Modals Deduction - Grammar Practice
A B1 lesson on modals deduction, with contextual examples, grammar guidance, controlled practice and space for written answers. Includes an answer key and teacher notes.
What’s in the worksheet?
- Contextual examples and grammar guidance
- Choose, complete and rewrite activities
- Space for written answers
- Answer key and teacher notes on page 3
Make present deductions from evidence.
Worksheet preview
Open PDF ↗A simple way to teach it
Before the lesson
Use learner pages 1–2; keep the answer key on page 3 separate until feedback.
- Read the office-light discussion and connect each conclusion to the flight, van or other clues.
- Complete the cake, cup, meeting and lights items; rewrite conclusions with must, might and can't.
- Write three clue-and-conclusion pairs, then solve the partner mystery and explain your reasoning.
Support and extension
Must here means a strong deduction, not a rule. Can't expresses a strong negative deduction; must not is not its normal equivalent in this use.
Suggested approach. Adjust the pace and number of questions to suit your class.










