Tenga for polite form?

Question

so in my books i just see "tiene frio" for the polite form, even though tenga is the subjuntivo form, so is it tiene and why or is it tenga and they probably made a mistake?

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Answer 1

I wouldn't call it the "polite form", but it captures the bulk of the meaning. You have "tú" and "usted" which both mean "you". Usted is more formal and tú is more familiar. To say "tiene frío" would mean "he's/she's/you're cold". This could also be asked in the form of a question "¿Tiene frío?" If you said "Tienes frío" it could only mean "you're cold".

If you say "Tenga frío", people might think you are commanding them to be cold in a formal way. However, if you say, "Que tenga frío", people would probably think that you are hoping that they will be cold.

The Subjunctive has to be triggered by other parts of the phrase. (such as the "que" in the phrase above)

Here's an article from SpanishDict that will cover the Subjunctive and answer questions for you faster than I can type: Spanish Subjunctive