are you not allowed to start a sentece off with but
These 10 animal facts will amaze you. While it is never advisable to use the word never when it comes to English grammar rules, many grammarians still considered it unacceptable to start a sentence with and, but or because. In their opinion, doing so creates a sentence fragment, not a complete sentence.ost 11. I think using the words but, and, or because to start a sentence is the effect of one to many hours spent in a chat room. I have, on occasion, also seen the comma replaced with a dash. This is also an effect of too much time spent on the internet socializing.