15-I might be late. If so, start without me.

> If I am late, start without me

16- The fire was brought under control thanks to the night watch-man.

→ If it hadn't been for the night watch-man's help,  the fire would help out of control

17- Dick is in prison because a detective recognized him.

→ If the detective hadn't recognized him, Dick wouldn't in prison

18- If you want my advice, I'd think twice about buying a car like that.

> If I were you, I'd think twice about buying a car like that

19- If the painting is finished by Saturday, we'll pay you extra.

→ Finish the painting by Saturday,and we’ll pay you extra.

20- Getting up early makes me feel hungry.

> If I get up early, I will feel hungry 

21- Please don't eat in the classroom.

>I'd rather not eat in the classroom

22- I think we should leave now.

→I think it's time we were leaving

23- What a pity we ate all the food.

> If only we had not eaten all the food 

24- It's a shame we don't have a TV.

→I wish we had a TV

IV- Rewrite each of the following sentences, using the word in the capital

1- If you do have any free time, could you give me a ring? SHOULD
--> Should you not have any free time, could you give me a ring ?
2- We won’t go away if the weather is bad. UNLESS
--> Unless the weather is bad,we will go away 
3- I didn’t have the money, so I didn’t buy a new suit. WOULD
-->If I had had the money,I would have bought a new suit.
4- If you hurry up, you won’t be late. GOING
-->If don't hurry up,you are going to be late.
5- If they offered you the job, would you accept? WERE
-->  Were they to offer the job, would you accept?
6- If you are in London by any chance, come and see me. HAPPEN
-->Should you happen to be in London, come and see me.
7- Without you, I would have given up years ago. BEEN
-->If it hadn't been for you,I would have given up years ago.
8- Please take a seat, and I’ll inquire for you. WILL
-->If you take a seat , I'll inquire for you.

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