K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

7 tháng 4 2016

ta có: A= 1-2 + 3-4 + 5-6 +... + 19-20

A= -1 + -1 + -1 +...+ -1

A= (-1).20

A= -20

vậy A = -20

7 tháng 4 2016

A=(1-2)+(3-4)+(5-6)+....+(19-20)

A=(-1)+(-1)+(-1)+....+(-1)

A=(-1).10

A= - 10

21 tháng 1 2018

1.If I could travel back to the 19th century, I would meet my grandparents.

2. If I get a good mark in my test, my parent will give me a small gift.

3. If I have some free time this weekend, I will go to the park for a walk.

4. If I saw a ghost at night, I would scream loudly and run as fast as possible.

5. If we cycle more, we will make air pollution less serious.

6. If I were a superhero, I would put all cruel people into prison.

1.what will you do if you (win) …………. A big price 2- I would have visited you if I (have)..... 3-If you don't work hard, you (not pass) What will you do if you (win). a big price? .time. 4-Joan would buy that car if she (have)..... 5- If he plays well, he (be) will... got into the team. ..money. 6-Jack would have got good mark if he (do)............. ..homework 7-If you (not stop )................. ...borrowing money, you'll be in trouble. 8-If John had finished the work on time,...
Đọc tiếp

1.what will you do if you (win) …………. A big price 2- I would have visited you if I (have)..... 3-If you don't work hard, you (not pass) What will you do if you (win). a big price? .time. 4-Joan would buy that car if she (have)..... 5- If he plays well, he (be) will... got into the team. ..money. 6-Jack would have got good mark if he (do)............. ..homework 7-If you (not stop )................. ...borrowing money, you'll be in trouble. 8-If John had finished the work on time, he (get)..... ...award. 9- If John (try).... 10- If he (eat).. he can do better. .all that, he'll be ill. 11- If she (be). rich, she could give us some money. 12- You will be late if you (not hurry)....... 13- If he were paid higher salary, he (not think) ............about another career. 14-If you had invited Jack, he (come).......... 15- If he (get).... one more mark,he would have passed the exam. 16- We wouldn't do like that if we (be)..... 17- If he had eaten some thing, he (not be ).. .you. ..tired. 18-If it rains, we (stay)........... ...at home. 19- If you came earlier, you (catch).. the train. 20-1 (buy)............ .that book if I had enough money. 21- What would happen if your parents( not give).. ..you any money? 22-If we have a holiday, we (go) ......to the beach. 23-Mark (not be)............. ...injured if he hadn't been drunk. 24- The baby (wake).. ..up if you spoke louder. 25- If I (know)...... ..his address, I would have visited him. 26-Your parents will be happy if you (get)..... ...good marks. the test. 27-If you had told Mark the answer, he (pass) ..a teacher? 28-What would you do if you (be)...... 29-1 (find)..... the house easily if he had given me the correct address. ...out. 30-If the sun hadn't been shining, we (not go )............... ...back? 31- What will happen if your parents (come) ............ 32-If we have enough money, we (go)... ..to the beach. ...too fast. 33-Mark wouldn't have been injured if he (not drive) 34- The baby will wake up if you (speak).............. louder.

1
31 tháng 3 2023

đề lộn xộn quá, bạn xem lại nhé, câu bị ngắt tùm lum :D

11 tháng 11 2023

1. If I see him, I will give him a lift.

2. The table will collapse if you stand on it.
3. If he eats all that, he will be ill.
4. If I find your passport, I will telephone you at once.
5. The police will arrest him if they catch him.
6. If he reads in bad light, he will ruin his eyes.
7. Someone will steal your car if you leave it unlocked.
8. What will happen if my parachute doesn't open?
9. If he washes my car, I'll give him £10.
10. If she needs a radio, she can borrow mine.

11 tháng 11 2023

1 If I see him I (give)will give him a lift.
2 The table will collapse if you (stand)stand on it.
3 If he (eat) eats all that he will be ill.
4 If I find your passport I (telephone) will telephone you at once.
5 The police (arrest)will arrest him if they catch him.
6 If he (read) reads in bad light he will ruin his eyes.
7 Someone (steal)will steal your car if you leave it unlocked.
8 What will happen if my parachute (not open)doesn't open?
9 If he (wash)washes my car I'll give him £10.
10 If she (need) needs a radio she can borrow mine.

