cho tam giac abc vs trung tuyen AM. tu mot diem thuoc canh bc ke duong thang // vs AM cat Ab o e va AC o F , chung minh

\(\frac{DE}{MA}\)=\(\frac{BD}{BM}\)va \(\frac{DF}{MA}\)=\(\frac{DC}{MC}\)

tai sao khi tiem thuoc nen tiem vao tinh mach

if i ......., i would express my feelings

a .were asked

b .would ask

c. had been asked

d, asked

2 i am very thin . i think, if i .............. smoking , i might get fat

a stop b.had stopped c will stop d stopped

3 if i .................. that yesterday , i .......................them

a, had discovered / would inform

b, had discovered / would have informed

c, had discovered / could inform

d, discovered / can inform

i think he is not at home , if he ,,,,,,,,,,,,,,,,in , he ...............the phone

a. was/answered

b. were/ would answer

c, were / would have answered

d, had been /would have answered

if Colmbus .......money from Qeen Isabella , he ..............across the Atlantic

a. do not receive /could not sail

b had not received/might not have sailed

c did not receive /might not have sailed

d would not receive /might not sail

if anybody ............a questions, please ask me after class

a, had b, have c, c has d, will have

viet lai cau

11 i didn't eat lunch , i feel hungry now

=>if i................................................................

12 it hadn't rained , we would have a better crop

=>but for ..................................................................

13 i only come if they invite me

=> unless .......................................................................

13 he didn't revise all his lessons , he failed the exam

=>if he ...............................................................................

14 his sister sent her money , so he continued to study

=>but for .......................................................................

15 the park is over there , only 5 minutes walk

=>if you walk ........................................................

16 in case it rain , we'll stay at home

=> if it .................................................

17 let me give you my advice . you should cut down on smoking right now

=> if i ......................................................................................................................

18leave me alone or i'll call the police

=>unless ............................................................

19 if you arrive at the office earlier than i do , please turn on the air -conditioner

=> should ...................................................................................................................

\20 the children don't go to school in the snowy weather

=>if it .................................................................................

21` he died so young otherwise , he would be a famous musician by now

=> had ................................................................................................................

22 you must tell me the whole truth or i won't help you

=> unless ...........................................................................

23 the car breaks down so often because you don't take good care of it

=> were i ....................................................................................................

* viet lai cau

1 he can not go out because he has to study for his exam

=> if .........................................................................................

2 she is lazy so she can not pass the exam

=> if ...............................................................................................

3 he will pay me tonight , i will have enough money to buy a car

=> if ...........................................................................................

4 he smokes too much , that is why he can not get rid of his cough

=>if .................................................................................................

5 she is very shy , so she does not enjoy the pary

=>if .............................................................................

6 i will get a work permit . i will stay for another month

=>if ........................................................................................

7 he does not take any exercises. he is so nhealhy

=>if ..........................................................................

8 we can not get the ticket because i don not have the right change

=>if ........................................................................................................

9 study hard or you won't pass the exam

=>if ..............................................................

10 don't be impatient or you will make mistakes

=>if ............................................................................

bài tập về câu điều kiện loại 1,2,3

`1 if i ( have )............. time , i will write to him

2 if itt is coll , i ( need ) ............................a heavier coat 3. what are you going to do if you ( have) .......................... a holiday?

5 if I meet Helen , I ( give )..........................................her your message

6 if flowers don't get any water , they (die).....................................................

7 if I ( get ) ............................. a headache , i usually take some aspirins

8 i will go to the party unless it ( rain)..................................................

9 she will buy the car as long as it (not be).............................. too expensive

10 everything ( be ) ............................provided yo tell the truth

11 if he (come)...................., please tell him that i will be back in a few mintes

12 don't come if they (not call )......................you

13 if you (need )........................., why don't you tell me?

14 suppose you (win).........................a lot of money , what would you do ?

15 if i got up earlier, i (not be )............................late for work

16 if i didn't fell so tired , i (go ) ...............out with you

17 if you ( not pass).............the exam, would you take it again ?

18 if i ( not be ) ..................busy yesterday , i would have visited you

19 suppose they had offered her a job , do you think she (take )................it ?

20 if i (know)...........................that you were ill , i (go)....................to see you

21 i (see)..................him if i (go)........................to the party tonight

22 my dark (bark)..........................if it (hear)........................anything strong

23 what .................we (do)...................if they (come).....................tomorrow?

24 if she hadn't been ill yesterday , she (go )................to work now

25 if i can go tomorrow , i (let)...............you know