Rules about commas in English are quite hmm.. interesting. On the one hand, you have some rules, but, on the other hand, almost every one of them has some exceptions.
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Time codes:
00:00 A tool that can help you with commas
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00:58 What do I use
01:29 A comma with lists
The comma before the ‘and’ in a list of three or more items is optional it’s called Serial Comma or Oxford Comma
02:43 A comma with adjectives
04:32 A comma between two independent clauses
05:52 A question for you
06:22 A comma after introductory clauses
08:15 A comma after introductory phrases
09:23 A comma with introductory words
09:59 A Comma in the middle of a sentence
12:05 A comma before a question tag
12:51 A comma with a quotation
13:25 A comma in dates
14:07 A comma with names
14:17 A comma in an address
14:51 Use a comma to set off appositives

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