must / should / can't — The Robot That Says No
Grammar: Modal verbs — must, can't, should (rules and obligation)
Free ESL grammar exercise on must / should / can't themed around the robot that says no. Printable worksheet from classplan.ai.
What's on this worksheet
A Level 2 (elementary) ESL grammar exercise on technology, practising modal verbs — must, can't, should (rules and obligation). The worksheet has a short reading excerpt, a grammar reference and graded practice items.
From the reading
ARIO also did something unusual — it refused to work when a worker forgot safety glasses. Workers must follow the rules. A robot can't ignore a safety warning. Managers should listen when workers feel controlled.
Grammar: Modal Verbs
- must — strong
- Use must for rules and obligations. You must wear a badge to enter the building.
- mustn't — not allowed
- Use mustn't when something is prohibited. You mustn't use your phone in the factory.
Sample items
- You ______ leave the machine running when you go home.
- New employees ______ read the safety handbook before they start work.
- The robot ______ see through walls, so it needs a camera.
Subscribe to access the full exercise
View Plans