Mas malaki ang kotse kaysa sa bisikleta.

Filipino often does not need a copula like is/are in simple equational or descriptive sentences.

So instead of saying something like is bigger the car, Filipino simply says:

Mas malaki ang kotse kaysa sa bisikleta.

Here, mas malaki functions as the predicate, and ang kotse is the topic or subject-like part of the sentence.

This is very normal in Filipino:

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

So the lack of is is not missing grammar; it is the normal structure.

Mas marks the comparative degree, like more or -er in English.

• malaki = big
• mas malaki = bigger / more big

So mas tells you that a comparison is being made.

Compare:

• Malaki ang kotse. = The car is big.
• Mas malaki ang kotse kaysa sa bisikleta. = The car is bigger than the bicycle.

Malaki means big or large.

A helpful thing for English speakers is that Filipino adjectives do not change for:

• gender
• number
• person

So malaki stays the same whether the noun is singular or plural, masculine or feminine.

Examples:

• Malaki ang kotse. = The car is big.
• Malaki ang mga kotse. = The cars are big.

To make it comparative, you add mas:

• mas malaki = bigger

Ang marks the noun that is the topic of the sentence. In many beginner explanations, it is often treated as the subject-like marker.

In this sentence, ang kotse is the thing being described as bigger.

So the structure is roughly:

• Mas malaki = bigger
• ang kotse = the car
• kaysa sa bisikleta = than the bicycle

You can think of it as: As for the car, it is bigger than the bicycle.

Because the two nouns have different roles in the sentence.

• ang kotse is the main topic or subject-like noun
• sa bisikleta is the noun used as the point of comparison

In comparative sentences, the thing being compared against is commonly introduced with kaysa sa.

So:

• ang kotse = the thing that is bigger
• sa bisikleta = the thing it is bigger than

This is why the markers are different.

Kaysa sa means than in comparisons.

So:

• mas malaki ... kaysa sa ... = bigger ... than ...

Examples:

• Mas matangkad siya kaysa sa kapatid niya. = He/She is taller than his/her sibling.
• Mas mahal ang karne kaysa sa isda. = Meat is more expensive than fish.

In your sentence:

• kaysa sa bisikleta = than the bicycle

In standard usage, kaysa sa is very common and natural before a noun.

So with a noun, learners should generally use:

• mas + adjective + kaysa sa + noun

Example:

• Mas mabigat ang bag kaysa sa kahon. = The bag is heavier than the box.

You may sometimes see or hear kaysa without sa, especially in certain expressions or more casual usage, but for learners, kaysa sa + noun is a very safe pattern.

Yes. You will often see both kaysa and kesa.

• kaysa is the more traditional and formal spelling
• kesa is very common in everyday writing and speech

So both of these are commonly understood:

• Mas malaki ang kotse kaysa sa bisikleta.
• Mas malaki ang kotse kesa sa bisikleta.

If you want a safer standard form for learning, use kaysa sa.

Filipino very often puts the predicate first.

So the natural order is commonly:

• Predicate + topic

Here:

• Mas malaki = predicate
• ang kotse = topic

That is why the sentence begins with Mas malaki.

This predicate-first order is extremely common in Filipino:

• Maganda ang bulaklak. = The flower is beautiful.
• Mabait ang bata. = The child is kind.

English speakers often expect The car is bigger..., but Filipino usually prefers Bigger the car... structurally, even though that sounds odd in English.

Yes. That is also correct.

The particle ay allows a different word order:

• Ang kotse ay mas malaki kaysa sa bisikleta.

This is more like a topic-first structure.

Both are correct:

• Mas malaki ang kotse kaysa sa bisikleta.
• Ang kotse ay mas malaki kaysa sa bisikleta.

The first one is often more natural in everyday Filipino, while the ay form can sound more formal, careful, or textbook-like.

Yes, in many contexts ang can make a noun definite, similar to the in English.

So ang kotse often corresponds to:

• the car
• sometimes just the car as the topic already known in context

Filipino does not have a direct article system that matches English exactly. Instead, markers like ang, ng, and sa show grammatical roles, and definiteness often comes from context.

So in a sentence like this, ang kotse is very naturally understood as the car.

No. Filipino adjectives do not agree with nouns the way adjectives do in some other languages.

Malaki does not change based on:

• singular vs. plural
• masculine vs. feminine
• animate vs. inanimate

So the adjective stays the same:

• malaking kotse
• malaking bisikleta
• malalaking kotse uses a plural marker elsewhere, not gender agreement

In your sentence, malaki stays malaki because Filipino adjectives are much less inflected than English learners may expect from other languages.

A natural way is:

Mas maliit ang bisikleta kaysa sa kotse.

Here:

• maliit = small
• mas maliit = smaller
• ang bisikleta = the bicycle
• kaysa sa kotse = than the car

So Filipino usually expresses the comparison from whichever side you want to focus on.

In this sentence, malaki most naturally refers to physical size because the comparison is between a car and a bicycle.

But malaki can also be used in other ways depending on context, such as:

• importance
• amount
• degree

Examples:

• Malaki ang problema. = The problem is big/serious.
• Malaki ang kita niya. = His/Her income is large.

Still, with kotse and bisikleta, the default reading is physical size.

A very useful pattern is:

Mas + adjective + ang + noun 1 + kaysa sa + noun 2

Meaning: Noun 1 is more [adjective] than noun 2

Examples:

• Mas mabigat ang bato kaysa sa papel. = The stone is heavier than the paper.
• Mas mabilis ang tren kaysa sa bus. = The train is faster than the bus.
• Mas mahal ang kotse kaysa sa bisikleta. = The car is more expensive than the bicycle.

This is one of the most useful comparison patterns for beginners.