People generally take very little notice of how they put words together to form sentences when they speak. In verbal communication, there are cues other than words to help the listening understand meaning such as vocal inflection, tone, and even body language. However, in written language, there are none of these to help get the meaning across. The words we use and the position of the words in sentences is extremely important.
Part of effective written communication is keeping the reader's attention and convincing the reader that what you have to convey is accurate. It is not just what you have to say that is important. It is how you say it. Developing a style that is interesting is also essential to persuasive writing.
This section on sentences will show the various types of grammatical sentences along with common problems to avoid.