Examples of using "Kullanmazsan" in a sentence and their english translations:
If you abuse your computer, it won't work well.
Knowledge gets rusty if you don't use it.
You'll burn your hands if you don't use a potholder or oven mitts!
If you don't use a condom during sex, you can catch a disease.
If you don't practice a word at least once, you can't learn it.