Not necessarily. It depends on the context. If you think in terms of placing a comma after a word, rather than before one, it might be helpful.
NO
no
It is usually appropriate to place a comma before "but." One should not use a comma after "but."
In a company name such as "ABC Corp," do not use a comma. However, use a comma in the formulation, "ABC, Inc."
Yes, you should use a comma before "Jr." when writing a person's name to separate the person's last name from the suffix. For example, "John Smith, Jr."
Not necessarily. A comma indicates a pause in speech, or separates ideas for clarity. Where there is no pause and no possible confusion there should be no comma.
A comma before "and" depends on the context. Use a comma before "and" in a list of items (e.g., red, blue, and green). However, do not use a comma before "and" when it connects two independent clauses unless it is needed for clarity or to avoid confusion.
You rarely use a comma after and, unless there is an elliptical expression there, and some people believe that you should never use a comma before and.In general, commas are not used but there are exceptional circumstances.
No of course not!only when you have run on sentences.
before
a comma should always precede but. Especially if it is joining a compound sentence. For example,Michael is tall, but Shawn is taller.I want to go to school, but I have to do my homework.
"Inc" is not a word, it's an abbreviation for "Incorporated," and there should be a comma before it.