Ich trage heute denselben Pullover wie gestern.

Because Pullover is the direct object of tragen, and tragen takes the accusative case.

• der Pullover = nominative
• den Pullover = accusative

The word derselbe changes its form to match the noun, so:

• derselbe Pullover = nominative masculine
• denselben Pullover = accusative masculine

So in this sentence, Ich is doing the action, and denselben Pullover is what is being worn.

denselben comes from derselbe, which means the same.

In this sentence, it means the speaker is wearing the very same sweater, not just a similar one.

A useful distinction is:

• derselbe Pullover = the same sweater, the identical physical item
• der gleiche Pullover = an identical/similar sweater of the same type

In everyday spoken German, people often use derselbe and der gleiche less strictly than grammar books suggest, but the traditional difference is still good to know.

Because denselben already includes the article-like part.

Historically and grammatically, derselbe works like a combination of:

• der / den / dem ...
• plus selbe

So denselben Pullover already contains the meaning of the same sweater. You do not say:

• den denselben Pullover ❌

Just:

• denselben Pullover ✅

Because derselbe declines like a determiner + adjective combination.

In denselben Pullover:

• den- shows masculine accusative
• -selben takes the weak adjective ending -en

So the full form becomes:

• denselben
  • Pullover

You do not need to memorize all the historical details, but it helps to think of derselbe as a word that must fully agree with the noun in gender, number, and case.

Because German uses wie for comparisons of equality/sameness.

Here the idea is:

• the same sweater as yesterday

So:

• wie gestern = as yesterday

This is similar to other German comparison patterns:

• so groß wie du = as tall as you
• genauso schnell wie vorher = just as fast as before

By contrast, als is used for comparisons of difference:

• größer als gestern = bigger than yesterday

So in this sentence, wie is the correct word.

No preposition is needed. Gestern is an adverb here, meaning yesterday.

So:

• wie gestern = as yesterday / as I did yesterday

German often uses time words as adverbs with no article or preposition:

• heute = today
• morgen = tomorrow
• gestern = yesterday

That is why wie gestern sounds natural and complete.

German main clauses follow the verb-second rule:

• the conjugated verb usually comes in second position

Here the structure is:

• Ich = position 1
• trage = position 2
• heute = then comes a time expression
• denselben Pullover wie gestern = the rest of the sentence

So this is completely normal:

• Ich trage heute denselben Pullover wie gestern.

You could also move heute to the front for emphasis:

• Heute trage ich denselben Pullover wie gestern.

That would mean something like Today, I’m wearing the same sweater as yesterday.

Here, tragen means to wear.

German uses tragen for wearing things like:

• clothes
• glasses
• shoes
• jewelry

Examples:

• Ich trage eine Jacke. = I’m wearing a jacket.
• Sie trägt eine Brille. = She wears / is wearing glasses.

But tragen can also mean other things in other contexts, such as:

• to carry
• to bear
• to support

So the meaning depends on context. With clothing, wear is the natural translation.

Yes. That is very natural German too.

Both sentences are correct:

• Ich trage heute denselben Pullover wie gestern.
• Ich habe heute denselben Pullover an wie gestern.

The second one uses anhaben, which is very common in everyday speech for to have on / to be wearing.

In a main clause, anhaben splits:

• Ich habe ... an

So both versions are good, but:

• tragen can sound slightly more neutral or standard
• anhaben often feels a bit more conversational

Because Pullover is a noun, and all nouns in German are capitalized.

So:

• ich = not capitalized unless it starts the sentence
• Pullover = capitalized because it is a noun

This is one of the most noticeable spelling rules in German.

Usually, yes. Pullover commonly means sweater or jumper.

Depending on the region and context, English translations may vary a little:

• American English: often sweater
• British English: often jumper

German Pullover usually refers to a knitted or sweater-like upper garment, especially one you pull over your head.

Almost, but not perfectly.

Word by word:

• Ich = I
• trage = wear/am wearing
• heute = today
• denselben Pullover = the same sweater
• wie gestern = as yesterday

A very close natural English translation is:

• I’m wearing the same sweater today as yesterday.
• I’m wearing the same sweater as yesterday.

So the structure is similar, but English may phrase it a little differently to sound natural.