Everybody should know about some general and common good manner. So just have a look to this pic and learn good manners. You can enhance your talking and writing with these manners. If you want any grammatical help then you can take help from here.
Change Passive Voice to Active Voice. writing sentences in passive voice is discouraged b/c it can obscure the subject of the sentence & confuse the reader. It also usually creates a wordy and awkward sentence construction.