Huwag paandarin ang makina maliban kung nasuri ng mekaniko ang langis.

Huwag is the standard word for a negative command in Filipino. It means don’t.

So:

• Huwag paandarin ang makina = Don’t start the engine

It is commonly followed by a verb form that expresses the action being forbidden.

Andar is the root related to movement, running, or operation.
Paandarin means make something run, set something in motion, or in this context, start or operate something.

The form has a causative idea:

• andar = run / move / function
• paandar / paandarin = make run, start, operate

So paandarin ang makina is not just run in a general sense. It means start the engine or make the engine run.

The -in here helps make the verb an object-focused form. That matches the sentence because ang makina is the thing being acted on.

In other words, the sentence is built around the engine as the grammatical focus/topic of the command:

• Paandarin ang makina = Start the engine

This is very common in Filipino: the verb form often changes depending on which noun is marked by ang.

Ang marks the noun that is in focus or serves as the grammatical subject/topic of the clause.

In Huwag paandarin ang makina, the noun receiving the action is ang makina. That is why the verb is in the corresponding object-focused form paandarin.

A helpful way to think about it:

• ang makina = the engine is the main noun being talked about in that clause
• the action is being done to it: it is the thing being started

It could. Huwag mong paandarin ang makina is also very natural and often sounds more directly addressed to a specific person: Don’t start the engine.

The version without mo sounds more general, like:

• a written instruction
• a warning sign
• a formal procedural rule

So:

• Huwag paandarin ang makina... = general instruction
• Huwag mong paandarin ang makina... = direct instruction to you

Maliban kung means unless.

So the structure is:

• Huwag ... maliban kung ...
• Don’t ... unless ...

In this sentence:

• Huwag paandarin ang makina maliban kung...
• Don’t start the engine unless...

It introduces the condition that must be met before the action is allowed.

Nasuri comes from the root suri, which means inspect, examine, or check.

Here nasuri expresses that the checking has been completed. In context, it means something like:

• has been checked
• has been inspected
• was checked

So:

• nasuri ng mekaniko ang langis = the oil has been checked by the mechanic

This works well after maliban kung, because the idea is that the oil check must already be completed before the engine is started.

Both can relate to a completed checking, but they can differ in nuance.

• sinuri more directly presents the mechanic as carrying out the action: checked
• nasuri often emphasizes the result or completed state: has been examined / was found checked / got examined

In a safety or procedural sentence like this, nasuri can sound natural because the important point is that the oil has indeed been checked before starting the engine.

For many learners, the safest understanding here is:

• nasuri ng mekaniko ang langis = the mechanic has checked the oil

Even if the exact nuance is a little different from sinuri, the practical meaning in this sentence is very close.

Because in that clause, ang langis is the noun in focus, not the mechanic.

In Filipino, when the verb is in an object-focused form like this, the doer is typically marked by ng:

• nasuri ng mekaniko ang langis
• literally: was-checked by the mechanic the oil

So:

• ng mekaniko = the mechanic is the doer/agent
• ang langis = the oil is the grammatical subject/topic of that clause

If ang mekaniko were used, the sentence structure and verb form would need to change.

For the same reason ang makina is marked with ang in the first clause: it is the grammatical focus/topic of that clause.

In:

• nasuri ng mekaniko ang langis

the thing that was inspected is ang langis. The verb form matches that structure.

So the second clause is organized around the oil as the focused noun, while the mechanic is marked with ng as the one who did the checking.

Yes, that is a very useful literal gloss.

A close literal breakdown is:

• nasuri = was checked / has been examined
• ng mekaniko = by the mechanic
• ang langis = the oil

Natural English would usually be:

• unless the mechanic has checked the oil

So the Filipino wording may feel more passive or result-focused than the most natural English translation.

Not completely. Filipino word order is more flexible than English, though some versions sound more natural than others.

The given sentence is very natural:

• Huwag paandarin ang makina maliban kung nasuri ng mekaniko ang langis.

You may also hear rearrangements for emphasis in other contexts, but the verb-first pattern is extremely common.

For a learner, the important thing is not just the order, but the markers:

• ang tells you which noun is in focus
• ng tells you the agent or a non-focus noun

Those markers often matter more than strict English-style word order.

In this context, yes, that is the most natural translation.

More literally, it means make the engine run or operate the engine. Depending on context, it could sometimes suggest:

• start
• run
• operate

But with makina, especially in a warning or instruction, start the engine is the best English choice.

Yes. That is exactly the idea.

The structure says:

• Do not start the engine
• except if / unless
• the mechanic has checked the oil

So the oil inspection is a required prior condition. The action of checking must happen before starting the engine is permitted.

A more directly addressed version would often include mo:

• Huwag mong paandarin ang makina maliban kung nasuri ng mekaniko ang langis.

That means:

• Don’t start the engine unless the mechanic has checked the oil.

The original sentence sounds a bit more like a formal instruction, notice, or manual. The version with mo sounds more like something said directly to a person.