself
g) ...made...herself.
"You can't make an omelette without breaking eggs" - Bạn không thể chiên trứng mà không đập trứng.
=> Muốn ăn thì lăn vào bếp.
4. Write complete sentences with the verbs in the box. Use reflexive pronouns only where necessary.
a) feel
b) dried himself
c) met
d) enjoy ourselves
e) concentrate myself
f) teach
g) wash himself

5.Match the question in (I) with the appropriate answer in (II) using Why - Because.
a) D
b) G
c) C
d) A
e) F
f) H
g) B
h) E

Đại từ phản thân : You -> yourself (chính bạn)

6. Read the following situations and then make up question and answer them.
a) Why didn't Mrs. Brown get any milk?
Because the shops were closed.
b) Why did David go in his place?
Because the headmaster was ill.
c) Why didn't they go to the beach. (beach : bãi biển)
Because it rained all day and night.
d) Why did Mr. Brown miss the train to Leeds.
Because his car broke down on the way to the railway station.
e) Why did Bob get lost?
Because he didn't have a city map.

7. Crossword.
D3 in
A1 between
D2 next to
D1 behind
A4 on
A3 under :phía dưới
A2 in front of

8. Must, mustn't, have to, not have to.
a) not have to
b) must
c) must
d) have to
e) have to
f) not have to

9. Fill in each gap with one word from the box . There are more words than you need to fill in all the gaps.
a) vacuum cleaner
b) washing machine
c) bathtub
d) cupboard
e) microwave oven
f) water heater
g) hairdryer

10.Read the passage and answer the multiple-choice questions.
a) C
b) C
c) B
d) A
e) A

Từ mới cho bạn. (Ctrl A để thấy đáp án)
Washing machine: máy rửa chén
Yourself : chính bạn

Giải sách giáo khoa tiếng anh 8 Unit 3 : At Home

Thứ Bảy, 1 tháng 11, 2014

HÌNH ẢNH MINH HỌA BÀI TẬP VẬT LÝ 8 - LỰC ĐẨY ACSIMET














Tải file Power point tại đây.