Lửa trại ở ngoài lều.

• lửa = fire
• trại = camp
• lửa trại = campfire
• ở = at / in / located at
• ngoài = outside
• lều = tent

So word by word, it is roughly campfire at outside tent, which natural English expresses as The campfire is outside the tent or A campfire is outside the tent.

Vietnamese often does not need a verb like to be in simple location sentences.

So:

• Lửa trại ở ngoài lều = The campfire is outside the tent

Here, ở handles the idea of location, so you do not add another word meaning is.

This is very common in Vietnamese:

• Tôi ở nhà = I am at home
• Sách ở trên bàn = The book is on the table

In this sentence, ở marks location. It often means at, in, or located at, depending on context.

So:

• ở ngoài lều = outside the tent

You can think of ở as introducing the place where something is.

A useful pattern is:

[thing] + ở + [location]

Examples:

• Con mèo ở trong nhà = The cat is in the house
• Xe ở ngoài đường = The vehicle is outside on the road

Yes, ngoài means outside, but ở is what makes the whole phrase clearly function as a location phrase.

• ngoài lều = outside the tent
• ở ngoài lều = located outside the tent

In many cases, Vietnamese speakers may omit ở in casual speech if the meaning is still clear, but ở ngoài lều is a very standard and clear way to say it.

So:

• Lửa trại ở ngoài lều = fully explicit
• Lửa trại ngoài lều = possible in some contexts, but less neutral as a basic learner model

Yes, literally the parts are fire + camp, but together lửa trại is a fixed expression meaning campfire.

This is common in Vietnamese: two words combine into a natural compound that should be learned as one unit.

So it is better to remember:

• lửa trại = campfire

rather than trying to translate each part separately every time.

Lều most commonly means tent or a simple temporary shelter.

Depending on context, it can sometimes refer to a hut-like structure, but for most learners and in a sentence like this, tent is the best meaning.

So in:

• ở ngoài lều

the most natural understanding is:

• outside the tent

Vietnamese often uses this basic order:

thing + location

So:

• Lửa trại = the campfire
• ở ngoài lều = outside the tent

Put together:

• Lửa trại ở ngoài lều

English uses:

• The campfire is outside the tent

So Vietnamese does not need an extra is, but the overall idea is similar:

1. name the thing
2. say where it is

Vietnamese usually does not mark the and a/an as directly as English does.

So Lửa trại ở ngoài lều could mean:

• The campfire is outside the tent
• A campfire is outside the tent

The correct English choice depends on context.

Vietnamese often leaves definiteness unstated unless it needs to be made clearer.

Not necessarily. In Vietnamese, classifiers are common, but they are not required in every situation.

You might hear:

• ngoài lều = outside the tent
• ngoài cái lều = outside the tent

Adding cái can make the noun feel more concrete or more explicitly countable, but without it, the sentence is still perfectly natural.

For learners, it is important to know:

• classifiers are common
• but bare nouns are also very common, especially in simple location phrases

A careful pronunciation would be roughly:

• lửa → sounds a bit like loo-uh with a dipping-rising tone
• trại → roughly chai or trye with a heavy falling/glottal tone
• ở → like uh with a creaky rising tone
• ngoài → roughly ngwye or ngwai with a falling tone
• lều → roughly lee-oo with a rising tone

A very rough English-friendly guide:

• Lửa trại ở ngoài lều
• loo-uh chai uh ngwai lee-oo

But Vietnamese pronunciation varies by dialect, and tones matter a lot, so a recording is much better than English spelling.

You can do a rough word-for-word gloss:

• Lửa trại = campfire
• ở ngoài lều = at outside the tent

But that is not natural English. The natural translation is:

• The campfire is outside the tent.

So word-for-word translation is useful for understanding structure, but not for producing natural English.