Quero ajustar a intensidade agora.

Quero is the first-person singular present tense form of the verb querer, which usually means to want.

• eu quero = I want
• So Quero ajustar a intensidade agora literally starts as I want to adjust...

In Portuguese, the subject pronoun eu is often omitted because the verb form already shows who the subject is. So:

• Eu quero ajustar...
• Quero ajustar...

both mean the same thing here.

Because after quero (I want), Portuguese normally uses another verb in the infinitive:

• quero ajustar = I want to adjust
• quero mudar = I want to change
• quero ver = I want to see

This works much like English want to + verb.

So the structure is:

• quero + infinitive

Yes, ajustar is very close to English adjust. It usually means:

• to adjust
• to set
• to fine-tune
• sometimes to adapt depending on context

In this sentence, ajustar a intensidade most naturally means something like:

• adjust the intensity
• set the intensity
• fine-tune the intensity

It suggests changing the level of something so it is more suitable.

Portuguese often uses the definite article more than English does.

• a intensidade = the intensity

Even when English might say just intensity, Portuguese commonly prefers the article if the speaker means a specific intensity in the situation.

For example:

• Quero ajustar a intensidade da luz. = I want to adjust the light intensity.
• A intensidade está muito alta. = The intensity is too high.

Using a here sounds natural and complete.

Great question. In Portuguese, a can have different jobs depending on context.

Here, a is the feminine singular definite article, meaning the:

• a intensidade = the intensity

But a can also be a preposition, often meaning to:

• Vou à escola. = I’m going to school.

You can tell the difference by what comes next:

• If it comes before a noun and matches its gender/number, it may be an article.
• Here intensidade is a feminine singular noun, so a is clearly the.

Yes, intensidade is feminine, which is why it uses a:

• a intensidade

Many nouns ending in -dade are feminine in Portuguese, such as:

• a cidade = the city
• a verdade = the truth
• a possibilidade = the possibility

So intensidade follows a very common pattern.

Agora means now.

In this sentence:

• Quero ajustar a intensidade agora. = I want to adjust the intensity now.

Placing agora at the end is very natural. Portuguese is fairly flexible with adverbs like this, so you may also see:

• Agora quero ajustar a intensidade.
• Quero agora ajustar a intensidade.

But the original version sounds simple and natural in everyday speech.

Not literally. Quero specifically means I want.

If you wanted to say I need to adjust the intensity now, Portuguese would more naturally use:

• Preciso ajustar a intensidade agora.

That said, in real-life situations, quero can sometimes sound like a decision or intention, so depending on context, it may feel close to I want to do it now or I’m going to do it now, but the direct meaning is still I want.

A rough pronunciation guide for Brazilian Portuguese is:

• KEH-roh ah-zhoo-STAR ah een-ten-see-DAH-jee ah-GOH-rah

A few helpful notes:

• quero: the qu sounds like k
• ajustar: the j sounds like the s in measure or the zh sound
• dade at the end of intensidade in Brazil often sounds like DAH-jee
• r at the end of ajustar is softer in many Brazilian accents, sometimes almost like a light h

Pronunciation varies by region, but this is a useful general approximation.

Yes, absolutely.

• Quero ajustar a intensidade agora.
• Eu quero ajustar a intensidade agora.

Both are correct.

Portuguese often drops subject pronouns when they are not needed. Adding eu can:

• add emphasis
• make the subject clearer
• sound slightly more explicit

So eu is optional here.

No, Portuguese allows some flexibility, but the original order is very natural:

• Quero ajustar a intensidade agora.

Other possible orders include:

• Agora quero ajustar a intensidade.
• Quero agora ajustar a intensidade.

These are also understandable, but they can slightly shift emphasis:

• Agora quero... emphasizes now
• Quero agora... can sound a little more marked or deliberate

For a learner, the original version is a very safe and natural pattern.

Yes, but the meaning changes slightly.

• ajustar a intensidade = adjust the intensity, fine-tune it
• mudar a intensidade = change the intensity

So:

• ajustar suggests a controlled or precise change
• mudar is broader and simply means making it different

If you are talking about settings, controls, brightness, sound, workout level, or machine power, ajustar often sounds more specific and natural.