Mabilis ang paghahatid.

Because Filipino very often puts the predicate first.

In Mabilis ang paghahatid, the word mabilis is the predicate, and ang paghahatid is the topic or subject-like part. So the structure is roughly:

• Mabilis = fast
• ang paghahatid = the delivery / the act of delivering

This predicate-first order is very natural in Filipino.

A more English-like order is also possible:

• Ang paghahatid ay mabilis.

That means the same thing, but Mabilis ang paghahatid is usually more natural in everyday speech.

Filipino often does not use a separate word for is/am/are in simple descriptive sentences.

So:

• Mabilis ang paghahatid. = The delivery is fast.

There is no need to insert a verb meaning is.

This is very common in Filipino:

• Maganda ang bahay. = The house is الجميل / The house is beautiful.
• Malamig ang tubig. = The water is cold.

So in this sentence, mabilis directly describes ang paghahatid without a separate copula.

Ang is a marker that points to the noun phrase being talked about as the topic of the sentence.

Here:

• ang paghahatid = the delivery / the act of delivering

It does not work exactly like English the, although in many translations it may look similar.

In this sentence, ang tells you that paghahatid is the thing being described as mabilis.

Very roughly:

• Mabilis = what is being said
• ang paghahatid = what it is being said about

Paghahatid is a noun formed from the root hatid, which relates to bringing, delivering, taking someone/something to a destination, or delivery.

So paghahatid means something like:

• delivery
• the act/process of delivering
• transport/delivery service, depending on context

In this sentence, it most naturally means delivery as a process or service.

It is built from the root hatid using a common noun-forming pattern:

• hatid = deliver / bring / escort
• pag-
  • reduplication of the first syllable + root

So:

• hatid → paghahatid

This pattern often creates a noun referring to an action, process, or activity.

Compare similar formations:

• lakad → paglalakad = walking
• kain → pagkain = food / eating, depending on context
• sulat → pagsusulat = writing

So paghahatid is the action/process noun from hatid.

Because hatid is the root word, while paghahatid more clearly refers to the act or process of delivering.

Using hatid by itself can work in some contexts, but it does not always sound as clearly like an abstract action noun.

For example:

• mabilis ang paghahatid = the delivery process/service is fast

That sounds very natural when talking about shipping, courier service, or delivery performance.

So paghahatid is a good choice when you mean delivery as an activity or service.

Because mabilis is being used as the predicate, not directly modifying a noun inside the same noun phrase.

In:

• Mabilis ang paghahatid

mabilis stands on its own as the predicate: Fast is the delivery.

But if you want mabilis to directly modify paghahatid inside a noun phrase, then you use the linker na:

• mabilis na paghahatid = fast delivery

So compare:

• Mabilis ang paghahatid. = The delivery is fast.
• Gusto ko ng mabilis na paghahatid. = I want fast delivery.

Yes. That is correct.

• Mabilis ang paghahatid.
• Ang paghahatid ay mabilis.

Both mean the same thing.

The version with ay is often:

• a bit more formal,
• a bit more deliberate,
• sometimes used for emphasis or in writing.

In everyday speech, the predicate-first version Mabilis ang paghahatid is usually more common.

Here it functions like an adjective/predicate adjective.

It describes paghahatid:

• mabilis = fast
• ang paghahatid = the delivery

So the whole sentence means the delivery has the quality of being fast.

In other contexts, mabilis can also feel adverb-like in English translation, especially with verbs:

• Mabilis siyang tumakbo. = He/She ran quickly.

But in Mabilis ang paghahatid, it is describing a noun phrase, so learners usually understand it best as an adjective.

Usually it refers to delivery in general or to the delivery service/process, unless the context makes it specific.

Because ang paghahatid can mean:

• the delivery process,
• the delivery service,
• a particular delivery that both speakers know about.

So context decides.

For example:

• In a review of a courier company, Mabilis ang paghahatid probably means Their delivery is fast.
• If you are waiting for a package, it could mean The delivery is fast in that specific case.

No explicit tense is marked here.

Mabilis ang paghahatid is a descriptive sentence, so it simply states a quality. Depending on context, it could mean:

• delivery is fast
• the delivery was fast
• the delivery has been fast

If you need time to be clearer, you usually add context words:

• Mabilis ang paghahatid kahapon. = The delivery was fast yesterday.
• Karaniwang mabilis ang paghahatid. = Delivery is usually fast.

You can negate it with hindi:

• Hindi mabilis ang paghahatid. = The delivery is not fast.

This is the normal way to negate descriptive sentences like this.

A simple pronunciation guide is:

• Mabilis ang paghahatid
• roughly: mah-BEE-lis ang pag-ha-HA-tid

A few notes:

• ng in ang is pronounced like the ng in sing
• hatid has a clear h
• stress is commonly heard on -bi- in mabilis and on ha in paghahatid

You do not need to pronounce anything like an English is between the words.

Yes, depending on context.

Paghahatid can cover ideas such as:

• delivery
• shipping
• dispatch/delivery service
• the act of bringing something somewhere

So if the context is online shopping or courier service, Mabilis ang paghahatid can naturally be understood as:

• Shipping is fast
• Delivery is fast

Because ang paghahatid is the topic of the sentence, not a non-topic noun.

In this kind of basic descriptive sentence, the thing being described is commonly marked by ang:

• Mabilis ang paghahatid.

If you used ng, it would create a different grammatical structure and would not fit this sentence.

So for a learner, the simplest way to understand it is:

• ang marks the main noun phrase being described here

Yes, it is very natural, especially in contexts like:

• online shopping
• courier services
• restaurant delivery
• customer reviews
• business descriptions

For example, someone might say it when reviewing a service:

• Mabilis ang paghahatid. Maayos din ang packaging.
• The delivery is fast. The packaging is good too.

So this is a very useful real-life sentence pattern.