Question

ayudaa con el cero condicional 21 Unless he ___________ (sell) more, he won't get much commission. 22 If I lend you $10, when you ________ (repay) me? 23 We'll have to move upstairs if the river __________ (rise) any higher. 24 If he ___________ (work) hard today, can he have a holiday tomorrow? 25 Ice ________ (turn) to water if you heat it. 26 If the house ________(burn) down, we can claim compensation. 27 If you ___________ (not like) this one, I'll bring you another. 28 Unless you are more careful, you _________(have) an accident. 29 Tell him to ring me up if you __________ (see) him. 30 If I tell you a secret, you ___________(promise) not to tell it to anyone else? 31 If you __________(not believe) what I say, ask your mother. 32 If he ___________(like) the house, will he buy it? 33 If you kindly sit down, I __________(make) enquiries for you. 34 Unless I have a quiet room, I _________ (not be able) to do any work. 35 She won't open the door unless she _________(know) who it is. 36 Should you require anything else, please ___________ (ring) the bell for the attendant.

Answer 1

ZERO CONDITIONAL

If present simple, present simple

FIRST CONDITIONAL

if present simple, will

-We use a positive verb after unless, but the meaning is negative:

We'll go swimming unless it is cold. (=We'll go swimming if it's not cold.)

21 Unless he sells more, he won't get much commission.

22 If I lend you $10, when do you repay me?

23 We'll have to move upstairs if the river rises any higher.

24 If he works hard today, can he have a holiday tomorrow?

25 Ice turns to water if you heat it.

26 If the house burns down, we can claim compensation.

27 If you don't like this one, I'll bring you another.

28 Unless you are more careful, you have an accident.

29 Tell him to ring me up if you see him.

30 If I tell you a secret, you promise not to tell it to anyone else?

31 If you don't believe what I say, ask your mother.

32 If he likes the house, will he buy it?

33 If you kindly sit down, I make enquiries for you.

34 Unless I have a quiet room, I am not able to do any work.

35 She won't open the door unless she knows who it is.

36 Should you require anything else, please ring the bell for the attendant.