La vecina me echó una mano.

La vecina means the female neighbor or the woman next door / nearby.

• vecino = male neighbor
• vecina = female neighbor

So this sentence tells you the neighbor is a woman. If it were a man, you would say El vecino me echó una mano.

La is the feminine singular definite article, meaning the.

It matches vecina, which is feminine singular:

• la vecina = the female neighbor
• el vecino = the male neighbor

Spanish usually uses articles more often than English, so la vecina sounds completely normal.

Me means to me.

In this sentence, it shows who received the help:

• La vecina me echó una mano = The neighbor gave me a hand / helped me

This is an indirect object pronoun. Other possible pronouns are:

• te = to you
• le = to him/her/you formal
• nos = to us
• os = to you all
• les = to them/you all formal

For example:

• La vecina te echó una mano = The neighbor helped you
• La vecina nos echó una mano = The neighbor helped us

Literally, echar can mean things like to throw, to toss, or to cast, but here echar una mano is an idiom.

The whole expression echar una mano means:

• to give someone a hand
• to help
• to lend a hand

So you should understand it as one unit, not word by word.

It is just a set expression, much like English uses give someone a hand. In both languages, the idea is metaphorical: a hand represents assistance.

So:

• Me echó una mano = She helped me
• ¿Me echas una mano? = Can you give me a hand?

It is a very common and natural expression.

Because echar una mano is a fixed idiomatic expression. Spanish normally uses one hand in this phrase, just as English says give me a hand, not usually give me two hands.

So even though a person has two hands, the idiom stays in the singular:

• echar una mano = to help

Echó is the preterite tense, third person singular, from echar.

That means it refers to a completed action in the past:

• echar = to throw / to lend, in this idiom
• echó = he/she/it threw / gave / helped

So La vecina me echó una mano means the neighbor helped me at a specific moment or in a completed situation.

The accent mark is important because it distinguishes echó from echo.

• echó = he/she gave/threw/helped (preterite)
• echo = I throw / I give (present tense of echar)

The accent also shows the stress falls on the last syllable: e-CHÓ.

So:

• La vecina me echó una mano = The neighbor helped me
• Yo echo una mano = I help / I give a hand

Yes. La vecina me ayudó is perfectly correct and means almost the same thing: The neighbor helped me.

The difference is mainly in style:

• me ayudó = more direct, neutral
• me echó una mano = more idiomatic, conversational, and a bit warmer

Both are common. The version with echar una mano often sounds more natural in everyday speech.

Yes, echar una mano is very common in Spain and also widely understood across the Spanish-speaking world.

It is normal, everyday Spanish. It is not especially formal, but it is not rude or slangy either. You can use it in many situations:

• Mi hermano me echó una mano con la mudanza = My brother helped me with the move
• ¿Me echas una mano? = Can you help me?

In Spanish, object pronouns like me, te, lo, la, le, nos usually go before a conjugated verb.

So:

• La vecina me echó una mano ✅
• La vecina echó me una mano ❌

With a normal finite verb, the pronoun comes before it.

Yes, but the most neutral order is:

• La vecina me echó una mano

You can also hear:

• Me echó una mano la vecina

This version may put more focus on the action first, or it may sound more conversational depending on context. But the original order is the most straightforward for learners.

Not necessarily. Vecina can refer to a woman who lives nearby, in the same building, street, or local area. It does not always have to mean the person literally in the apartment or house right beside yours.

So in English, depending on context, it could be:

• the neighbor
• the woman next door
• a neighbor from my building/street

Yes. You can keep echar una mano and change the subject and pronoun as needed:

• Mi amigo me echó una mano = My friend helped me
• Tus padres nos echaron una mano = Your parents helped us
• ¿Me echas una mano? = Can you help me?
• Os echo una mano = I’ll help you all

It is a very useful pattern to learn.