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Must / Mustn't - Worked examples and exercises
Worked example
Example 1: "You _____ (must/mustn't) do your homework every day."
Answer: You must do your homework every day. "Must" expresses obligation: something you have to do.
Worked example
Example 2: "You _____ (must/mustn't) run in the corridors at school."
Answer: You mustn't run in the corridors at school. "Mustn't" expresses prohibition: something you are not allowed to do.
Worked example
Example 3: What is the difference between "must" and "should"?
Answer: Must is a strong obligation (you HAVE to do it). Should is advice (it is a good idea but not obligatory). "You must wear a seatbelt" vs "You should eat more vegetables."
Exercises- Complete with must or mustn't: "You _____ eat in the library."
- Complete: "We _____ be quiet in the hospital."
- Write 3 school rules using must and 3 using mustn't.
- Complete: "You _____ wear a helmet when you ride a bike."
- Complete: "You _____ use your phone in class."
- Correct the mistake: "You must to study for the exam."
- Choose must or should: "You _____ drink water every day." (advice)
- Write 3 rules for a swimming pool using must/mustn't.
- Translate: "Debes llegar a tiempo. No debes hablar durante el examen."
- Write 5 family rules in your house using must/mustn't.
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