Đây là lối vào.

A natural word-by-word breakdown is:

• Đây = this / here
• là = to be / is
• lối vào = entrance / way in

So the structure is basically:

Đây + là + lối vào
= This is the entrance / Here is the entrance

In Vietnamese, lối vào is a noun phrase meaning the place or path used to go in.

Because Vietnamese often uses đây to point something out that is near the speaker, like this or here in English.

So Đây là lối vào is like saying:

• This is the entrance
• Here is the entrance

It is a very common pattern:

• Đây là nhà tôi. = This is my house.
• Đây là bạn tôi. = This is my friend.

So đây is functioning as the thing being identified.

Là links one thing to another, similar to is / am / are in English in sentences of identification.

In Đây là lối vào, là connects:

• Đây → the thing being pointed out
• lối vào → what it is

So it works like is in This is the entrance.

A useful idea:

• When Vietnamese says that one thing is another thing, là is often used.
• But Vietnamese does not use là in every sentence where English uses to be.

For example:

• Tôi là sinh viên. = I am a student.
• But: Tôi mệt. = I am tired.
  Here there is no là.

Vietnamese does not use articles the way English does. There is no direct equivalent that must appear before a noun in sentences like this.

So lối vào can mean:

• an entrance
• the entrance

The exact meaning depends on context.

In Đây là lối vào, English usually translates it as This is the entrance because the context makes it specific.

Not exactly.

Lối vào means entrance, way in, or access route in. It can refer to:

• a doorway
• a passage
• a path
• a general entry area

Cửa vào is more specifically entrance door or doorway.

So:

• lối vào = the entrance in a broader sense
• cửa vào = the actual door or entry door

If you are talking about a sign in a building, lối vào is very natural.

Related expressions:

• lối ra = exit / way out
• cửa ra = exit door

Yes. In many real-life situations, especially on signs, Lối vào by itself is completely natural.

For example:

• On a sign: Lối vào
• In conversation while pointing: Đây là lối vào.

The full sentence Đây là lối vào sounds like someone is identifying or showing the entrance to another person.

So:

• Lối vào = entrance sign / label
• Đây là lối vào = This is the entrance

A rough pronunciation guide for English speakers is:

• Đây ≈ day
• là ≈ lah
• lối ≈ something like loy
• vào ≈ something like vow, but smoother and in two parts

Tones are important:

• đây has a level-ish tone
• là has a low falling tone
• lối has a rising-broken tone in the North
• vào has a falling tone on vào

A few pronunciation notes:

• đ is not the same as d in Vietnamese.
  đ is pronounced like English d.
• lối contains ôi, which sounds somewhat like the vowel in boy, but not exactly.
• vào is one syllable vào, not separated into two words.

If you are learning a specific accent, pronunciation will vary a little:

• Northern Vietnamese
• Southern Vietnamese

But the sentence is standard and understood everywhere.

It is very similar here.

English: This is the entrance.

Vietnamese: Đây là lối vào.

So the pattern is:

• Đây = this / here
• là = is
• lối vào = the entrance

In this sentence, Vietnamese and English line up quite neatly, which makes it easier for beginners.

Yes. Đây can often feel like either this or here, depending on context.

So this sentence may be understood as:

• This is the entrance
• Here is the entrance

If someone is physically showing you where to go, Here is the entrance is a very natural English translation.

If someone is identifying a place on a map or diagram, This is the entrance may feel better.

To make it negative, you can use không phải:

• Đây không phải là lối vào. = This is not the entrance.

In everyday speech, people may also say:

• Đây không phải lối vào.

To make it a yes-no question:

• Đây là lối vào à? = Is this the entrance?
• Đây có phải là lối vào không? = Is this the entrance?

The second version is especially common and clear for learners.

Yes, it is completely natural.

It works well when:

• pointing out a location
• explaining where someone should go
• identifying an entrance in person

Examples of natural use:

• At a building: Đây là lối vào.
• Showing a guest where to enter: Đây là lối vào.
• Explaining a layout: Đây là lối vào, còn kia là lối ra.
  = This is the entrance, and that is the exit.

So it is a simple, correct, and useful sentence for beginners.