I'm planning to watch television instead of doing my homework.
Don't you have a lot of homework to do?
I know, but I want to watch television first.
You may be tired, but you need to finish what you have to do first. Homework is important, and being a student is your job. The more you procrastinate the less chance you'll have of finishing it on time.
Tv is way more fun and important than homework.
TV will always be there. If you finish your homework first, then you can watch and enjoy TV.