Are those sentences slang, too?

[Nightmare85]

Hi,

Are those sentences (the left parts) slang, too?
Maybe not all of them belong to slang, but I would be thankful if you say which are slang and which aren't.

1. I'm going to eat. - I am going to eat.
2. It's time to leave. - It is time to leave.
3. It's been a while. - It has been a while.
4. They aren't here - There are not here.
5. I'd guess he'll lose. - I would guess he will lose.
6. I've no problem understanding you - I have no problem to understand you.
7. Don't smoke while driving! - Do not smoke while you are driving!
8. Y'all are my friends - You all are my friends.

Thank you!

Cheers!

[Anglika]

None are "slang". They all contain contractions usual in spoken English.

[Barb_D]

Just a quick word about "y'all."

With a dad from the South, I have a latent Southern speech pattern, and although I often say "y'all," it is routinely met with good-natured kidding up here in Yankee territory (the northern states).

I'd skip that one unless the speaker is from the American South.

[soutter]

The only real difference between contracted and non-contracted verbs are that they are generally formal and informal, respectively.

[Nightmare85]

Thank you for your replies.
I'm an opponent/enemy of "slang" and "Gangsta English".
So I can use abbreviations of this type (as in my 1st post) without having a "bad conscience"

Cheers!

[Barb_D]

You bet! In fact, you'll sound a bit unnatural if you never use contractions.

[Nightmare85]

Yes, I believe I would sound like a robot
I barely write things like "I do not like it".
Only if I would write a "special" letter (I forgot the true word - formal?) I would not use abbreviations.

Cheers!

[christain]

None are slang