you would use a comma in a list.
e.g.;
eggs, milk, bread, cheese and coffee.
you would use it in a sentence that uses separate clauses.
e.g.;
being the kind man he is, Bill gave the charity the highest amount of money, donating over £100.00.
You dont use a comma AT ALL!
It would be appropriate to use a comma between compound subjects or compound verbs.
use a comma
I would expect a comma to be used, unfortunately, this is not always the case!
You would use a comma before it. Xerox, Inc.
The comma would come after it.
Yes, if you're listing you would normally use a semi-colon, but the use of a comma is optional!!
I would not use a comma in the phrase varied native fauna.
There is not rule that says you must use a comma before the word you exclusively. You would have to use a comma if the sentence would require one. Now if you were writing down the slang of 'you are' you would write it like this; you're. There must have been a sentence example for your homework assignment and your teacher wanted to know if you needed to use a comma in that sentence. Here is an example of the correct usage of the comma. I celebrate Easter, you don't, but I do every year.
It would look something like this: "Thanks; have a great weekend." You wouldn't really use a comma.
If it is a business letter, don't use the th; use the comma and year. That way it is absolutely clear.
A comma is used as a means to pause mid sentence. ____________________________________ I would like to eat something, such as an apple.