could
Third Person
can
Past Tense
could
Past Participle
could
1
used as the past tense of ‘can’
- When I was younger, I could run faster.
- Yesterday, I could see the stars clearly in the night sky.
- Before the accident, he could lift heavy weights easily.
- When I was a child, I could climb trees without any fear.
- He could solve complex math problems effortlessly in his youth.
2
used to ask if one can do something
transitive
- Could you please pass me the salt?
- Could you help me with my homework?
- Could I borrow your pen for a moment?
- Could you tell me how to get to the nearest post office?
- Could you open the window?
3
used to show the possibility of something happening or being the case
4
used to present an offer or recommendation