Novembro e dezembro são muito frios.

Breakdown of Novembro e dezembro são muito frios.

ser
to be
e
and
muito
much / very
frio
cold
novembro
November
dezembro
December

Questions & Answers about Novembro e dezembro são muito frios.

Why aren't novembro and dezembro capitalized?
In Portuguese, the months of the year are always written with lowercase letters, unlike in English. They are only capitalized if they are the very first word of a sentence.
Since being cold is a weather condition, why do we use são instead of a form of estar?
While we use estar for temporary daily weather (like saying the weather is cold today), we use são (from the permanent verb ser) here. This is because being cold is a permanent, general fact about these specific months in Portugal.
Why is it frios and not just frio?
Frios is an adjective describing the months. Since it describes two things together (novembro and dezembro), it must be in its plural form to match them.
If frios is plural, why does muito stay singular?
Here, muito means very and acts as an adverb describing how cold it is. When muito means very, it never changes its form. It only changes to muitos or muitas (many) when it is used to describe a noun.

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