LY THUYET VA BAI TAP CAU DIEU KIEN

Conditional Sentences / If-Clauses Type I, II und III
Conditional Sentence Type 1
→ It is possible and also very likely that the condition will be fulfilled.
Form: if + , -
Example: If I find her address, I’ll send her an invitation.
Form
if + Simple Present, will-Future
Example: If I find her address, I will send her an invitation.
The main clause can also be at the beginning of the sentence. In this case, don`t use a comma.
Example: I will send her an invitation if I find her address.
Note: Main clause and / or if clause might be negative. See und -on how to form negative sentences.
Example: If I don’t see him this afternoon, I will phone him in the evening.
Use
Conditional Sentences Type I refer to the future. An action in the future will only happen if a certain condition is fulfilled by that time. We don`t know for sure whether the condition actually will be fulfilled or not, but the conditions seems rather realistic – so we think it is likely to happen.
Example: If I find her address, I’ll send her an invitation.
I want to send an invitation to a friend. I just have to find her address. I am quite sure, however, that I will find it.
Example: If John has the money, he will buy a Ferrari.
I know John very well and I know that he earns a lot of money and that he loves Ferraris. So I think it is very likely that sooner or later he will have the money to buy a Ferrari.
Exercises on Conditional Sentences Type 1
Complete the Conditional Sentences Type I.
If Caroline and Sue 
 the salad, Phil 
 the house.
If Sue 
 the onions for the salad, Caroline 
 the mushrooms.
Jane 
 the sitting room if Aaron and Tim 
 the furniture.
If Bob 
 up the kitchen, Anita 
 the toilet.
Elaine 
 the drinks if somebody 
 her carry the bottles.
If Alan and Rebecca 
 the food, Mary and Conor 
 the sandwiches.
If Bob 
 after the barbecue, Sue 
 the guests in.
Frank 
 the DJ if the others 
 along their CDs.
Alan 
 the drinks if Jane 
 him some of her cocktail recipes.
If they all 
 their best, the party 
 great.
Complete the Conditional Sentences (Type I) by putting the verbs into the correct form.
If you (send) 
 this letter now, she (receive) 
 it tomorrow.
If I (do) 
 this test, I (improve) 
 my English.
If I (find) 
 your ring, I (give) 
 it back to you.
Peggy (go) 
 shopping if she (have) 
 time in the afternoon.
Simon (go) 
 to London next week if he (get) 
 a cheap flight.
If her boyfriend (phone / not) 
 today, she (leave) 
 him.
If they (study / not) 
 harder, they (pass / not) 
 the exam.
If it (rain) 
 tomorrow, I (have to / not) 
 water the plants.
You (be able/ not) 
 to sleep if you (watch) 
 this scary film.
Susan (can / move / not) 
 into the new house if it (be / not) 
 ready on time.
1) If I 
 (to study), I 
 (to pass) the exams.

2) If the sun 
 (to shine), we 
 (to walk) to the town.

3) If he 
 (to have) a temperature, he 
 (to see) the doctor.

4) If my friends 
 (to come), I 
 (to be) very happy.

5) If she 
 (to earn) a lot of money, she 
 (to fly) to New York.

6) If we 
 (to travel) to London, we 
 (to visit) the museums.

7) If you 
 (to wear) sandals in the mountains, you 
 (to slip) on the rocks.

8) If Rita 
 (to forget) her homework, the teacher 
 (to give) her a low mark.

9) If they 
 (to go) to the disco, they 
 (to listen) to loud music.

10) If you 
 (to wait) a minute, I 
 (to ask) my parents.

1) If it 
 (to rain), the children 
 (not/to go) for a walk.

2) If she 
 (not/to read) the novel, she 
 (not/to pass)the literature test.