Ya mum
In many, but not all, situations, the comma goes before the word "or": The banquet offered a choice of steak, chicken, or salmon. Get out of there right now, or I'll tell the teacher. In some situations, however, it is correct to have a comma after "or": I am not a big fan of baseball or, to be perfectly honest, most sports.
no
No. After the word and comma can not be used, as it is grammatically inappropriate to use comma after conjunctions such as and, which are called coordinate conjunctions.
The comma goes after the name. Hello John,
add a comma after the semicolon.
yes
Adding a comma is perfectly proper, but not compulsory. In speech, adding a tiny pause between 'you' and 'Jim' tells him that you really are grateful. When writing, a comma signals that little pause.
YES
Yes, a comma is used after the salutation in a formal letter. For example, "Dear Mr. Smith,".
A sentence splice (alternately, comma splice) is when 2 independent clauses are joined by a comma. This is not grammatically correct. To fix a sentence splice, you can either change the comma to a semicolon, or you can add a coordinating conjunction after the comma (for, and, nor, but, or, yet, so).
A comma--unless the three items contain a comma, then use a semicolon. I think this is correct: If they are related, a comma. If they are not related, a semi colon. It doesn't have anything to do with related or not. 110% sure the first answer is correct. Here is a site with examples: http://www.cloudnet.com/~edrbsass/edrules.htm.
A sentence splice occurs when two independent clauses are incorrectly joined together with a comma without a coordinating conjunction or proper punctuation. This results in a run-on sentence that lacks the necessary separation between clauses for clarity and grammatical correctness.