Como usar Must e Mustn't MUST Significa dever.
Após MUST o verbo é usado no infinitivo sem TO . Exemplo: You must go .
(Você deve ir.)
Must fica igual para todos os sujeitos:
Afirmativa
Negativa
Interrogativa
I must
I must not
(mustn’t)
Must I?
You must
You must
not (mustn’t)
Must you?
He must
He must not
(mustn’t)
Must he?
She must
She must
not (mustn’t)
Must she?
It must
It must not
(mustn’t)
Must it?
We must
We must not
(mustn’t)
Must we?
You must
You must
not (mustn’t)
Must you?
They must
They must
not (mustn’t)
Must they?
MUST é usado para:
1) Necessidade , Obrigação ou Dever
Exemplos:
I must go now.
(Eu devo ir agora.)
Plants must have light and water to grow.
(As plantas devem ter luz e água para crescer.)
You must wear a uniform.
(Você deve usar um uniforme.)
They must follow the rules. (Eles devem seguir as regras.) 2) Dedução
Exemplo:
He worked hard. He must be tired.
(Ele trabalhou muito. Ele deve estar cansado.)
3) Recomendação ou Conselho Must pode ser usado para uma recomendação ou conselho mais forte e intenso que should .Exemplos: The cakes here are delicious. You must try one. (Os bolos aqui são deliciosos. Você deve experimentar um.) You must see that movie. It’s fantastic.
(Você deve assistir esse filme. É fantástico.)
4) A forma negativa MUSTN'T expressa Proibição .
Exemplos:
You must not talk to strangers.
(Você não deve falar com desconhecidos.)
We mustn't make noise. (Não devemos fazer barulho.)
You mustn’t use your phone while you are driving.
(Você não deve usar seu telefone enquanto estiver dirigindo.)
Students mustn’t talk during the exam.
(Os alunos não devem falar durante a prova.)
VIDEO
EXERCISES
1) Escolha a opção correta: Must ou Mustn't
a) You mustn't must eat vegetables.
b) People mustn't must smoke.
c) It's late. You mustn't must make so much noise.
d) You mustn't must be late for school.
e) We mustn't must be kind to others.
f) He mustn't must drive too fast.
g) She mustn't must clean her room.
h) You mustn't must chew gum in class.
i) I mustn't must help in the house.
j) You mustn't must pollute the water.
Veja também outros verbos modais: Can Resumo dos Verbos Modais Respostas dos Exercícios: Must e Mustn't a) must b) mustn't c) mustn't d) mustn't e) must f) mustn't g) must h) mustn't i) must j) mustn't