Sentences are individual statements which are able to convey complete ideas or thoughts as a self-contained unit. These can be simple sentences containing two parts - a subject (a noun or pronoun) and a predicate (a verb) or more complex structures which contain other elements such as adverbs (words used to describe nouns) or more than one subject or action which is being described.

It is important that sentences are constructed in a way which allows the reader to follow its meaning easily; simplicity often dictates that it is best to emphasise only one piece of information or point in each sentence which allows the reader to follow a train of thought more easily. Each sentence in a paragraph should move in a reasoned fashion from one to another, constructing a logical proposition. A mistake that is often made in writing essays is making sentences too complicated which leads to the reader being unable to follow any line of argument.

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