Suriin ang preno.

Suriin is an imperative (command) form of the verb suri (to examine / inspect / check).

More specifically, it uses the -in verb form, which often puts focus on the thing being acted on. So suriin ang preno is literally something like inspect the brake(s), with the brake(s) as the focused object.

Ang marks the noun that is in focus in the sentence.

In Suriin ang preno, the verb form suriin is an object-focused or patient-focused form, so the thing being checked is marked by ang.

So:

• suriin = inspect/check
• ang preno = the brake / the brakes

This pairing is very common in Filipino:

• object-focused verb + ang
  • thing affected

Because the verb form suriin calls for the thing being examined to be marked with ang, not ng.

Compare:

• Suriin ang preno. = Inspect the brake(s).
• Magsuri ng preno. = Do an inspection of brake(s) / Inspect brake(s)

Both can be natural in some contexts, but they use different verb patterns.

A useful beginner rule:

• If the verb is in an -in form like suriin, the direct target is often marked with ang.
• If the verb is in a mag- form like magsuri, the non-focus object is often marked with ng.

It can be understood as either brake or brakes, depending on context.

Filipino nouns usually do not have separate singular and plural forms the way English does. If the speaker specifically wants to show plurality, they can use mga:

• ang preno = the brake / the brakes
• ang mga preno = the brakes

In real-life usage, preno in this kind of sentence will often be understood as the brakes.

It is a borrowed word, historically from Spanish freno.

Borrowed words are very common in Filipino, especially for everyday objects, technology, vehicles, and household items. So preno is completely normal and common.

A simple pronunciation guide is:

• suriin ≈ soo-ree-EEN
• ang ≈ ahng
• preno ≈ PREH-no

A slightly more natural breakdown:

• su-ri-in
• ang
• pre-no

Notes:

• ng in ang is pronounced like the ng in song
• r is usually tapped lightly
• vowels are generally clear and pure, not heavily reduced like in English

Because it comes from the root suri plus the suffix -in.

So:

• suri
  • -in → suriin

This is a normal spelling result in Filipino. Both i vowels are still part of the word, so the word is pronounced in three syllables: su-ri-in.

It sounds neutral to formal and is very natural in instructions, manuals, warning labels, checklists, and workplace speech.

It can sound a bit direct in everyday conversation because it is a plain command.

For example:

• on a checklist: Suriin ang preno.
• in a manual: Suriin ang preno bago bumiyahe.
• in conversation, a softer version might be better

You can make it more polite by adding po or by changing the wording.

Examples:

• Suriin po ang preno.
• Pakisuri ang preno. = Please inspect the brake(s).
• Pakisuri po ang preno.

If you are speaking to a group or showing extra respect, you might also hear forms with ninyo:

• Pakisuri po ninyo ang preno.

Yes.

Examples:

• Suriin mo ang preno. = You check the brake(s).
• Suriin ninyo ang preno. = You all / you (formal plural) check the brake(s).

Without mo or ninyo, the sentence is still complete. Filipino often leaves the subject understood when giving commands.

Yes, but Suriin ang preno is the most straightforward order.

You may also hear:

• Ang preno, suriin.

That version is more marked and can sound like you are emphasizing the brakes in particular.

For learners, the basic order to remember is:

• Verb + ang-marked noun

So:

• Suriin ang preno.

Not exactly.

• tingnan = look at / check
• suriin = inspect / examine carefully

Suriin often sounds more thorough or technical. If someone says Suriin ang preno, it suggests a proper inspection, not just a quick glance.

So in a mechanical or safety context, suriin is often a very good choice.

Filipino does not have articles that work exactly like English the and a.

Instead, markers like ang and ng show the grammatical role of the noun. Depending on context, ang preno may be translated as:

• the brake
• the brakes
• sometimes just brakes

So ang is not a direct equivalent of English the, even though English translations often use the.

Yes. The punctuation changes the tone slightly.

• Suriin ang preno. = plain instruction / command
• Suriin ang preno! = stronger, more urgent command

In manuals or written instructions, the period is very common. In emergencies or warnings, an exclamation mark may fit better.