Portuguese Phrase
Avisa o anfitrião sobre as tuas alergias.
Meaning
The sentence is a polite command telling someone to let the host know about any allergies they have. It’s useful when you’re staying at a friend’s house, an Airbnb, or any accommodation where food or environment could trigger an allergic reaction.
When to use
Use this phrase before arriving at a new place, during check‑in, or when you notice a potential allergen (e.g., nuts, gluten, pet dander). It shows respect for both your health and the host’s preparation.
✦Grammar Breakdown
Avisaoanfitriãosobreastuasalergias
Imperative (Avisa)
‘Avisa’ is the affirmative imperative of the verb *avisar* (to inform/notify) for the second‑person singular (tu).
Definite article (o / as)
‘o’ and ‘as’ are the masculine singular and feminine plural definite articles, matching the gender and number of the nouns they accompany.
Possessive adjective (tuas)
‘tuas’ is the second‑person singular feminine plural possessive, agreeing with ‘alergias’.
Preposition (sobre)
‘sobre’ means ‘about/on concerning’ and introduces the topic of the information.
Noun (anfitrião, alergias)
‘anfitrião’ = host; ‘alergias’ = allergies. Both are common in travel‑related conversations.
🗨In Conversation
Avisa o anfitrião sobre as tuas alergias.
Notify the host about your allergies.
Claro, já lhe digo. Você tem alguma restrição específica?
Sure, I’ll tell them right away. Do you have any specific restrictions?
✕Common Mistakes
Avise o anfitrião sobre as tuas alergias.
‘Avise’ is the formal imperative (você). Using it with ‘tuas’ mixes registers.
Avisa o anfitrião sobre as seus alergias.
‘Seus’ is the possessive for ‘you (formal)’. It doesn’t agree with the informal ‘tu’ used in the rest of the sentence.
Avisa o anfitrião sobre as tuas alergia.
‘Alergia’ is singular; the sentence talks about multiple allergies, so it must be plural ‘alergias’.
↔Alternatives
Informa o anfitrião das tuas alergias.
Inform the host of your allergies.
Comunica ao anfitrião as tuas alergias.
Communicate your allergies to the host.
Diz ao anfitrião que tens alergias.
Tell the host that you have allergies.
Cultural Tip
In Portuguese‑speaking countries hospitality is taken seriously. Guests are expected to be open about health needs, and hosts usually appreciate the heads‑up so they can prepare safe meals or adjust the environment. Using the informal ‘tu’ form (as in ‘tuas’) is common among friends, younger travelers, or in casual settings like Airbnb; in more formal contexts you might switch to ‘você’ and say ‘as suas alergias’.