Mi vecina viene en patinete al trabajo cuando hace buen tiempo.

Because vecina is the feminine form of neighbor. It tells you the neighbor is a woman.

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

So Mi vecina means my female neighbor.

This is a very common question.

Spanish often distinguishes between venir and ir more clearly than English does:

• venir = to come
• ir = to go

In this sentence, viene al trabajo suggests movement toward the place that the speaker sees as the destination or reference point. If the speaker is at the workplace, venir makes sense: she comes to work.

If the speaker were thinking from the neighbor’s home or from a more neutral perspective, va al trabajo might also be possible in another context.

So the choice between venir and ir often depends on point of view.

En patinete means by scooter or on a scooter.

In Spain, patinete usually refers to a scooter, especially the kind you stand on. In modern usage, it can also often suggest an electric scooter, depending on context.

The structure is:

• en + means of transport

So:

• en coche = by car
• en tren = by train
• en patinete = by scooter

Because Spanish normally uses en to express how someone travels.

Examples:

• en coche
• en autobús
• en metro
• en bici
• en patinete

Using con would usually mean with a scooter, not necessarily riding it.
And a patinete is not the normal standard way to say it.

So en patinete is the natural transport expression.

Because al is the contraction of:

• a + el = al

So:

• al trabajo = to work / to the workplace

You use a because it marks direction or destination.

Examples:

• Voy al supermercado
• Viene al trabajo
• Llegan al centro

You cannot say a el trabajo in standard Spanish; it must contract to al.

Because hacer buen tiempo is a fixed weather expression in Spanish.

• hace buen tiempo = the weather is good / it’s nice out
• hace mal tiempo = the weather is bad

Spanish does not normally say hace el buen tiempo here.

This is just the standard idiomatic pattern:

• hacer + buen/mal tiempo

Because weather is often expressed differently in Spanish than in English.

Spanish commonly uses hacer for general weather conditions:

• Hace frío = It’s cold
• Hace calor = It’s hot
• Hace buen tiempo = The weather is nice
• Hace mal tiempo = The weather is bad

So even though English might use it is, Spanish often uses hace in these expressions.

Because here cuando describes a habitual situation: whenever the weather is nice, she comes to work by scooter.

That means the speaker is talking about something that regularly happens, so Spanish uses the indicative:

• cuando hace buen tiempo

The subjunctive after cuando is more common when talking about a future event that has not happened yet:

• Cuando haga buen tiempo, iremos a la playa. = When the weather is nice, we’ll go to the beach.

So:

• habitual/general → indicative
• future/not yet happened → subjunctive

Yes. Spanish uses the present tense for habitual actions, just like English often uses the simple present.

So Mi vecina viene... cuando hace buen tiempo means something like:

• she comes to work by scooter when the weather is good
• she usually comes to work by scooter in good weather

It is a general habit, not necessarily something happening right now.

Yes, in some contexts that would also be possible, but the meaning shifts slightly because of point of view.

• viene al trabajo = she comes to work
• va al trabajo = she goes to work

If the speaker is thinking from the perspective of the workplace, viene sounds natural.
If the speaker is thinking more generally about her daily commute, va may feel more neutral.

So both can be grammatical, but they are not always interchangeable.

Yes. Spanish word order is flexible here.

You could say:

• Mi vecina viene en patinete al trabajo cuando hace buen tiempo.
• Cuando hace buen tiempo, mi vecina viene en patinete al trabajo.

Both are correct. The second version gives a little more emphasis to the condition when the weather is nice.

Because mi means my and identifies the person from the speaker’s perspective.

• mi vecina = my neighbor
• su vecina = his/her/your/their neighbor

Spanish uses possessives the same way English does here. It does not imply ownership in a strange way; it is just the normal way to say my neighbor.

Not necessarily.

In Spain, patinete very commonly means a scooter, especially the kind used for short urban travel. In other Spanish-speaking places, another word may be more common, or patinete may suggest a slightly different kind of scooter or ride-on toy.

So for Spanish from Spain, en patinete is perfectly natural.