Rules of Conjunction and Comma

ADDITIONAL INFORMATION

For example, see page 21 on "connecting words of OR plus AND".

(1) You should be careful with the use of AND as it joins two or more positive things.

1. I like meat.                           Combine the 2 sentences into
2. I like egg.                                            I LIKE MEAT AND EGG.

(2) You should be careful with the use of OR as it joins two or more negative sentences.

1. I don't like cat.                     Combine the 2 sentences into
2. I don't like dog.                                    I DON'T LIKE CAT OR DOG.

(3) OR is also used to connect choice in question.

• Do you want to run OR walk? (choose 1)
• My mother OR father will pick me up. (only one of them who will pick me up, not both)

Here are 3 rules of commas (see p.58-9):

1. Put a comma after time-order transition expressions, except then (e.g. First, )
2. Use a comma after the first part of a compound sentence (e.g. I'm sad, so I cry)
3. Use a comma to separate items in a series of 3 or more (e.g. cat, dog, and bird)