E04
core
Speaker stance
Modality
Obligation Aura
Must it happen? Is it required?
basic
Modal verb
Deontic modality
Obligation
Significado
A modal layer expressing necessity, duty, rule, requirement, pressure, or unavoidable need.
Como identificar
Ask whether someone has to do something.
Exemplos
Palavras
must|have to|need to|required
Frases
must leave|have to work|need to study
Frase
You have to finish this today.
Visual guide
Basic shape
Obligation layer:
[person] → [event]
↑
rule / duty / need
must / have to / need to
You have to finish this today.
Compare shape
Same force, many shapes: EN modal: must leave EN phrase: have to work Verb: need to study Impersonal: required Particle/suffix: WORK + OBLIG
Vista por língua
Na tua língua materna
Português
Presença
strong
Importância
Obligation uses precisar, ter que, dever, é preciso, and é necessário que.
Eu preciso sair agora.
I need to leave now.
Na tua língua de aprendizagem
Inglês
Presença
strong
Dificuldade
English obligation uses must, have to, need to, should, and be supposed to, with important nuance differences.
You must wear a seatbelt.
must = obligation
Dificuldade comum de quem aprende
Learners often confuse must, have to, should, and need to.
Same block, different coding
Both languages use this block strongly, but they signal it differently. Focus on form changes, not only meaning.