Time expressions
ago, before, during, while, by vs until.
The rules
- Counting back from NOW: "five years ago".
- "During" + noun; "while" + clause ("while we were watching").
- "By" = deadline (at or before); "until" = continuing up to a point ("stay until Friday").
- Ranges: "from X to Y" (or "between X and Y").
- "While" + subject + continuous clause.
- Future deadline with the future perfect: "by the end of the week".
Examples
- We moved here five years ago.
- He fell asleep during the film.
- Please submit the report by Friday.
- The shop is open from 8 am to 10 pm.
- The phone rang while I was cooking.
- I'll have finished the draft by the end of the week.
Quick check
Pick an answer to see the rule behind it.
1.We moved here five years _____.
2.He fell asleep _____ the film.
3.Which sentence is correct?
4.The shop is open _____ 8 am _____ 10 pm.
5.I'll have finished the draft _____ the end of the week.