Cool MateMust vs Ought vs Shall vs Should
Quando usar cada um em inglês, com significado, registro e exemplos.
Must
Bloco de alta frequênciaA1
Ought
FormalTop 3000 (comum)B1
Shall
FormalTop 5000 (bastante comum)A2
Should
Top 1000 (muito comum)A1
| Must | Ought | Shall | Should | |
|---|---|---|---|---|
| Pronúncia | 🇬🇧 /["/məst//mʌst/","/ˈmʌsnt/"]/🇺🇸 /["/məst//mʌst/","/ˈmʌsnt/"]/ | 🇬🇧 //ɔːt//🇺🇸 //ɔt// | 🇬🇧 /["/ʃəl//ʃæl/","/ʃɑːnt/","/ʃʊd/"]/🇺🇸 /["/ʃəl//ʃæl/","/ʃænt/","/ʃʊd/"]/ | 🇬🇧 /["/ʃəd//ʃʊd/","/ˈʃʊdnt/"]/🇺🇸 /["/ʃəd//ʃʊd/","/ˈʃʊdnt/"]/ |
| Significado | Algo que é necessário ou muito importante.Something that is necessary or very important. | deveria ou tem que fazer algoshould or must do something | Usado para indicar ação futura ou para pedir conselhos ou sugestões.Used to indicate future action or to ask for advice or suggestions. | used to tell someone what is the right thing to do |
| Exemplo | You must finish your homework before playing outside. | You ought to apologize for your mistake. | This time next week I shall be in Scotland. | You should study for the exam to do well. |
| Registro | Neutro | Formal | Formal | Neutro |
| Quão comum | Bloco de alta frequência | Top 3000 (comum) | Top 5000 (bastante comum) | Top 1000 (muito comum) |
| Nível CEFR | A1 | B1 | A2 | A1 |
| Colocações | must see, must do, must have, must remember | ought to know, ought to be, ought to do | shall we dance, you shall not pass, shall I compare thee, shall I help you, shall we start | should do, should have, should not, should consider, should remember |
| Antônimos | can, may, might | ought not, should not | refuse, decline | must not, shall not |
| Erros comuns | Using 'must' in situations where 'have to' is more suitable., Confusing 'must' with 'might' or 'may', which imply possibility instead of necessity., Using 'must' with the gerund form instead of the base form of the verb. | Confused with 'should' – they are similar but 'ought' sounds more formal., Using 'ought' without 'to', e.g., 'You ought study.' which is incorrect., Incorrectly using 'ought' in negative forms like 'oughtn't' in some dialects. | Using 'shall' in first person only — 'shall' is typically used with 'I' or 'we' and not with other subjects., Confusing 'shall' with 'should' — 'shall' indicates future intent, while 'should' often indicates obligation., Using 'shall' in negative forms incorrectly — remember, it's not commonly used for negatives. | 'Should' is often confused with 'must,' leading to weaker advice than intended., Forget to follow 'should' with the base form of the verb, e.g., saying 'should goes' instead of 'should go.', Using 'should' for past events instead of 'should have.' |
| Notas de uso | Use 'must' para dar conselhos fortes ou fazer recomendações fortes. Evite usá-lo em conversas casuais onde 'should' pode ser mais apropriado.Use 'must' when giving strong advice or making strong recommendations. Avoid using it in casual conversations where 'should' might be more appropriate. | Use 'ought' para aconselhar ou sugerir. Soa mais formal que 'should' e é menos comum na conversa do dia a dia.Use 'ought' in advising or suggesting. It sounds more formal than 'should' and is less common in everyday conversation. | Comumente usado em contextos formais, como documentos legais ou discursos oficiais. É mais usado no inglês britânico do que no inglês americano. Em contextos informais, 'will' é preferido.Commonly used in formal contexts, such as legal documents or official speeches. It's more often used in British English than in American English. In informal contexts, 'will' is preferred. | Use 'should' for advice, suggestions, or expectations. It's appropriate in both spoken and written English, but avoid it in very formal contexts where 'ought to' might be preferred. |
Veja em clipes reais
Perguntas frequentes: Must vs Ought vs Shall vs Should
Qual é a diferença entre Must, Ought, Shall e Should?
Must: Something that is necessary or very important. Ought: should or must do something Shall: Used to indicate future action or to ask for advice or suggestions. Should: used to tell someone what is the right thing to do
Qual é mais avançada: Must, Ought, Shall e Should?
Ought é o nível mais alto, em B1, na escala CEFR.
Must, Ought, Shall e Should estão no mesmo nível CEFR?
Must: A1, Ought: B1, Shall: A2, Should: A1 na escala CEFR.
Pode mostrar um exemplo de cada?
Must: You must finish your homework before playing outside. Ought: You ought to apologize for your mistake. Shall: This time next week I shall be in Scotland. Should: You should study for the exam to do well.
Posso usar Must, Ought, Shall e Should de forma intercambiável?
Nem sempre. Must, Ought, Shall e Should são relacionadas e às vezes se sobrepõem, mas diferem em registro, frequência e uso, então trocar uma pela outra pode mudar o sentido ou o tom. Veja as diferenças acima antes de substituir.