Poor sentence construction can confuse or fatigue the listener, making reading more unpleasant than instructive. Varying the length and structure of your sentences is a vital method to enliven a piece of writing. Some writers utilize lengthy, intricate phrases excessively, concealing their thoughts behind sophisticated syntax. While these types of sentences are well formed, they can be difficult for readers to comprehend. Other writers use simple language but fail to explain their ideas adequately - the reader loses track of what was said in the first place. Sentence structure includes the parts of speech used to create sentences, such as articles, adjectives, adverbs, prepositions, conjunctions, and interjections. Knowing these parts of speech will help you vary your sentence structure and avoid using the same type of word too frequently. For example, if you always use the word "however" then it should not surprise us when you say something like "however, John loves Mary very much." Although this sentence contains several words, it is still only one sentence with a simple subject (John) and a simple verb (loves). A good sentence structure is necessary for clarity in writing. If you want your readers to understand you, you need to make sure that they don't get distracted by the style you have chosen to use. Avoid using complex language or obscure literary devices at the expense of clarity. A poor choice of words or structures may cause others to ignore you or your message altogether.