1. Conjunctions connect ideas and lengthen sentences.

2. Coordinating conjunctions
FANBOYS: Middle of the sentence. Do not begin a sentence with these.
FOR
AND
NOR
BUT OR
YET SO

3. COMPOUND SENTENCES FOR AND SO SHOW CAUSE AND EFFECT
I’m dumping you, for you stopped taking showers.
You stopped taking showers, so I’m dumping you.
Equal parts

4. Cause and Effect
The Dodgers will will, for they have the best pitchers.
The Dodgers have the best pitchers, so they will win the World Series.

5. I didn’t get enough sleep, so I am tired.
I am tired, for I did not get enough sleep.
I went to sleep late, so I am tired.
I went to sleep late and feel tired.(simple sentence does not need a comma)>

6. But yet show contrast BUT AND YET SHOW CONTRAST
I like your dog, but it smells.
I like your dog, yet it slobbers.
I think you’re great, but I need time to be alone.
I need to have time alone, yet I’m going to keep you around until prom.

7. AND- ADD MORE INFORMATION
I like your dog, and I hope I can get one just like it.
After school I will go to the dentist, and he will clean my yellow teeth.
After school I’m going to eat a snack and do homework. (simple)
After school I’m going to eat a snack, and I will do my homework. (compound)

8. Or shows choice OR-choice
I might buy a golden retriever, or I will steal a Labrador from my neighbor’s yard.

9. Nor –two negative choices
Edwin doesn’t like homework, nor does he like tests.
I don’t like homework, nor do I like people stepping on my white shoes in the hall.

10. Subordinating conjunctions often show cause/effect.
Before you go, sign the logbook.
Sign the logbook before you leave.
Because I studied, the test was easy.
The test was easy because I studied.
He asked if he could leave early.
If I leave early, I will miss the test.
By adding a subordinating conjunction, the independent clause becomes a dependent clause.

11. SWABI Subordinating conjunctions
Since
While
Although If
Because
A subordinating conjunction is a word that introduces an adverb clause. 
after although
as if
as long as
as much as as soon as
as though because before by the time even if even though every time
how if
if only
inasmuch as in case
in order that in the event that just in case
lest
like

12. Subordinating conjunctions
now that
once only if
rather than since so that
than
that the first time though
till unless
after although
as if
as long as
as much as as soon as
as though because before by the time even if even though every time
how if
if only
inasmuch as in case
in order that in the event that just in case
lest
like

13. Conjunctive adverbs-9th grade
Need a semicolon and a comma.
It was raining; nevertheless, we went hiking.
I do not like dog hair; therefore, I will not allow you have a dog.

14. Conjunctive adverbs Conjunctive Adverbs Use conjunctive adverbs to:
indicate a connection between two independent clauses in one sentence
link the ideas in two or more sentences
show relationships between ideas within an independent clause.
It was raining; nevertheless, we went hiking.

15. Conjunctive adverbs Examples of Conjunctive Adverbs: also however
otherwise
consequently
indeed
similarly
finally
likewise
then
furthermore
moreover
therefore
hence
nevertheless
thus
nonetheless