Your teacher would not give you this assignment unless he thinks he has taught you enough that you can do it.
If you can't understand your teacher, you have bigger problems than being stuck on this assignment! You need to talk to your student advisor, head of department, or whoever. There is no point going to classes where you're not learning what you should be learning!
There is also no point waiting until you discover that you can't do an assignment then asking other people to tell you what to do. You can't ask for help when exam time comes. You are going to school to learn, right?
You need to fix the problem, and the problem seems to be that you are not learning.