d. General variants on conditional sentences 1 Using Progressive verb forms
we use a continues form of the verb if we want to suggest „continuous meaning‟ e.g. to emphasize the temporariness of something. We can use continuous verb forms in
both the-if and the main clause.
36
It is raining right now, so I will not go for a walk. If I were living in Chile, I would be working at a bank.
If I had been living in Chile last year, I would have been working at a bank.
2 Mixed Conditional sentences
Frequently the time in the “if clause” and the time in the “result clause” are different: one clause may be in the present and the other in the past. Notice that past and present
times are mixed in the sentences in the following examples.
37
I did not eat breakfast several hours ago, so I am hungry now. If I had eaten breakfast several hours ago, I would not be hungry now.
past present
He is not a good student. He did not study for the test yesterday. If he were a good student, he would have studied for the test.
present past
36
Martin Parrot, Grammar for English Language Teacher Cambridge: Cambridge University Press, 2004, p.278
37
Betty S. Azar, Op.Cit. p.353
3 Modal Verbs
We can use may, might, and could in the conditional clause of type 1 conditional sentences to show that something possible consequence. We can also use might and
could in place of would in type 2 and 3 conditional sentence.
38
It can be seen from following examples:
If you listen to me carefully, you may learn something useful. If I were a bird, I could fly home.
If you had told me about your problem, I might have been able to help you.
Other examples with the same pattern as follows:
I can bring something to eat if you want. If john should call, tell him I will be back around five.
4 Omitting If
We can express a condition with should or the subjunctive were by inverting the subject and verb. But an if-clause is more common, especially in informal English.
39
It can be seen from the following examples:
1. A. If I were you, I would not to do that. B. Were I you, I would not do that.
were I you = if I were you. 2. A. If I had known, I would have told you.
B. Had I known, I would have told you. had I known = if I had known.
3. A. If anyone should call, please take a message. B. Should anyone call, please take a message.
should anyone call = if anyone calls
38
Martin Parrot, Loc.Cit.
39
John Eastwood, Oxford Guided to English Grammar New York: Oxford University Press, 2002, p.338