CONDITIONAL SENTENCES:CONDITIONAL SENTENCES:11stst TYPE TYPE

MARÍA ISABEL CALVELO

1.- Look at this:IF + PRESENT SIMPLE + PRESENT SIMPLE

If I eat too much, I feel bad.

We use this structure for facts that are generally true:

If I don't get enough sleep, I feel tired.

If you want to become a doctor, you have to study hard.

We can say the same thing by reversing the two parts of the sentence:

PRESENT SIMPLE + IF + PRESENT SIMPLEI feel bad If I eat too much.

We don't use a comma before IF.

2.- Now look at this:IF + PRESENT SIMPLE + WILL/ WON'T

If you study, you will pass your exam.

If you don't study, you won't pass your exam.

We use this structure to talk about things that may happen

in the future.

We can reverse the order and again we have to pay

attention to the use of comma.

She'll be angry if I'm late.

If I'm late, she'll be angry.

When the if – clause is negative, we can use UNLESS instead of IF followed by a positive verb:

You won't pass your exam unless you study = you won't

pass your exam if you don't study.

3.- We don not use will/ won't after IF. We can not say

If I will be late, she'll be angry.*

3.- We don not use will/ won't after IF. We can not say

If I will be late, she'll be angry.*