Aspect Structure Example Meaning Remarks
 

Suggestion, advice

 

 

Verb dever in the futuro do pretérito do indicativo  followed by verbs in the (impersonal) infinitive.

 

Acho que ela deveria lhes dizer a verdade. I think she should tell them the truth.  
 
Frustration or criticism  

Verb dever in the futuro do pretérito do indicativo  followed by compound infinitives (ter + participle).

 

 

Ele não deveria ter bebido tanto.

 

 

He shouldn't have drunk so much.

 

 
 

Eu sei que eu deveria ter sido mais educado com ela.

 

 

I know I should have been more polite to her.

 

 
 

Speculation, conclusion

 

 

Verb dever followed by verbs in the (impersonal) infinitive.

 

João deve ser ladrão de bancos. Joao must be a bank robber.  
 

Verb dever followed by compound infinitives (ter + participle).

 

Ele deve ter sido muito convincente. He must have been really convincing.

 


 

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