You can use commas after you write a name e.g.: Jeff, please finish your homework.
You can also use commas to write a list e.g.: Basketball, Soccer, Cricket, Netball and Tennis are all ball sports.
You also use commas when you have a list and it says something like-We had coffee, cheese and crackers, and grapes.-see how I put a comma after crackers to say that cheese and crackers were one thing.
Don’t use commas in something like this – He walked all the way home, he shut the door. – It should be written like this – He walked all the way home. He shut the door or After he walked all the way home, he shut the door.
If you know anything else about commas then tell me by commenting on my post!