Eu guardo o ralador na gaveta da cozinha.

Yes. In Portuguese, the subject pronoun is often omitted because the verb ending already shows who the subject is.

• Eu guardo o ralador na gaveta da cozinha.
• Guardo o ralador na gaveta da cozinha.

Both mean the same thing: I keep/store the grater in the kitchen drawer.

Including eu can add emphasis, contrast, or clarity:

• Eu guardo o ralador na gaveta, mas ele põe-no no armário.
  • I keep the grater in the drawer, but he puts it in the cupboard.

Guardo is the 1st person singular form of the verb guardar.

Here it means something like:

• I keep
• I store
• I put away

Depending on context, guardar can also mean:

• to save
• to keep
• to look after
• to guard

In this sentence, the idea is that you normally keep the grater in that place, not just that you are putting it there right now.

Because guardar is the infinitive, meaning to keep / to store.

The sentence needs a conjugated verb:

• guardar = to keep
• guardo = I keep

Present tense of guardar:

• eu guardo = I keep
• tu guardas = you keep
• ele/ela guarda = he/she keeps
• nós guardamos = we keep
• vós guardais = you all keep
• eles/elas guardam = they keep

Because ralador is a masculine singular noun, so it takes the masculine singular definite article o.

• o ralador = the grater

In Portuguese, nouns have grammatical gender, and the article must match:

• o = masculine singular
• a = feminine singular
• os = masculine plural
• as = feminine plural

So:

• o ralador
• not a ralador

In everyday Portuguese, ralador usually means a grater, the kitchen tool used to grate cheese, carrots, etc.

It comes from the verb ralar, which means to grate.

Examples:

• um ralador de queijo = a cheese grater
• ralar cenoura = to grate carrot

So in a kitchen sentence like this, ralador is naturally understood as grater.

Because na is a contraction of:

• em
  • a = na

And gaveta is feminine singular, so with the definite article:

• a gaveta = the drawer

Therefore:

• na gaveta = in the drawer

This is extremely common in Portuguese:

• no = em + o
• na = em + a
• nos = em + os
• nas = em + as

So:

• Eu guardo o ralador na gaveta. = I keep the grater in the drawer.

Da is a contraction of:

• de
  • a = da

So:

• a cozinha = the kitchen
• da cozinha = of the kitchen

In the sentence, a gaveta da cozinha means:

• the kitchen drawer
• literally, the drawer of the kitchen

Portuguese often expresses this kind of relationship with de:

• a porta da casa = the door of the house / the house door
• a mesa da sala = the living room table

Because Portuguese usually prefers a structure with de instead of stacking nouns the way English does.

English:

• kitchen drawer
• car door
• coffee cup

Portuguese usually says:

• gaveta da cozinha = drawer of the kitchen
• porta do carro = door of the car
• chávena de café = cup of coffee

So gaveta da cozinha is the normal Portuguese way to express kitchen drawer.

Yes, it is completely normal.

The order is:

• Eu = subject
• guardo = verb
• o ralador = direct object
• na gaveta da cozinha = place expression

So the structure is basically: Subject + Verb + Object + Place

This is the most neutral and natural order in Portuguese.

Yes, grammatically you could, but it sounds less neutral.

The most natural version is:

• Eu guardo o ralador na gaveta da cozinha.

If you move o ralador later, it may sound more marked or stylistic:

• Eu guardo na gaveta da cozinha o ralador.

A native speaker would usually choose the original sentence unless there is a reason to emphasize the location.

Not exactly.

• guardar = to keep, store, put away
• pôr = to put
• colocar = to place / put

So:

• Eu guardo o ralador na gaveta. suggests that this is where I keep it or put it away.

• Eu ponho o ralador na gaveta. focuses more on the action of putting it there.

• Eu coloco o ralador na gaveta. is also about placing it there, often slightly more formal or neutral.

In your sentence, guardar is a very natural choice if the idea is where the grater is usually kept.

It can mean either, depending on context, but in this sentence it most naturally suggests a habit or a general fact:

• I keep the grater in the kitchen drawer.

Portuguese present tense often covers:

• habitual actions
• general truths
• actions happening now

So Eu guardo o ralador na gaveta da cozinha will often be understood as That’s where I keep it.

If you wanted to make right now clearer, context or an adverb would help:

• Agora guardo o ralador na gaveta da cozinha. = I’m now putting the grater away in the kitchen drawer.

Because Portuguese uses definite articles much more often than English.

Here you have:

• o ralador = the grater
• na gaveta = in the drawer
• da cozinha = of the kitchen

In English, we often drop articles in combinations like kitchen drawer, but Portuguese usually keeps them:

• a gaveta da cozinha

This is normal and important to get used to. Portuguese tends to sound more article-heavy than English.

A broad European Portuguese pronunciation would sound roughly like:

• Eu guardo o ralador na gaveta da cozinha
• approximately: eh-o GWARD-too oo ruh-luh-DOR nuh guh-VEH-tuh duh koo-ZEE-nyuh

A few useful notes for Portugal Portuguese:

• eu often sounds closer to eh-o or yo depending on speed and speaker.
• Unstressed vowels are often reduced.
• cozinha has the nh sound, like ny in canyon.
• r in ralador is usually a stronger Portuguese r, not exactly like English.

Usually it means a specific drawer that is understood from context:

• the kitchen drawer
• or more naturally in English, the drawer in the kitchen

Because the sentence uses the definite article:

• a gaveta
• a cozinha

it sounds like a known or identifiable drawer, not just any random drawer.

If you wanted a drawer in the kitchen, less specific, you might say:

• numa gaveta da cozinha = in a drawer in the kitchen

The sentence itself is perfectly good in both European and Brazilian Portuguese:

• Eu guardo o ralador na gaveta da cozinha.

The main differences would be pronunciation, not grammar.

A Brazilian speaker might pronounce the vowels more openly and clearly, while a European Portuguese speaker often reduces unstressed vowels more.

So as a learner of Portuguese from Portugal, the structure is fully correct and natural for Portugal Portuguese.