There are many ways. You can search for online games that may help improve your grammar, or search for apps and/or websites who really helps you with that. Also, try reading English (English ONLY. Classic books are better.) books. That was how my grammar improved, because a.) there are many words I don't know that I can search and b.) I kind of got used to what I'm reading so I can feel if something is wrong or not. Hope this helps :) xx