if / will / be going to

[siruss]

What is the difference in meaning between the two sentences?

I'm going to open a bottle of lemonade, if you you want some.
I'll open a bottle of lemonade if you want some.

( Is the comma before if in the first sentence meaningful?)

[polar6992]

Originally Posted by siruss

What is the difference in meaning between the two sentences?

I'm going to open a bottle of lemonade, if you you want some.
I'll open a bottle of lemonade if you want some.

( Is the comma before if in the first sentence meaningful?)

The comma is, in fact, meaningful. In the first statment, the speaker intends to open a bottle of lemonade regardless of the listener's wish. The "if you want some" is a phrase appended to the primary thought that the speaker intends. In the second sentence, the speaker will open the lemonade IF (and only if) the listener wants lemondade.

[siruss]

Originally Posted by polar6992

The comma is, in fact, meaningful. In the first statment, the speaker intends to open a bottle of lemonade regardless of the listener's wish. The "if you want some" is a phrase appended to the primary thought that the speaker intends. In the second sentence, the speaker will open the lemonade IF (and only if) the listener wants lemondade.

Thank you for your clear explanation.
I have one more question, though.

I'm going to open a bottle of lemonade, if you want some. means
'I've decided to open a bottle of lemonade.If you want some, tell me.', doesn't it?

[polar6992]

I think you are absolutely right. The "tell me" is clearly implied in the sentence with the comma.

[siruss]

Originally Posted by polar6992

I think you are absolutely right. The "tell me" is clearly implied in the sentence with the comma.

Thank you very much.
It is very clear now.