Of course there are, and it happens constantly with any of the language, as with others, sometimes from their own "wisdom", sometimes the Park, sometimes little experience of the use of one or another language. This is a normal phenomenon. Eventually, of course, less and less, but still happens. How to treat? - write, write and more time to write, and most importantly don't just write, but to understand what you write, how to write... nothing to write: think of a goal, create a website - svarstyti it will be filled with interactive, yet do it the experience comes.