1)
- afirm:
I am strudying for a chemestry test right now.
-trecut:
I studied for a chemestry test yesterday.
-neg:
I didn't study for the chemestry test.
-interogativ:
Did I study for the chemestry test?
2)
-afirm:
My dad is helping my mom with the work in the garden.
-trecut:
My dad helped my mom with the work in the garden.
-neg:
My dad didn't help my mom in the garden.
-interogativ:
Did my dad helped my mom in the garden?