WORD habits?!?!

ESL teachers need to be conscious about what I call students' word habits. What are these?

Well first, these are common errors of students that they always use when talking. Some of them are the famous because of (S + V) (instead of because (S + V+) ex. Because of you did not remind me, I totally forgot, before (instead of ago) ex. I arrived here 10 minutes before, the means (instead of that means) or what mean( instead of what does it mean?), and the list goes on.
The next meaning might raise a few eyebrows among teachers saying that as long as the student is correct then let's leave it at that. I don't know with you guys but sometimes, we have to discern their need. And not just that...we have to teach them how to properly use the words because whether we like it or not, most of the time, students don't blame themselves for such things. What I'm trying to say is students often use words that are synonymous to a word they already know because they want to increase their vocabulary skills. The danger is they might be using the words inappropriately. So then we have to redirect them. In addition, teaching them synonyms as you go about your business will help them use those words and make them acknowledge that need.
By then, minimizing or eliminating word habits won't just be as such, but rather, it will enhance the critical thinking of your students regarding word selection in a technical and social sense...