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English Grammar in Use – Unit 39: If I knew…, I wish I knew…

conditional sentences

in English

Conditional Sentences – based on

Part A:

This unit tries to explain the structure of conditional sentences in English.

Study this example situation:
Sarah wants to phone Paul, but she can’t do this because she doesn’t know his number. She says:
I knew his number, I would phone him.
Sarah says: knew his number …. This tells us that she
doesn’t know his number. She is imagining the situation.
The real situation is that she doesn’t know his number.
When we imagine a situation like this, we use if+ past (if I knew / if you were / if we didn’t etc.).
But the meaning is present, not past:
There are many things I’d like to do if I had more time. (but I don’t have time)
If I didn’t want to go to the party, I wouldn’t go. (but I want to go)
We wouldn’t have any money if we didn’t work. (but we work)
If you were in my position, what would you do?
It’s a pity he can’t drive. It would be useful if he .

Part B:

We use the past in the same way after (I I knew / I you were etc.). We use to say that we regret something, that something is not as we would like it to be: ———.
I knew Paul’s phone number. (= I don ‘t know it and I regret this)
Do you ever wish you could fly? (you can’t fly)
It rains a lot here. I wish it didn’t rain so much.
It’s very crowded here. I wish there weren’t so many people. (there are a lot of people)
I wish I didn’t have to work tomorrow, but unfortunately I do.

Part C:

If I were / if I was
After if and wish, you can use were instead of was (if I were / I wish it were etc.).
If I was / I wish it was are also possible. So you can say:
If I were you, I wouldn’t buy that coat. or If I was you, …
I’d go for a walk if it weren’t so cold. or … if it wasn’t so cold.
I wish she were here. or I wish she was here.

Part D:

We do not normally use would in the if-part of the sentence or after wish: =:, If I were rich, I would travel a lot. (not If I would be rich)
Who would you ask if you needed help? (not if you would need)
I wish I had something to read. (not I wish I would have)
Sometimes wish .. . would is possible: I wish you would Listen. See Unit 41

Part E:

Could sometimes means ‘’ and sometimes ‘was/were able to’:
She could get a better job (she could get= she would be able to get)
if she could speak English. (if she could speak= if she was/were able to speak)
I wish I could help you. (I wish I could = I wish I was able)

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