Simple sentences can also be longer than this; as long as a sentence consists of only an independent clause, it is a simple sentence. Simple sentences can also contain a compound subject or a compound ...

There are three main types of sentence structure - simple close simple sentenceA sentence containing one clause made up of a subject and a verb., compound close compound sentenceA sentence ...

Simple sentences are important for making clear points. Be careful though - if you only ever use simple sentences in your writing you don’t add much detail, so your reader could lose interest.