LESSON 3

I. Fill in each blank with an appropriate preposition :

1/ Gravity keeps us all __________ being hurled __________ the earth as it whirls __________.

2/ Man-made satellites leave the earth _________ very great speed.

3/ The sun exerts a pull __________ other planet __________ its system.


4/ He laid foundations __________ his famous discoveries __________ Mathematics and Physics.

5/ Gravity makes ball thrown __________ the air fall back __________.

6/ Every person has a weight __________ the earth.

7/ In 1656, Sir Isaac Newton was brought home __________ school to run the farm.

8/ You can look __________ the meaning of these words __________ the help of a dictionary.

II. Supply the correct tenses of the verbs in brackets :

1/ He (work) __________ in this factory since 1988.

2/ What (happen) __________ to you yesterday ?

3/ I (wash) __________ my hair before breakfast this morning.

4/ The boys (break) __________ a window when they (play) __________ football.

5/ We (understand) __________ it after the teacher (explain) __________ it to us.

6/ They (build) __________ that bridge when I was here last year. They (not finish) __________ it yet.

7/ He (play) __________ football since he (be) __________ 10 years old.

8/ Excuse me, you (speak) __________ English ?

9/ What Tom (do) __________ when you saw him ?

10/ How often you (read) __________ a newspaper ?

III. Conditional sentences :
A- Put the verbs in the correct tenses :

1/ If it costs too much, I (buy) __________ a small one.

2/ If you (drive) __________ more carefully, you wouldn’t have so many accidents.

3/ What (happen) _________ if there (not be) _________ gravity?

4/ If I (make) __________ that mistake again, my teacher (get) __________ angry with me.

5/ If I spoke English, my job (be) __________ a lot easier.

6/ If he (go) __________ to London yesterday, he (meet) __________ his old friend.

7/ Would you mind if you suddenly (win) __________ half a million pounds ?

8/ I (lend) ________ them some money if they (ask) _______ me

9/ If we (know) __________ who he was, we (invite) __________ him to speak at our meeting.

10/ If they had invited us, we (go) __________ to the party.

B- Rewrite the following sentences using If clauses :


Model :
a/ My brother will have enough money. He will buy a bicycle.
( If my brother has enough money, he will buy a bicycle.
b/ She can’t speak English. She won’t apply for the job.
( If she could speak English she would apply for the job.
c/ He wasn’t here. He didn’t have a lot of fun.
( If he had been here, he would have had a lot of fun.

1/ She can’t be employed because she doesn’t have a college degree.

( If
2/ I don’t have enough money. I can’t go on a long holiday this year.

( If
3/ He is very slow, so we won’t give him such an important task.

( If
4/ He works overtime to get more money because he has to pay father’s debt.

( If
5/ City life isn’t enjoyable because everything is very expensive.

( If
6/ There are industrial factories inside the city, that’s why pollution can’t be reduced.

( If
7/ Everything on the earth grows well because the sun always shines.

( If
8/ There is a grammar error in this English composition, that’s why it can’t get a full mark.

( If
9/ I don’t have a typewriter. I can’t type it myself.

( If
10/ Mary doesn’t see the sight. She can’t tell you about that.

( If
11/ I don’t know his address. I can’t give it to you.

( If
12/ She was ill. She didn’t go to work.

( If
13/ It rained all morning. We didn’t go out.

( If
14/ He was tired. He made a mistake.

( If
15/ You didn’t ask Alice. She didn’t tell you the truth.

( If

IV. Build a sentence with “SO ..... THAT” :