Tips for writing simple sentences include using prepositional phrases, making the sentence more descriptive using adjective and adverbs and lengthening the sentence with compound subjects and verbs. A simple sentence must have a subject and predicate that communicate a complete thought.
Resources from web sites like k12reader.com help beginning writers learn how to use all parts of speech to describe the "five W's" of "who, what, where, why and when" an action occurred. Worksheets for higher-level students guide them through fixing run-on sentences and sentence fragments. Memorizing prepositions and conjunctive adverbs fosters creative writing and prevents simple sentences from becoming choppy and repetitive.