Question 1

Why does the sentence use o certo instead of a coisa certa?

Accepted Answer

Both are perfectly correct! Using o before a masculine singular adjective is a very common way to turn that adjective into an abstract noun. Here, o certo translates to 'the right' but means 'the right thing'. It is often preferred because it is shorter and sounds very natural in Portuguese.

Question 2

Wait, dilema ends in the letter a. Why do we use the masculine neste instead of the feminine nesta?

Accepted Answer

Even though it ends in the letter a, dilema is a masculine noun (o dilema). This is a common exception for Portuguese words of Greek origin ending in -ma, such as o problema, o sistema, and o tema. Because it is masculine, the preposition em combined with este becomes neste.

Question 3

Why is there no preposition after difícil, such as difícil de saber?

Accepted Answer

When using an impersonal structure starting with é (it is), the adjective connects directly to the infinitive verb. You say é difícil saber (it is hard to know). You only use de if a specific noun is the subject before the adjective, for example: o dilema é difícil de entender (the dilemma is hard to understand).

Question 4

Can I use other adjectives like this with just the article o?

Accepted Answer

Absolutely! This nominalization works with almost any adjective to express an abstract concept. For example, o bom (the good thing), o pior (the worst part), or o mais importante (the most important thing).

Neste dilema, é difícil saber o certo.

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