Let's analyze each sentence and identify the aspect of the underlined verbs:
-
She pretends to be a police officer by dressing up.
- The verb "pretends" is in the simple present tense.
- Aspect: Simple
-
Will you change the sheets tonight?
- The verb "change" is in the simple future tense.
- Aspect: Simple
-
The elephant had eaten all the hay.
- The verb "had eaten" is in the past perfect tense.
- Aspect: Perfect (more specifically, past perfect)
-
Between 1981 and 1989, Ronald Reagan was leading the United States.
- The verb "was leading" is in the past progressive (or past continuous) tense.
- Aspect: Progressive
To summarize:
- Simple
- Simple
- Perfect
- Progressive