Conditional I in English Grammar

Conditional I in English Grammar

We use the conditional Type 1 when we want to talk about situations we believe are real or possible in the future. 'If I study hard, I'll pass the exam.'

Conditional I in English Grammar

Conditional I

Conditionals consist of an if clause and a main clause. The if clause tells you the condition and the main clause tells you the result. You can change the order of the clauses without changing the meaning.

Conditional Type 1

First conditional talks about real situations and facts that are really likely to happen.

If I study hard , I will pass my exams .

We are not sure yet, it is likely to happen.

Conditional Type 1: Structure

In type 1 conditional sentences, the structure is usually:
If (or when) + clause with present simple+ , + main clause with future simple (will + base form)

If it doesn't rain , we'll go to the park .

The result clause should refer to future time.

If Clause

If the 'if clause' comes first (at the beginning of the sentence) don't forget to put a comma (,) after it.

If she drinks too much\ , \ she will get sick .

The rule of placing comma is important.

If you begin your sentence with the main clause, you don't need to put a comma between the two clauses.

we'll go to the park if it doesn't rain .

One does not need a comma before ''if''.

She will get sick if she drinks too much .

The same rule applies here.


We cannot use 'will' or 'won't' in the if clause. The main clause must have a future simple tense and the 'if clause' always has a present simple tense.

If I remember his name , I will tell you . (Don't say If I will remember his name ... )

If clause cannot bear a future meaning.

If Alternatives

You can use 'when', 'unless', 'as long as' or 'in case' instead of 'if'.

As long as she tries her best at work , she will continue her job .

It is the same as ' if she tries her best at work, she will continue her job.'

I'll give you a call in case I'm late .

Difference between 0 and 1 Conditionals

The main difference between 0 and 1 conditionals is that in type 1 conditional, the main clause must have a modal verb (like will, can, should ...)

If you don't water your plants , they die .

This is zero type conditional, therefore there is no modals in the main clause.

If you promise to be careful , you can drive my car .

This is type 1 conditional and we used the modal 'can' in the main clause, because we should have a modal in type 1 conditionals.

Conditional Type 1: Other Tenses

The 'if clause' can have all present tenses in the English grammar, like present simple, present continuous, present perfect and present perfect continuous.
And the main clause can have future simple tense, or have modal verbs like 'can, may, might, must, should, could'.

If you promise to be careful , you can drive my car .

Modals can be used in result clauses.

If you are exercising every day , you will lose weight .

'Will' is a modal verb that is used in the result clause, and the if clause is in present progressive tense.

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