Hay que dejar de acumular tareas pendientes.

Hay que is an impersonal expression that means something like it is necessary to, one must, or we need to, depending on context.

In Hay que dejar de acumular tareas pendientes, it does not point to a specific person. It gives a general idea:

• Hay que... = It’s necessary to...
• We need to...
• People should...

So it sounds broader and less direct than tenemos que, which clearly means we have to.

Because hay que is used when the speaker wants to make a general statement rather than say exactly who must do it.

Compare:

• Hay que dejar de acumular tareas pendientes.
  = We/people/one need(s) to stop accumulating pending tasks.

• Tenemos que dejar de acumular tareas pendientes.
  = We have to stop accumulating pending tasks.

• Tienen que dejar de acumular tareas pendientes.
  = They/you all have to stop accumulating pending tasks.

So hay que is more impersonal and often sounds like advice, a general rule, or a shared necessity.

Because in hay que + infinitive, hay does not agree with the noun that comes later.

Here, hay que works as a fixed impersonal structure:

• Hay que estudiar.
• Hay que descansar.
• Hay que dejar de acumular tareas pendientes.

The plural noun tareas pendientes belongs to acumular, not to hay.

So the sentence is structured like this:

• Hay que = it is necessary to
• dejar de acumular = stop accumulating
• tareas pendientes = pending tasks

Dejar de + infinitive means to stop doing something or to cease doing something.

Examples:

• dejar de fumar = to stop smoking
• dejar de hablar = to stop talking
• dejar de acumular tareas pendientes = to stop accumulating pending tasks

This is a very common structure in Spanish.

Because after dejar de, Spanish normally uses an infinitive.

So the pattern is:

• dejar de + infinitive

Examples:

• dejar de comer
• dejar de preocuparse
• dejar de acumular

This is similar to English to stop + -ing, but Spanish uses the infinitive instead.

Yes. Acumular means to accumulate, to pile up, or to build up.

In this context, it suggests that unfinished tasks are mounting up over time.

Depending on style, you could translate it in different natural ways:

• to accumulate
• to pile up
• to let ... build up

So the sentence has the idea of not letting more and more unfinished tasks collect.

Tareas pendientes means pending tasks, outstanding tasks, or unfinished tasks.

• tareas = tasks
• pendientes = pending / still to be done

In everyday Spanish, pendiente often means something is still awaiting attention.

For example:

• Tengo muchas tareas pendientes.
  = I have many pending tasks / lots of things left to do.

Because pendientes must agree with tareas, which is:

• feminine plural

So the adjective also becomes:

• pendientes = plural

Agreement here is:

• tarea pendiente = one pending task
• tareas pendientes = pending tasks

This is standard adjective agreement in Spanish.

Because Spanish often omits the article when speaking about things in a general, non-specific way.

Here, acumular tareas pendientes means to accumulate pending tasks in general, not a specific set of tasks.

Compare:

• acumular tareas pendientes
  = pending tasks in general

• acumular las tareas pendientes
  = accumulate the pending tasks, meaning a specific known set

In this sentence, the general meaning fits better without the article.

Yes, but it would slightly change the feel.

• Hay que dejar de acumular tareas pendientes.
  = general idea: stop building up pending tasks

• Hay que dejar de acumular las tareas pendientes.
  This sounds less natural, because accumulating the pending tasks is a bit odd if those tasks are already the known pending ones.

More natural alternatives with las tareas pendientes would be:

• Hay que dejar de posponer las tareas pendientes.
• Hay que hacer las tareas pendientes.

So in the original sentence, tareas pendientes without the article is the most natural choice.

Because in Spanish, adjectives often come after the noun, especially when they describe a category or objective characteristic.

So:

• tareas pendientes = pending tasks

This is more natural than placing the adjective first.

In general:

• libro interesante = interesting book
• problemas económicos = economic problems
• tareas pendientes = pending tasks

Some adjectives can go before the noun, but here pendientes normally goes after it.

Yes, it sounds natural in Spain.

A speaker from Spain might also say similar things like:

• Hay que dejar de dejarlo todo para luego.
• Hay que ponerse al día con las tareas pendientes.
• No podemos seguir acumulando tareas pendientes.

The original sentence sounds clear, idiomatic, and natural, especially in work, study, or productivity contexts.