A grammar check can come in handy for anyone. Like many, you probably learned many of the grammar rules all throughout your school years. Also, like many, you’ve likely forgotten much of what you learned. Where does the comma go, for instance? Is ending your sentences with a proposition really that bad a practice? Are there hard and fast rules for when to use who, that or which? All of these questions, as well as many more, can plague both amateur and professional writers. Doing a grammar and ... Registration not required.