Say your sentence aloud. If you find you pause before the word 'therefore', you will probably want to insert a comma. If you do not pause, no comma is required. Use a comma when the sense requires it, not because you have a specific word in your sentence.
Not necessarily. There is no word or phrase in English that requires a comma.
A comma is not typically used before "therefore." However, a comma may be used after "therefore" to separate it from the rest of the sentence when it is starting the clause.
Either a comma or a semi colon can be used, depending on the rest of the sentence.
Before eg. The television has broken, therefore I will get it fixed.
The comma goes before "therefore" when it is used to connect two independent clauses. The semicolon goes before "therefore" when it is used to separate two closely related independent clauses.
You typically place a comma before and after the word "therefore" when it is used in the middle of a sentence. For example: "I studied hard for the exam, therefore, I passed with flying colors."
last comma before the and is not necessary
A comma is typically placed before "or" when it separates independent clauses in a sentence. However, a comma is not needed after "or" in most cases.
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."
If it is used as what is termed an "interrupter," you use a comma. If it is joining two clauses, you use a semicolon before it and a comma after it. Interrupter: He would, therefore, appreciate a quick response. Joining clauses: He appreciates quick responses; therefore, I shall endeavour to provide them without delay.
No, a comma is not typically used after "therefore" unless it is being used to introduce a parenthetical phrase or to provide clarity in the sentence.
The comma should come before the word "but" when it is used to separate two independent clauses. For example: "I wanted to go to the store, but it started raining."
no. if but before is a sentence on its on and after but is a sentence on its own then put a comma before but.