​Simple sentences are independent clauses. (Have a subject & a predicate.)

​The cat ate the mouse.

​predicate

​subject

​verb

​You can combine the following sentences with a coordinating conjunction.

​FANBOYS

for, and, nor, but, or, yet, so

​

​She went to work. She did not want to go.

​She went to work, but she did not want to go.

​for --- since, because

I do not like to live in Chicago, for it is too cold there.​

and --- combines

The cats and the mice fight with each other.​

nor --- combine untrue things

​He will not eat apples, nor will he eat oranges.

but --- exceptions

We worked at all times, but not in the morning.​

​or --- choosing between options

I will visit Guangzhou or Shanghai.​

yet --- ​similar to but; express unexpected things

I want to eat chocolate ice cream, yet I have to accept that I can't because I'm too fat.​

so --- consequences; something will happen

​It's raining so it will be wet outside.