1. Father said, “The taxi is coming now. Is everyone ready?”2. Helen said, ‘I think I’ll have to find a better job. I can’t make both ends meet”.3. ‘You have broken 2 of my glasses, boy” said the old man.4. “I will punish you if you don’t pay attention to the lesson, pupils” said the teacher (threaten)5. “Will you have a drink?” he said (invite)6. “No, we won’t go with him next Friday’ they said (refuse)7. “I am sorry. I’ve made the house untidy” said the girl. (apologize)8. ‘Do come and enjoy...
Đọc tiếp

1. Father said, “The taxi is coming now. Is everyone ready?”
2. Helen said, ‘I think I’ll have to find a better job. I can’t make both ends meet”.
3. ‘You have broken 2 of my glasses, boy” said the old man.
4. “I will punish you if you don’t pay attention to the lesson, pupils” said the teacher (threaten)
5. “Will you have a drink?” he said (invite)
6. “No, we won’t go with him next Friday’ they said (refuse)
7. “I am sorry. I’ve made the house untidy” said the girl. (apologize)
8. ‘Do come and enjoy tea with my family” she said (invite)
9. “Would you like me to look after the house for you?” He said (offer)
10. “Why don’t we come to visit our teacher today?” he said (suggest)
11. “Will you keep your mouth shut? He said (order)
12. ‘Don’t talk anymore.” He said (command)
13. “Don’t swim so far” He said to me (warn somebody to do something)

2
3 tháng 7 2021

1. Father asked if everyone was ready as the taxi was coming then

2. Helen said she thought she would have to find a better job because she couldn't make both ends meet

3. The old man said that the boy had broken 2 of his glasses

4. The teacher threatened to punish the pupils if they didn't pay attention to the lesson

5. He invited me to have a drink

6. They refused to go with him the next Friday

7. The girl apologized for having made the house untidy

8. She invited me to come and enjoy tea with her family

9. He offered to look after the house for me

10. He suggested coming to visit their teacher that day

11. He ordered me to keep my mouth shut

12. He commanded not to talk anymore

13. He warned me not to swim so far

3 tháng 7 2021

 

1. Father said, “The taxi is coming now. Is everyone ready?”

father said that the taxi was coming then and asked if everyone was ready

2. Helen said, ‘I think I’ll have to find a better job. I can’t make both ends meet”.

Helen said that she thought she would have to find a better job, she couldn't make both ends meet.

3. ‘You have broken 2 of my glasses, boy” said the old man.

The old man accused the boy of having broken 2 of his glasses.
4. “I will punish you if you don’t pay attention to the lesson, pupils” said the teacher (threaten)

The teacher threatened to punish the pupils if they didn’t pay attention to the lesson,
5. “Will you have a drink?” he said (invite)

He invited me to have a drink
6. “No, we won’t go with him next Friday’ they said (refuse)

They refused to go with him the following Friday.
7. “I am sorry. I’ve made the house untidy” said the girl. (apologize)

the girl apologized for making the house untidy

8. ‘Do come and enjoy tea with my family” she said (invite)

She invited me to come and enjoy tea with her family
9. “Would you like me to look after the house for you?” He said (offer)

he offered to look after the house for me

10. “Why don’t we come to visit our teacher today?” he said (suggest)

He suggested coming to visit their teacher that day
11. “Will you keep your mouth shut? He said (order)

he ordered me to keep my mouth shut

12. ‘Don’t talk anymore.” He said (command)

He commanded us not to talk anymore
13. “Don’t swim so far” He said to me (warn somebody to do something)

 He warned me not to swim so far

    

17 tháng 7 2017

1study hard and you will pass the exam

if you study hard, you will pass the exam

2. be careful or you'll cut yourself with that knife.

if you are not careful, you'll cut yourself with that knife.

3. save some money or you won't able to bvuy the house

if you don't save some money, you won't able to buy the house

4. ask him first and he will offter to help

if you ask him first, he will offter to help

5. be calm or you'll make a wrong decision

if you aren't calm, you'll make a wrong decision

6. you sing well and everyone will clap their hands

if you sing well, everyone will clap their hands

17 tháng 7 2017

1study hard and you will pass the exam

if....you don't study hard, you won't pass the exam

2. be careful or you'll cut yourself with that knife.

if....you aren't careful, you will cut yourself with that knife........

3. save some money or you won't able to bvuy the house

if.....you don't save some money , you won't be able to buy that house.....

4. ask him first and he will offter to help

if.....you ask him first, he will offer to help........

5. be calm or you'll make a wrong decision

if.....you aren't clam, you'll make a wrong decision.......

6. you sing well and everyone will clap their hands

if.....you sing well, everyone will clap their hands..........

12 tháng 4 2020

1e 2h 3d 4a 5g 6b 7f 8c

I . Rewrite the sentence with '' If '' 1. Be good or your parents will be very unhappy => If ............................................................. 2. Do it carefully or you'll feel sorry afterwards => If ............................................................... 3. Study hard and you will pass the exam => If .............................................................. 4. Be careful or you'll cut yourself with that knife => If...
Đọc tiếp

I . Rewrite the sentence with '' If ''

1. Be good or your parents will be very unhappy

=> If .............................................................

