थाली में आठ आलू हैं।

A word-by-word breakdown is:

• थाली = plate / dish / tray, especially a metal plate used for serving food
• में = in / on / inside (depending on context)
• आठ = eight
• आलू = potato / potatoes
• हैं = are

So the structure is roughly:

• थाली में = in/on the plate
• आठ आलू = eight potatoes
• हैं = are

Hindi uses postpositions, not prepositions.

• In English, you say in the plate
• In Hindi, you say थाली में
  • थाली = plate
  • में = in

So में comes after the noun it relates to. This is normal in Hindi.

Other examples:

• घर में = in the house
• किताब पर = on the book
• मेज़ के नीचे = under the table

हैं is used because the subject is plural: आठ आलू = eight potatoes.

Compare:

• एक आलू है। = There is one potato.
• आठ आलू हैं। = There are eight potatoes.

So:

• है = is
• हैं = are

In this sentence, the thing being talked about is आलू, and since there are eight of them, Hindi uses the plural verb हैं.

That is a very common learner question. In Hindi, not all nouns change visibly in the plural in every context.

आलू is one of those nouns whose direct singular and direct plural forms are the same:

• एक आलू = one potato
• आठ आलू = eight potatoes

So the plural is understood from:

• the number (आठ), and
• the verb (हैं)

This is perfectly normal in Hindi.

Hindi often expresses existence without a separate word for there.

English says:

• There are eight potatoes on the plate.

Hindi simply says:

• थाली में आठ आलू हैं।

Literally, this is closer to:

• In the plate, eight potatoes are.

This is a very common Hindi pattern for saying that something exists somewhere:

• कमरे में एक कुर्सी है। = There is a chair in the room.
• बैग में किताबें हैं। = There are books in the bag.

So Hindi does not need a dummy subject like English there.

Hindi usually follows Subject–Object–Verb order, and location phrases often come before the main noun phrase.

English:

• There are eight potatoes on the plate.

Hindi:

• थाली में आठ आलू हैं।
• literally: On the plate eight potatoes are.

A useful pattern is:

[place] + [thing] + [verb]

Examples:

• कमरे में एक मेज़ है। = There is a table in the room.
• डिब्बे में दो आम हैं। = There are two mangoes in the box.

So the sentence structure is normal Hindi, even though it feels reversed from English.

Yes, this is a good observation. Hindi often uses में in places where English might prefer on, especially with containers, dishes, and spaces seen as holding something.

So थाली में can naturally correspond to:

• in the plate
• on the plate

In natural English, on the plate is usually better. But Hindi still commonly uses में here.

So do not translate too mechanically. Think of the overall meaning, not just one-for-one word replacement.

Hindi does not have articles like English a, an, and the.

So:

• थाली can mean a plate or the plate
• आलू can mean a potato, the potato, or potatoes, depending on context

You understand the exact meaning from context, not from an article.

That means थाली में आठ आलू हैं। could be translated as:

• There are eight potatoes on the plate
• There are eight potatoes in a plate

Usually the context tells you which one sounds best.

Yes, थाली is a very common Hindi noun. It usually means a plate, dish, or large serving plate, often a metal one used in Indian meals.

It is a feminine noun.

You may also see थाली used culturally to mean a full meal served with several items on one plate.

So in this sentence, it simply refers to a plate or dish containing the potatoes.

A simple learner-friendly pronunciation guide is:

• थाली ≈ thaa-lee
• में ≈ mein / mayn (nasalized)
• आठ ≈ aath
• आलू ≈ aa-loo
• हैं ≈ hain / heyn (nasalized)

A rough full pronunciation: thaa-lee mein aath aa-loo hain

A few important notes:

• थ is an aspirated t sound, not the English th in think
• में and हैं have nasalization
• आ is a long aa sound

Yes. थाली में आठ आलू हैं। is already natural, but depending on context, you might also hear similar sentences such as:

• प्लेट में आठ आलू हैं। = There are eight potatoes on the plate.

  • using प्लेट, a common borrowed word from English

• थाली में आठ आलू पड़े हैं।

  • this can suggest the potatoes are lying there physically

But for a basic statement of location/existence, थाली में आठ आलू हैं। is simple and standard.

You would change the number and the verb:

• थाली में एक आलू है। = There is one potato on the plate.

Notice:

• आठ becomes एक
• हैं becomes है

But आलू itself stays the same in this direct form:

• एक आलू
• आठ आलू

That is a useful pattern to remember.