The main focus of the study is to analyze the simple sentence structure and its word-order patterns of Standard Arabic syntactically. Main methods concern description and comparison of word-order patterns observed. Primarily the current study deals with some differentiations of the terms on sentence types and word-order patterns described by both medieval grammarians and modern linguists. Moreover, the so called Sībawayhian theory of ʿamil’ also provides some explanations of sentence structures and word-order patterns in Standard Arabic. Simple sentences are highlighted to examine the occasions for using different patterns and where they are commonly found, along with examples to facilitate the explanation and use of these patterns. It is essential to point out that Standard Arabic is considered to be a language with a flexible word-order, which is why there exist word-order patterns of both VOS and SVO languages, though the latter is more frequently used.