2. Do it carefully or you'll feel sorry afterwards

=> If ...............................................................

3. Study hard and you will pass the exam

=> If ..............................................................

4. Be careful or you'll cut yourself with that knife

=> If ..................................................................

5. Save some money or you won't able to buy the house

=> If ...................................................................

6. Ask him first and he will ofter to help

=> If ....................................................................

7. Be calm or you'll make a wrong decision

=> If ............................................................

8. You sing well and everyone will clap their hands

=> If ..............................................................

2
12 tháng 11 2020

1. If you aren't good, your parents will be very unhappy

2. If you don't do it carefully, you'll feel sorry afterwards

3. If you study hard, you will pass the exam

4. If you aren't careful, you'll cut yourself with that knife

5. If you save some money, you will able to buy that house

6. If you ask him first, he will offer to help

7. If you aren't calm, you'll make a wrong decision

8. If you sing well, everyone will clap their hands

2- Điền vào chõ trống với dạng đúng của động từ trong ngoặc 1. If I .......your book, I .....it to you (find/ give) 2. She......us if she ......any proplems. (phone/ have) 3. If you .......to the party , I.......with you (go/come) 4. She.....very happy if she ........that new job (not be / not get) 5. If you .....with us, you.......a good time (come/ have) 6. We........you if we ..........the time (help/have) 7. I........for you if you ..........late (not wait/ be) 8....
Đọc tiếp

2- Điền vào chõ trống với dạng đúng của động từ trong ngoặc
1. If I .......your book, I .....it to you (find/ give)
2. She......us if she ......any proplems. (phone/ have)
3. If you .......to the party , I.......with you (go/come)
4. She.....very happy if she ........that new job (not be / not get)
5. If you .....with us, you.......a good time (come/ have)
6. We........you if we ..........the time (help/have)
7. I........for you if you ..........late (not wait/ be)
8. We......camping if it..... (go/ not rain)
9. If there ........a good program on Tv tonight, I.......it (be / watch)
10. We.........swimming if it..........a nice day tomorrow (go/be)

Bài 3: kết hợp các câu sau dùng mệnh đề IF
1. Maybe it will rain tomorrow night. I will stay at home.
2. Maybe it will be hot tomorrow . I will go swimming
3. Maybe Adam will have enough time. He will finish his homework
4. Maybe I won't get a letter tomorrow . I will call my aunt
5. We will go on a picnic. Maybe the weather will be nice tomorrow

2
22 tháng 3 2019

2- Điền vào chõ trống với dạng đúng của động từ trong ngoặc
1. If I found your book, I would given it to you (find/ give)
2. She will phone us if she has any problems. (phone/ have)
3. If you go to the party , I will come with you (go/come)
4. She wouldn't very happy if she didn't get that new job (not be / not get)
5. If you come with us, you will have a good time (come/ have)
6. We ​will help you if we have the time (help/have)
7. I won't wait for you if you are late (not wait/ be)
8. We will go camping if it doesn't rain (go/ not rain)
9. If there is a good program on Tv tonight, I will watch it (be / watch)
10. We will go swimming if it is a nice day tomorrow (go/be)

15 tháng 5 2022

1 found / would give

2 will phone / has

3 go / will come

4 wouldn't / didn't get

5 come / will have

6 will help / have 

7 won't wait / are 

8 will go / doesn't rain

9 is / will watch

10 will go / is

22 tháng 7 2017

1. If you take my advice, you .............will be.......... (be) happy.
2. What would you do if you ...........were............. (be) me?
3. If you .............lend........... (lend) me some books I will give them back in two weeks.
4. I ...............would have sent......... (send) her a letter if I had found her address.
5. She .............would not have stolen ........... (not/steal) the bread if she hadn't been hungry.
6. If she ..............comes.......... (come) here I will tell her about the film.
7. I will be unhappy if you ..............leave.......... (leave) me.
8. If you hadn't been so crazy you ..........would not have bought.............. (not/buy) this expensive house.
9. If the sun .............shines........... (shine) I will go to the beach.
10. If I ..............won.......... (win) the lottery I would leave my country.

22 tháng 7 2017

1. If you take my advice, you ..........will be.............. (be) happy.
2. What would you do if you ...........were............. (be) me?
3. If you ............lend............ (lend) me some books I will give them back in two weeks.
4. I ...........would have sent............. (send) her a letter if I had found her address.
5. She ...........wouldn't have stolen............. (not/steal) the bread if she hadn't been hungry.
6. If she ...........comes............. (come) here I will tell her about the film.
7. I will be unhappy if you ...........leave............. (leave) me.
8. If you hadn't been so crazy you .............wouldn't have bought........... (not/buy) this expensive house.
9. If the sun ..........shines.............. (shine) I will go to the beach.
10. If I ...........won............. (win) the lottery I would leave my country.