Sângele este roșu.

Because -le is the definite article attached to the noun.

• sânge = blood / some blood
• sângele = the blood

Romanian usually puts the definite article at the end of the noun, unlike English, which uses a separate word (the).

So:

• Sângele este roșu. = The blood is red.

The dictionary form is sânge, meaning blood.

Sângele is the definite form:

• sânge = blood
• sângele = the blood

If you look this word up in a dictionary, you would normally search for sânge.

Yes. Este means is, from the verb a fi (to be).

So the sentence structure is very straightforward:

• Sângele = the blood
• este = is
• roșu = red

Romanian often uses este in full, especially in clear, neutral sentences like this.

No, not in standard Romanian for this kind of sentence. You normally need the verb a fi.

So:

• Sângele este roșu. = correct
• Sângele roșu. = not a normal complete sentence in standard Romanian

Romanian does not usually drop the verb to be in present-tense statements.

Because roșu agrees with sângele, which is singular masculine in grammar.

Romanian adjectives change form to match the noun in gender and number.

Here are some common forms of red:

• masculine singular: roșu
• feminine singular: roșie
• masculine plural: roșii
• feminine plural: roșii

Since sânge is treated as a masculine singular noun, the adjective is roșu.

Because grammatical gender in Romanian does not always match biological sex or logical gender. Many inanimate nouns are simply assigned a grammatical gender.

So sânge is grammatically masculine, even though blood obviously has no natural sex.

This is something learners usually just memorize along with the noun:

• un sânge
• sângele

The word order is basically the same as in English:

• Subject: Sângele
• Verb: este
• Adjective / predicate complement: roșu

So it is a normal Subject + Verb + Complement sentence:

• The blood is red.

You technically can change the word order for emphasis or stylistic effect, but it would sound marked or poetic, not neutral.

The normal everyday sentence is:

• Sângele este roșu.

If you put roșu first, it may sound dramatic, literary, or contrastive.

A rough pronunciation is:

• sângele ≈ SUHN-jeh-leh

A few important details:

• â is a Romanian vowel that does not exist exactly in English. It is a central vowel, somewhat like a muted sound deep in the mouth.
• g before e is pronounced like the j in judge. So ge sounds like je.

So:

• sân-ge-le → the middle part sounds like je

A rough pronunciation is:

• roșu ≈ ROH-shoo

Notes:

• ș is pronounced sh
• u here sounds like oo in food

So roșu sounds close to ROH-shoo.

Romanian uses several special letters, and two appear here:

• â in sângele
• ș in roșu

They are not optional in correct Romanian spelling.

Their values are:

• â = a central vowel specific to Romanian
• ș = sh

Without diacritics, you might see:

• sangele este rosu

People may write that informally when they do not have Romanian keyboard support, but the correct spelling is:

• Sângele este roșu.

Because Romanian usually expresses the by adding it to the end of the noun.

Compare:

• English: the blood
• Romanian: sânge + le = sângele

This is one of the most important differences between English and Romanian grammar.

It can sound like a general statement, even though it uses the definite form.

Romanian often uses the definite article in general truths more naturally than English sometimes does.

So Sângele este roșu can be understood as:

• Blood is red or
• The blood is red

The exact interpretation depends on context, but as an isolated sentence it is perfectly natural as a general statement.

Yes. E is the short, very common spoken form of este.

So both are correct:

• Sângele este roșu.
• Sângele e roșu.

The version with este is slightly more formal or careful; e is very common in everyday speech.

You put nu before the verb:

• Sângele nu este roșu. = The blood is not red.

In everyday speech, you could also say:

• Sângele nu e roșu.

In Romanian, yes-no questions are often formed mainly by intonation, without changing the word order.

So:

• Sângele este roșu? = Is the blood red?

In speech, your voice rises at the end. The word order can stay the same.

In this sentence, roșu is an adjective meaning red.

But in other contexts, color words in Romanian can sometimes function like nouns too, depending on the sentence. Here, though, it is simply describing sângele, so it is clearly adjectival:

• sângele = the blood
• roșu = red

If you changed the noun to a plural masculine noun, the adjective would also change.

For example:

• Trandafirii sunt roșii. = The roses are red.

But blood is normally an uncountable noun, so sângele is the natural form here. You would not usually make this sentence plural in ordinary usage.

Yes. It is simple, grammatical, and natural.

It is a standard Romanian sentence with:

• a definite noun
• the verb to be
• an agreeing adjective

So it is a very good beginner example of basic Romanian sentence structure.