Perechea de pantofi ieftini este lângă ușă.

Because -a is the attached definite article.

• pereche = a pair
• perechea = the pair

Romanian usually puts the definite article at the end of the noun instead of using a separate word like English the.

Because Romanian uses de after nouns like pair, glass, piece, group, and so on.

So:

• o pereche de pantofi = a pair of shoes
• perechea de pantofi = the pair of shoes

This is a very common pattern:

• un pahar de apă = a glass of water
• o bucată de pâine = a piece of bread

Because the grammatical subject is perechea, which is singular.

Even though pantofi is plural, the sentence is built around the pair, not the shoes.

So:

• Perechea ... este = The pair ... is
• Pantofii ... sunt = The shoes ... are

This works much like English.

Because ieftini describes pantofi, not perechea.

• pantofi is masculine plural
• so the adjective is also masculine plural: ieftini

So perechea de pantofi ieftini means the pair of cheap shoes.

This is an important contrast:

• perechea de pantofi ieftini = the pair of cheap shoes
• perechea ieftină de pantofi = the cheap pair of shoes

In the first one, cheap describes the shoes. In the second, cheap describes the pair.

Yes, but the meaning shifts slightly.

• perechea de pantofi ieftini focuses on shoes that are cheap
• perechea ieftină de pantofi focuses on the pair as a cheap item

Romanian often uses both word order and agreement to show what an adjective belongs to.

So this is not just style; it can change what the adjective is modifying.

Both can be possible, but they do not feel exactly the same.

• lângă ușă is a very natural location expression, often used when the main point is simply the place
• lângă ușa sounds more explicitly definite: next to the door

Romanian often allows a bare noun after a preposition in everyday location phrases, especially when the setting is clear from context.

So lângă ușă is completely normal, even if English might prefer the door.

Yes. Both mean is.

• este = full form
• e = shorter everyday form

So you could also hear:

• Perechea de pantofi ieftini e lângă ușă.

That sounds natural and common in speech.

A rough English-style guide is:

pe-REH-kea de pan-TOF yef-TEE-nee YES-te LUN-guh OO-shuh

A few helpful spelling notes:

• ch before e sounds like k, so perechea does not have the ch sound of church
• ș sounds like sh
• ă sounds like a short unstressed uh
• â has no exact English equivalent; it is a central vowel, and in lângă it is often approximated as something like uh or i said deep in the mouth

Romanian spelling is fairly phonetic, so once you learn the letter sounds, pronunciation becomes much easier.

Yes, Romanian word order is more flexible than English, although the original sentence is the most neutral order.

Neutral:

• Perechea de pantofi ieftini este lângă ușă.

If you change the order, you usually change the emphasis:

• Lângă ușă este perechea de pantofi ieftini. = emphasis on the location

So the given version is the best basic pattern for learners: subject + verb + place

It is in the accusative, because lângă takes the accusative.

However, for many Romanian nouns, the nominative and accusative forms look the same, so there is no visible change here.

That is why you simply see:

• lângă ușă

rather than a special new form of the noun.