Bumi ini besar.

Malay usually does not use a verb like to be in simple sentences of identification or description.

So instead of saying:

Bumi ini is besar

Malay simply says:

Bumi ini besar

This is completely normal and natural. A very common sentence pattern is:

noun + description

For example:

Rumah itu besar = That house is big
Dia tinggi = He/She is tall

So in your sentence, besar works as the predicate, and no separate is is needed.

In Malay, demonstratives like ini (this) and itu (that) usually come after the noun.

So:

Bumi ini = this Earth / this world
rumah ini = this house
buku itu = that book

This is one of the first word-order differences English speakers notice, because English puts this before the noun, but Malay normally puts ini after it.

It can depend on context.

bumi can mean:

• earth in the sense of the planet
• land
• soil/ground

With a capital letter, Bumi often suggests the planet Earth. In a sentence like Bumi ini besar, it is likely being understood as the Earth / this Earth / this world.

So Malay relies a lot on context here, just as English sometimes does with words like earth.

Capitalizing Bumi suggests it is being treated as a proper name: Earth, the planet.

Compare:

bumi = earth/land/soil in a general sense
Bumi = Earth, the planet

In actual modern usage, capitalization may not always be perfectly consistent, especially in informal writing, but capital B usually points to the planetary meaning.

Malay does not have articles like a, an, and the in the same way English does.

So Bumi can mean:

• Earth
• the Earth
• sometimes just earth/land, depending on context

The listener figures out the intended meaning from the situation or from other words in the sentence.

That means a Malay sentence can often be more flexible than an English one, while English requires you to choose something like the Earth or this Earth.

Yes, it can mean this Earth or this world, and it is grammatical.

However, in many contexts, if you just mean the planet in general, simply Bumi may already be enough. Adding ini can make it feel more specific or emphatic, something like:

• this Earth
• this world we live on

So Bumi ini besar is possible, but it may sound slightly more pointed than just talking about Earth in a general textbook way.

Yes, besar means big / large, and here it functions as the description of the subject.

The structure is:

Bumi ini = subject
besar = predicate adjective/description

So the sentence means:

This Earth is big

It comes at the end because Malay often uses a simple subject + description structure.

Also, in Malay noun phrases, adjectives usually come after the noun:

rumah besar = big house
kereta besar = big car

So post-noun description is very common in Malay.

A simple pronunciation guide is:

Boo-mee ee-nee bə-sar

More roughly:

• Bumi → BOO-mee
• ini → ee-NEE
• besar → bə-SAR

A few notes:

• u in Bumi is like oo in food
• i is usually like ee in see
• the e in besar is often a weak vowel, like the a in about
• r is usually tapped or lightly rolled, not the heavy English r

Not in the same way.

If you want to say this Earth, the normal Malay order is:

Bumi ini

not

ini Bumi

So the sentence should be:

Bumi ini besar

Putting ini before the noun is generally not the standard pattern for ordinary noun phrases.

Then the sentence becomes:

Bumi itu besar

That means:

That Earth is big or That world is big

Grammatically, it is the same structure. The only difference is:

• ini = this
• itu = that

So:

Bumi ini besar = This Earth is big
Bumi itu besar = That Earth is big

Yes. besar often means big or large, but like English big, it can sometimes be used more broadly depending on context.

For example, it can refer to:

• physical size
• age/status, as in someone being grown up
• importance or seriousness in some expressions

But in Bumi ini besar, the most straightforward meaning is physical size: big / large.