I don't know what happened 
I do english course in mornings 

She doesn't know what happened.
She does her homework at weekends.

I didn't do it!
I did my homework.

I will make a test on saturday
I won't play soccer with my friends. :(

I can do that!
I can't stay here..

You should know: Your mother loves you.
You shouldn't make your bed.

You   must listen to  me!
You mustn't listen to her!
She does samba lesson every day -> Ela faz aula de samba todo dia
Paul did not go to series. -> Paulo não passou de série.