A conjunction is a word which is used to link thoughts and ideas within a sentence. You might think of them as being the glue of the phrase. Without the use of a conjunction, you would not be able to express your thoughts and ideas in a manner which flows. Your sentences would be forced into being simple and concise. Lets take a look at an example. Consider the following sentence.

• The girl is pretty and kind. She has blonde hair with green eyes and she is wearing a blue jacket on top of a white t-shirt.

You can see how the words highlighted in bold (the conjunctions) bring each of the ideas together to create a flowing sentence. Without the use of a conjunction, the wording would be much more different.

• The girl is pretty. The girl is kind. She has blonde hair. She has green eyes. She is wearing a blue jacket. She is wearing a white t-shirt.

This does not sound as audibly appealing and uses far too many words and sentences, making it impractical. It is important to make sure that when you are using conjunctions that you make sure that they are consistent, for example:

• He runs quickly and gracefully.    (correct)
• He runs quickly and graceful.    (incorrect)

The first sentence is consistent and therefore correct, the second sentence is not.