Question

I will/would buy this dress if it was/were the right size​

Answer 1

I would buy this dress if it was the right size

Answer 2

I will buy this dress if it was the right size

Answer 3

I will answer in detail. I will/would buy this dress if it was/were the right size.

This is a conditional sentence that expresses a hypothetical situation. The correct way to form this sentence depends on whether you are using the first or the second conditional.

The first conditional is used to talk about possible future situations and their consequences. The structure is: if + present simple, will + base form of the verb. For example:

- If it rains tomorrow, I will stay at home. - If you study hard, you will pass the exam.

The second conditional is used to talk about unreal or improbable situations and their consequences. The structure is: if + past simple, would + base form of the verb. For example:

- If I won the lottery, I would buy a mansion. - If you were taller, you would play basketball.

In your sentence, you are talking about an unreal or improbable situation, so you should use the second conditional. The correct form is:

- I would buy this dress if it were the right size.

Note that the verb to be is an exception in the second conditional. It is always conjugated as were, regardless of the subject. For example:

- If I were you, I would apologize. - If she were here, she would help us.

You can find more information about conditional sentences and how to measure your dress size online . I hope this helps you.