Tỉnh ở gần biển.

Here, tỉnh means province.

Vietnamese tỉnh can also mean awake / conscious / sober, so learners often notice the ambiguity. In this sentence, though, ở gần biển is describing a location, so tỉnh is naturally understood as the noun province.

Not necessarily. It is capitalized here simply because it is the first word of the sentence.

If you were naming a specific province, you might see something like tỉnh Quảng Ninh or Tỉnh Quảng Ninh depending on formatting. But tỉnh by itself is just a common noun meaning province.

Vietnamese does not always use a separate word equivalent to English is.

In this sentence, ở is doing the main job: it means something like to be at / to be located at. So Tỉnh ở gần biển literally works like:

• Tỉnh = province
• ở = is located / is at
• gần biển = near the sea

So the sentence already has what English would express with is.

Here, ở means to be located at.

It is a very common Vietnamese word used for location. Depending on context, ở can mean things like:

• be at
• stay at
• live at
• located at

In Tỉnh ở gần biển, it means the province is located near the sea.

Because gần biển is the location phrase.

The structure is:

Subject + ở + location phrase

So:

• Tỉnh = subject
• ở = locative verb
• gần biển = location phrase, meaning near the sea

Vietnamese word order is often more direct than English once you get used to it.

Biển means sea (or sometimes the ocean/sea area, depending on context).

If you want to say beach, the usual word is bãi biển.

So:

• biển = sea
• bãi biển = beach

That is a very common point of confusion for English speakers.

Vietnamese does not use articles the way English does.

So a bare noun like tỉnh can mean:

• the province
• a province
• provinces in a generic sense

The exact meaning depends on context. English forces you to choose the or a, but Vietnamese often leaves that unstated.

Because Vietnamese nouns do not always need a classifier.

You often use a classifier when counting or introducing something explicitly, for example:

• một tỉnh = one province / a province

But in a simple statement, a bare noun is often fine:

• Tỉnh ở gần biển.

So this is normal Vietnamese sentence structure.

Yes, often you can.

Tỉnh gần biển is understandable and can sound natural in the right context. Adding ở makes the location relationship more explicit: is located near.

So roughly:

• Tỉnh gần biển = The province is near the sea.
• Tỉnh ở gần biển = The province is located near the sea.

Both are possible, but ở helps clearly mark location.

A good way to remember it is:

Noun + ở + place/location description

Examples:

• Nhà ở gần trường. = The house is near the school.
• Công ty ở trung tâm thành phố. = The company is in the city center.
• Tỉnh ở gần biển. = The province is near the sea.

This is a very useful everyday pattern in Vietnamese.

The tones are:

• tỉnh — hỏi tone
• ở — hỏi tone
• gần — huyền tone
• biển — hỏi tone

So three of the four words here have the hỏi tone, which can make the sentence a bit tricky for beginners.

A rough pronunciation guide is:

• tỉnh ≈ ting with a dipping tone
• ở ≈ a short uh/er sound with a dipping tone
• gần ≈ guhn with a low falling tone
• biển ≈ something like bee-uhn said as one syllable, with a dipping tone

The exact sounds are best learned by listening, but noticing the tones early is very helpful.