Tỉnh này lớn.

Vietnamese often does not use a copula like is / am / are when linking a subject to an adjective.

So:

• Tỉnh này lớn = This province is big
• literally, it is closer to Province this big

This is completely normal in Vietnamese. When the predicate is an adjective such as lớn (big), you usually do not add a word for is.

In Vietnamese, demonstratives like này (this) usually come after the noun.

So:

• tỉnh này = this province
• not this province in English order

This noun + demonstrative pattern is very common:

• nhà này = this house
• người này = this person
• xe này = this vehicle / this car

So tỉnh này lớn follows a very normal Vietnamese pattern.

The structure is:

• Tỉnh này = subject noun phrase
• lớn = predicate adjective

So the pattern is:

• [noun + này] + adjective

In other words:

• Tỉnh này lớn = This province is big

A lot of simple Vietnamese sentences work like this:

• Nhà này đẹp = This house is beautiful
• Con chó này nhỏ = This dog is small

It can mean either big or large depending on context. In many everyday cases, big is the most natural English translation.

For Tỉnh này lớn, possible translations include:

• This province is big
• This province is large

Both are fine. Vietnamese lớn is a common adjective for size.

It can also be used in some other senses, such as grown-up / older in certain contexts, but here it clearly means physical or geographic size.

Yes. That means This province is very big.

• lớn = big
• rất lớn = very big

This is extremely common. rất goes before the adjective:

• Tỉnh này rất lớn
• Nhà này rất đẹp
• Con đường này rất dài

So if you want stronger emphasis, adding rất is natural.

Normally, no. Vietnamese does not usually place adjectives before nouns the way English does.

English:

• a big province

Vietnamese:

• một tỉnh lớn

So the adjective usually comes after the noun.

In your sentence, lớn is not directly modifying the noun inside a noun phrase; it is functioning as the predicate of the whole sentence:

• Tỉnh này lớn = This province is big

But even in noun phrases, Vietnamese generally keeps the adjective after the noun.

They are similar, but lớn is usually the safer and more standard choice here.

Both lớn and to can relate to size, and in some contexts both can mean big. But:

• lớn is very common and broad in use
• to often feels more physical or colloquial, depending on context

For a place like a province, lớn sounds very natural. A learner should be more confident using:

• Tỉnh này lớn

The important part is the tones:

• tỉnh has the hỏi tone
• này has the huyền tone
• lớn has the sắc tone

A rough guide for an English speaker:

• tỉnh: starts somewhat like ting, but with a Vietnamese vowel and the hỏi dipping tone
• này: somewhat like nye with a falling tone
• lớn: a short vowel sound with a rising tone

If your tones are wrong, people may still sometimes guess your meaning from context, but tones are very important in Vietnamese, so they are worth practicing carefully.

Usually, that would not mean the same thing.

• Tỉnh này lớn = This province is big
• Tỉnh lớn by itself is more like a big province or big province, not a complete natural equivalent in most contexts

If you want a full sentence about a specific province, này helps identify it as this province.

So if the English meaning is This province is big, you should keep này.

No. Tỉnh does not need a classifier in this sentence.

Vietnamese classifiers are common, but they are not used in every sentence. In a simple statement like this, you can just say:

• Tỉnh này lớn

A classifier would usually appear in other types of structures, especially with numbers or certain noun phrases. For example, classifiers are much more likely when you say things like one, two, or when specifying a particular item in some contexts.

But here, no classifier is needed.

Not exactly in form, though the overall idea is close.

Tỉnh này lớn specifically means:

• This province is big

If you want This is a big province, Vietnamese would normally be structured differently, for example with a pronoun like đây:

• Đây là một tỉnh lớn = This is a big province

So the sentence you have is centered on the province as the subject, not on this as a standalone pronoun.

Yes, it is fully natural and complete.

It has:

• a subject: Tỉnh này
• a predicate: lớn

Vietnamese often allows very short, clean sentences like this. You do not need to add anything else unless you want more detail, such as:

• Tỉnh này rất lớn = This province is very big
• Tỉnh này lớn lắm = This province is very big / This province is really big
• Tỉnh này khá lớn = This province is quite big

So the original sentence is already perfectly normal.