I have noticed that someone has down voted a lot of my answers tonight in a period of time that is shorter than it would take to actually read the question and answer. This is troll behavior. It is childish and unacceptable behavior here. I suspect that you are the one who is down voting my answers because of a comment you added to one of them.
I really couldn't care less about the points being attached to my name. When you down vote correct answers, it does a disservice to the other users here who are looking for correct answers to their questions. We don't do homework for people. We aren't paid to show up. We volunteer our time and energy to help people learn. Having someone do your work for you is not only called cheating, it doesn't help the person. It may feel good to that person when they don't have be to do the work, but eventually they get out of college and get fired when they can't do their own work. Telling someone that we don't do homework is indeed helpful. Doing the homework for them is hurtful in the long run.
I strongly suggest that you talk to your parents, teachers, or librarian about age-appropriate ways for you to learn more about grammar. I am not comfortable answering your questions here. I cannot speak for others. I know that we tend to keep it PG here, but encouraging a 12 year old to continue participating on a public forum with adults is not something I am willing to do.
Hero of the day
Person asked the most questions.