Past Simple
+ Sheila watched a movie yesterday.
- Sheila didn't watch a movie yesterday.
? Did Sheila watch a movie yesterday?
Irregular verbs:
+ She slept the whole night.
- She didn't sleep the whole night.
? Did she sleep the whole night
Past Continuous
+ Sheila was playing the guitar at 8 o'clock.
- Sheila wasn't playing the guitar at 8 o'clock.
? Was Sheila playing the guitar at 8 o'clock?