Student or Learner
Is it true that "could" can't be used for past achievements like in the following?
I could get a scholarship last year.(x) - according to a grammar book.
I was ablt to get a scholarship last year.(0)
I never knew "could" can't be used for past achievements, Is it so strict or flexible?
We can use could for a general ability: I could speak French and German before I was four.
We can't use could for something that was done on a single occasion:
I could finish the report yesterday.
We would use another verb, such as manage to or be able to.
Could can be used in the negative for both:
I couldn't speak Russian until I was ten.
I couldn't finish the report yesterday.