Please can I use the following modals to express the unknown future?
- Next year by this time I could have traveled to York.
- Next year by this time I would have finished school.
- Next year by this time I should have collected my certificate.
- Next year by this time I shall/can have collected my books.
Please I want to know which of them could be used, and wouldn’t be grammatically wrong. Thanks
To me, all these sound more natural as “By this time next year…”.
“By this time next year I could have verb-ed…” is possible, but “travelled to York” does not seem a sufficiently notable event, or sufficiently lasting achievement, to be a likely completion of the sentence.
I cannot think of a situation in which “By this time next year I would have verb-ed…” would be used.
“By this time next year I should have verb-ed…” is OK when describing expectations.
“By this time next year I shall have verb-ed…” is not very natural or common in modern English. To describe things that are certain (or as certain as the future can be) use “… I will have…”.
“By this time next year I can have verb-ed…” does not sound like good English.