Here are some tips about Conjunctions.
1) A conjunction is a word that joins words or groups of words.
2) Some examples of conjunctions: and, but, yet, for, so, or, because.
3) As a general rule, avoid starting a sentence with a conjunction.
Exception: You may start a sentence with a conjunction to create effective emphasis and provided that you don't do it often.
Example: Alma guessed that Jon was the person who knocked at the door. And she was right!
4) Also, as a general rule, avoid using a comma every time you see a conjunction.
Exception: You could use a comma before a conjunction that introduces an independent clause.
Example: Paolo went to park, and Lougene went to the mall.
5) Finally, don't overuse the conjunctions "and" and "so" in a sentence or paragraph.
Attribution to Rebecca Elliot and her book Painless Grammar (c) 2006, 1997
Preposition tips are next.
