I know how does it work when we are talking about past simple and present perfect, but how it works with present simple vs present perfect ?
Like have got or have ?
for example: I have got a car or I have a car ?
is there any difference ?
I found that have got is less formal than have
"I have got a car" could mean the same as "I have a car" but less formal (as you said).
BUT
It could also mean that you have received a car (but someone would generally say "I have gotten a car"). The verb to get has lots of definitions and is VERY commonly used for different things.
You can even say "I got a car" (as in "I have a car") which is MUCH less formal, but it can also mean you received a car like the past-particle of the verb.
Using "have" in a sentence is normal usage as well as correct grammar. Using "have got", while it may be often heard to be used, is poor grammar.
People do say, "I have got a car", but this is poor grammar. Correct grammar is, "I have a car."
The verb get has the form "get/got/gotten" as described here:
get/got/gotten
Get is the present tense form of the verb. Got is the past tense form as well as one of the two alternatives for the past participle. The other alternative for the past participle is gotten, which is generally preferred in the United States.
We get our raw materials from companies in Texas and Nevada.
We got our raw materials from companies in Texas and Nevada.We have always gotten our chemicals from companies in Texas and Nevada.
In informal contexts, many speakers use have got, 've got, or simply got to mean "have" or "must." You should avoid this usage of the verb get in your writing; instead, use have or must.
Weak
We have got several problems on our hands.Improved
We have several problems on our hands.Unacceptable
We got several problems on our hands.Acceptable
We have several problems on our hands.Weak
We've got to find a solution to our problems.Improved
We must find a solution to our problems.
