NO
Maybe. Maybe not. Sometimes. Othertimes not. Whether the use of a comma is or is not appropriate depends on the context.
Not necessarily. There is no word in English that requires a comma.
Yes, you should typically use a comma before and after "however" when it is used as an interrupter in a sentence to indicate a contrast. For example: "I wanted to go to the party, however, I was too tired."
Yes, you can put a comma before except. Example of a comma before except in a sentence- She can do it, except that the mountain is too steep
no
Not necessarily. Commas are a feature of sentence structure. There is no word or phrase that requires one. For example: I like it too much; I like it, too.
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."
Betty will come on Thursday too, if she can. or Betty will come on Thursday, too, if she can. Some styles classify "too" and "also" and "additionally" as conjunctive adverbs, like however or therefore, and use a comma before them. Other styles, noting that there is not necessarily a pause requiring a comma, use the comma only when there is a need to emphasize such a verbal pause. You should follow the style that you ordinarily use.
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.