When you park in front of a meter, put quarters in it. Otherwise, you may find you have a ticket when you return.
This example uses the word otherwise and a comma correctly.
You can put a comma before or after just about any word if the sentence structure requires it. If the sentence structure does not require it, it may be permissable to use a comma to assist in clarity and avoid confusion. Otherwise, don't use a comma. Have I confused you yet? Using a comma does not depend on the word, it depends on the structure of the sentence.
The main rule of a comma is to use it to separate the elements in a series of three or more things. You should also use a comma to set off quoted elements and to separate coordinate adjectives.
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.
There is no word in English that necessarily requires a comma.
NO
Not necessarily. There is no word in English that requires a comma.
no
No
no
no
no
No.