Verb 'to be': present tense negative:
I am not a good student. I 'm not learning quickly.
You are not either, but you aren't discouraged.
This web site is not bad. It 's not the best, but it isn't the worst either.
We are not quick learners, but we're not slow either.
My friends are not learning quickly. They 're not too happy.
There is not much animation on this site. There isn't enough for me.
There are not a lot of games. There aren't enough for me.