Common English mistakes: repair one pattern at a time
An error becomes useful practice when you can explain the repaired form and use it again in a new situation.
Use the pattern in context
Read the whole sentence before changing a word. Check whether the problem concerns a verb pattern, a countable noun or a question. Does she works here? becomes Does she work here? because does already carries the singular present marking. I need an advice becomes I need some advice, or I need a piece of advice. Keep the intended message while fixing the form.
Examples to compare
- Question: Does he live nearby?
- Uncountable noun: I need some information.
- Verb pattern: We decided to leave.
Limits and useful distinctions
An unfamiliar dialect or an informal construction is not automatically a mistake. The practice bank targets stated standard patterns and closed contexts; it does not grade arbitrary writing. A correction that changes the meaning is not a successful repair, even when the new sentence is grammatical.
Check your understanding
Repair: Did you bought the ticket?
Reveal the answer and reason
Did you buy the ticket?
Did is followed by the base form buy. The past marking is already in did. Read the guide
Try a new example with the same purpose. Check that your version keeps the intended meaning and grammatical pattern.