If clauses - Practice : 1st 2nd and 3rd conditional
I- 1ST AND 2ND CONDITIONAL : write the verbs in brackets in their correct forms.
1. If we stopped traffic pollution, the air (to be) …………………………….……………….………. cleaner.
2. If Martians (to land) …………………………….……………….………. on Earth, they would kill us.
3. She wouldn't succeed if she (not to work) …………………………….……………….………. hard.
4. If I (to be) …………………………….……………….………. you, I would help her to solve her problems.
5. If you take a taxi, you (to arrive) …………………………….……………….………. on time.
II- 1ST, 2ND and 3rd CONDITIONAL : complete the sentences.
A- If we increased petrol prices, ………
1. we would have complained.
B- If we consume less, ………
2. drivers would change to public transport.
C- The situation will become worse ………
3. we will produce less garbage.
D. If the government had taken environmental measures, ………
4. if we do nothing about air pollution.
III- Write the verbs in brackets in their correct forms. Then answer the question and determine if this is the
1st, 2nd or 3rd conditional.
Example :
would watch
0. If I went to the cinema, I (to watch) …………………………….……………….……….
interesting films.
-> Do you watch interesting films?
 yes  no  possibly
 1st  2nd  3rd conditional
1. If you (to wait) …………………………….……………….………. for me, I'll come with you.
Will I come with you?
 yes  no  possibly
 1st  2nd  3rd conditional
2. If I went anywhere, it (to be) …………………………….……………….………. Australia.
Are you going to Australia?
 yes  no  possibly
 1st  2nd  3rd conditional
3. We (to watch) …………………………….……………….………. TV if Peter hadn't bought the theatre tickets.
Did Peter buy the theatre tickets?
 yes  no  possibly
 1st  2nd  3rd conditional
4. Would you go out more often if you (not/to have) …………………………….……………….………. to do so much in the house?
Do you have much to do in the house?
 yes  no  possibly
 1st  2nd  3rd conditional
5. If he hadn't missed the train, he (to arrive) …………………………….……………….………. here in time.
Did he arrive in time?
 yes  no  possibly
 1st  2nd  3rd conditional
6. I will miss the school bus if I (not/to get up) …………………………….……………….………. early.
Will I miss the school bus?
 yes  no  possibly
 1st  2nd  3rd conditional
7. We could have helped John if we (to know) …………………………….……………….………. about his problems.
Did we help John?
 yes  no  possibly
 1st  2nd  3rd conditional
8. If we (to cycle) …………………………….……………….………. to Dresden, it will be a fantastic trip.
Are we going to cycle to Dresden?
 yes  no  possibly
 1st  2nd  3rd conditional
9. If I go to Valencia, I (to visit) …………………………….……………….………. the zoo.
Are going to Valencia?
 yes  no  possibly
 1st  2nd  3rd conditional
10. If I were a millionaire, I (to live) …………………………….……………….………. in Beverly Hills.
Am I living in Beverly Hills?
 yes  no  possibly
 1st  2nd  3rd conditional
11. If we had read the book, we (to understand) …………………………….……………….………. the film.
Did we understand the film?
 yes  no  possibly
 1st  2nd  3rd conditional
12. I could have arrived in time if I (not/ to miss) …………………………….……………….………. the train.
Did I arrive in time?
 yes  no  possibly
 1st  2nd  3rd conditional
13. If the teacher explains the grammar once more, I (to score) …………………………….……………….………. better on the test.
Did you take the test?
 yes  no  possibly
 1st  2nd  3rd conditional
14. My friend would stay longer in Vienna if he (to have) …………………………….……………….………. more time.
Will my friend stay longer in Vienna?
 yes  no  possibly
 1st  2nd  3rd conditional
15. If it had not rained I (to go) …………………………….……………….………. for a walk.
Did it rain?
 yes  no  possibly
 1st  2nd  3rd conditional