CONDITIONALS . I. Put the verbs in brackets into the correct form.. II. Put the verb in brackets into the correct form paying attention to different types of conditional sentences.

CONDITIONALS

Grammar Note:

Conditional 1	E.g. If you repeat the same experiment a large number of times, then the observed mean will converge to the expected mean.
Conditional 2	E.g. What would happen if experiments could be carried out in the absence of air resistance?
Conditional 3	E.g. If Frege and Russel could have built arithmetic on logic, that would have made all mathematics as solid as logic itself.
Mixed Conditional	E.g. Physics would be “more interesting” if Higgs boson hadn’t been found.
Implied Condition (with no “if”part)	E.g. Oddly enough, such a reaction would not have occurred a century or more earlier…

I. Put the verbs in brackets into the correct form.

1. Joan (be able to) come to the party if she weren’t working.

2. Paul (ruin) his shirt if he climbs that tree.

3. If you (put) your keys in your pocket, you wouldn't have lost them.

4. If I were you, I (not/go) out in this weather.

5. Emily (call) me if she had changed her mind.

6. Take an umbrella, in case it (rain).

7. Dave (be) home at six o'clock provided he catches the five o'clock bus.

8. If you (pass) a bakery, (you/buy) some bread, please?

9. I forgot to ask Simon for his phone number. If I (see) him today, I (ask) him for you.

10. Peter won't help me with my homework. I'm sure he (help) you if he (have) the time.

11. If I (not/buy) that lottery ticket, I (never/win) all this money!

12. You (not get) paid for time off unless you (have) a doctor's note.

II. Put the verb in brackets into the correct form paying attention to different types of conditional sentences.

1. We never (put) a man on the moon if we (insist) that the trajectories should be computed with dialectic rigour.

2. If Newton (not experiment) with the colour band, he (not formulate) the corpuscular theory of light.

3. The special theory of relativity (not be) beautiful without Einstein; but it (be) a tool for physicists.

4. If one (travel) in a straight line through the universe, perhaps one eventually (revisit) one’s starting point.

5. If ancient Greeks (have) access to computers, it is likely that the word “experimental” in the phrase “experimental mathematics” (be) superfluous.

6. If you (choose) Financial Mathematics, you (begin) your studies with economics and the mathematical theory of financial derivatives.