How does present progressive translate to english?

2. what 2 parts forms the present progressive?

3. how are stem changers irregular in present progressive?

4. how are verbs like leer/caer/creer etc. irregular in present progressive?

5. what is the present participle (ando/iendo form) of "ir"?

6. what 2 parts form the imperfect progressive?

7. how do you translate the imperfect progressive to english?