The key answer of exercise 2
The key to exercise solutions in chapter Workbook - You live and learn for the textbook Performer B1 Phases, Vol. 1 with authors M. Spiazzi, M. Tavella, M. Layton, E. Fiordiliso from Zanichelli
Question
Revise the grammar reference and complete the grammar map.
Answer
MUSTN'T
To talk about a prohibition imposed by rules and laws.
Example:
- You mustn't take library books without permission.
To express a prohibition coming from the speaker.
Example:
- You mustn't touch the artwork; it's very delicate.
To express a personal prohibition or responsibility.
Example:
- I mustn't forget to bring my packed lunch to school.
DON'T / DOESN'T HAVE TO
To express the absence of obligation to do something or when something is not necessary.
Example:
- Susan doesn't have to hand in the project now, as the deadline is next week.
- You don't have to attend the meeting if you're not feeling well.
DON'T / DOESN'T NEED TO
To say that something is not necessary (there is no obligation, but you can if you want)
Example:
- You don't need to stay in the classroom during the break.
- She doesn't need to apologize; it wasn't her fault.
- You needn't worry about the details; I'll take care of everything.
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