En inglés, usamos "must" para expresar obligación o necesidad y "mustn't" para indicar prohibición. "Must" se utiliza cuando algo es necesario o muy importante, mientras que "mustn't" se emplea para prohibir o advertir que algo no debe hacerse.

Completa las oraciones con must y mustn't (must not), según corresponda.

1 She (not walk) alone at night in this city.
She mustn't (must not) walk alone at night in this city.
2 You (not speak) during exams.
You mustn't (must not) speak during exams.
3 He (not sit) in the snow, his pants will be wet.
He must not (mustn't) sit in the snow, his pants will be wet.
4 You (not drive) so fast through the village.
You mustn't (must not) drive so fast through the village.
5 Peter (tell) his parents that he's going abroad.
Peter must tell his parents that he's going abroad.
6 My watch (be) broken. It's stopped.
My watch must be broken. It's stopped.
7 In offering critique, (you / be) honest and kind?
In offering critique, must you be honest and kind?
8 John (not / trust) his wife, she's lying to him.
John mustn't (must not) trust his wife, she's lying to him.
9 Laws (be) respected.
Laws must be respected.
10 He (stop) smoking.
He must stop smoking.
11 You (wear) a helmet while riding a bike.
You must wear a helmet while riding a bike.
12 Students (not bring) mobile phones to the exam hall.
Students mustn't (must not) bring mobile phones to the exam hall.
13 We (follow) the rules of the road.
We must follow the rules of the road.
14 They (not eat) junk food every day.
They mustn't (must not) eat junk food every day.
15 We (be quiet) in the library.
We must be quiet in the library.

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Rodriguo

🏴󠁧󠁢󠁥󠁮󠁧󠁿 Grado de Estudios Ingleses con menciones honoríficas 🏴󠁧󠁢󠁥󠁮󠁧󠁿 Un año vivido en Estados Unidos