La cantidad parece suficiente.

Because cantidad is a feminine noun in Spanish, so it takes the feminine article la.

• la cantidad = the amount / the quantity
• not el cantidad

This is something you just have to learn with the noun. Even though the word does not end in -a because of a special rule here, it still happens to be feminine.

A useful habit is to learn nouns with their article:

• la cantidad
• la mesa
• el libro

That makes gender much easier to remember.

Cantidad usually means amount or quantity.

In this sentence, la cantidad means something like:

• the amount
• the quantity

Which English word is best depends on context:

• La cantidad de agua parece suficiente.
  = The amount of water seems sufficient.
• La cantidad de personas parece suficiente.
  = The number/quantity of people seems sufficient.

In everyday Spanish, cantidad can also sometimes mean a lot, depending on the sentence, but here it clearly means amount/quantity.

Parece is the third person singular form of the verb parecer, which means to seem or to appear.

The subject is la cantidad, which is singular, so the verb must also be singular:

• la cantidad parece = the amount seems

A quick breakdown:

• parecer = to seem
• parezco = I seem
• pareces = you seem
• parece = he/she/it seems

Since la cantidad is treated like it in English, parece is the correct form.

Because parece and es do not mean the same thing.

• La cantidad parece suficiente. = The amount seems sufficient.
• La cantidad es suficiente. = The amount is sufficient.

The version with parece is a little less definite. It suggests an impression or judgment, not an absolute statement.

So:

• parece suficiente = it looks/seems sufficient
• es suficiente = it is sufficient

In many real situations, this difference matters:

• Parece suficiente, pero vamos a comprobarlo.
  = It seems sufficient, but let’s check.

Because suficiente is an adjective that does not change for masculine and feminine in the singular.

So you get:

• el dinero suficiente / es suficiente
• la cantidad suficiente / es suficiente

The form stays suficiente for both masculine and feminine singular.

What does change is the plural:

• singular: suficiente
• plural: suficientes

Examples:

• La cantidad parece suficiente.
• El tiempo parece suficiente.
• Las cantidades parecen suficientes.
• Los recursos parecen suficientes.

Here, suficiente is not directly describing the noun inside the noun phrase. It is working as a predicate adjective after the verb parecer.

Structure:

• La cantidad = subject
• parece = verb
• suficiente = adjective describing the subject after the verb

This is similar to English:

• The amount seems sufficient.

You are not saying the sufficient amount; you are saying the amount seems sufficient.

Compare:

• la cantidad suficiente = the sufficient amount
• la cantidad parece suficiente = the amount seems sufficient

Both are possible, but they are different structures.

Yes. La cantidad parece ser suficiente is grammatically correct.

It means almost the same as:

• La cantidad parece suficiente

The version with ser is a bit more explicit and can sound:

• slightly more formal
• slightly heavier
• sometimes more natural in careful or written language

In everyday speech, people often prefer the shorter version:

• Parece suficiente.

So:

• parece suficiente = very natural, concise
• parece ser suficiente = also correct, a bit more formal or deliberate

Normally, no. In standard Spanish, you would usually say La cantidad parece suficiente.

The article la is needed because you are talking about the amount as a specific thing.

Without the article:

• Cantidad parece suficiente

this sounds incomplete or unnatural in normal conversation.

Spanish often uses articles where English may sometimes leave them out. So for a full sentence like this, keep la.

It would become:

• Las cantidades parecen suficientes.

Here is what changes:

• la → las
• cantidad → cantidades
• parece → parecen
• suficiente → suficientes

Everything that needs to agree in number changes accordingly.

Singular:

• La cantidad parece suficiente.

Plural:

• Las cantidades parecen suficientes.

A simple pronunciation guide is:

la kan-tee-DAD pa-RE-theh soo-fee-thyen-teh

In standard Peninsular Spanish:

• c before e/i often sounds like th in think
• so parece sounds roughly like pa-RE-the
• and suficiente sounds roughly like soo-fee-THYEN-te

Stress:

• cantiDAD
• paREce
• sufiCIENte

If you pronounce it with a Latin American s sound instead of the Spain th sound, people will still understand you:

• pa-RE-se
• soo-fee-SYEN-te

Not always. It depends on what you are talking about.

Cantidad is common and correct, but Spanish also uses other words depending on context:

• cantidad = amount / quantity
• número = number
• volumen = volume
• nivel = level

For example:

• La cantidad de azúcar parece suficiente.
  = good, because sugar is measured as an amount.
• El número de invitados parece suficiente.
  = often better than cantidad if you mean number of guests.

So cantidad is a broad, useful word, but not always the most precise one.