Ana se gândește la plan.

Because the verb here is a se gândi la, which means to think about.

In Romanian, se is the reflexive pronoun used with he/she/it and with names like Ana. So:

• Ana se gândește = Ana thinks / is thinking
• Ea se gândește = She thinks / is thinking

With other persons, the reflexive pronoun changes:

• mă gândesc = I think / am thinking
• te gândești = you think / are thinking
• ne gândim = we think / are thinking

So se is not optional here.

The dictionary form is a se gândi.

In this sentence, gândește is the 3rd person singular present form, matching Ana.

A quick present-tense pattern:

• eu mă gândesc
• tu te gândești
• el/ea se gândește
• noi ne gândim
• voi vă gândiți
• ei/ele se gândesc

So Ana se gândește is the correct form for Ana.

Because Romanian often distinguishes between:

• a gândi = to think, to consider, sometimes to devise or formulate
• a se gândi la = to think about, to have someone or something in mind

So in this sentence, if the idea is thinking about the plan, Romanian normally uses the reflexive form plus la:

• Ana se gândește la plan.

Without se and without la, the meaning changes or the sentence may sound incomplete for this idea.

Because se is an unstressed clitic pronoun, and in a normal declarative sentence it usually goes before the conjugated verb:

• Ana se gândește la plan.

This is the standard word order. Romanian does allow other orders in special cases, but for a basic sentence, se + verb is what you should expect.

Here la is the preposition required by a se gândi when you mean to think about someone or something.

So:

• a se gândi la ceva = to think about something
• a se gândi la cineva = to think about someone

In English, you say about. In Romanian, the usual preposition is la.

It can mean either one.

Romanian present tense often covers both:

• Ana thinks about the plan
• Ana is thinking about the plan

The exact English translation depends on context. Romanian does not need a separate form like English is thinking in order to express an action happening right now.

Plan is the bare noun form. Planul means the plan more explicitly.

So:

• plan = plan
• planul = the plan

If you want to clearly mark it as definite, you would use:

• Ana se gândește la planul...

For example:

• Ana se gândește la planul nostru. = Ana is thinking about our plan.

In short, plan is less explicitly definite than planul.

A good rough guide is guhn-DESH-teh, but that is only approximate.

A few key points:

• â is a Romanian vowel with no exact English equivalent
• ș is pronounced like sh in ship
• the stress falls on deș: gân-DEȘ-te

So:

• gândește ≈ guhn-DESH-teh

If you want the whole sentence roughly:

• Ana se gândește la plan
• ≈ AH-na seh guhn-DESH-teh la plan

In modern Romanian spelling, â and î represent the same sound.

The usual spelling rule is:

• î at the beginning or end of a word
• â inside a word

So:

• în = in
• a urî = to hate
• gând = thought
• gândește = thinks / is thinking

That is why you see â inside gândește.

This is the most neutral, standard order:

• Ana = subject
• se gândește = verb phrase
• la plan = prepositional complement

Romanian word order is somewhat flexible, so other orders are possible for emphasis, but this version is the normal one learners should use first.

Yes, it can.

Romanian often omits subject pronouns and sometimes even names if the context is clear. So:

• Se gândește la plan. = She is thinking about the plan.

However, with 3rd person singular, the verb form by itself does not tell you whether the subject is he, she, or even a formal you, so keeping Ana can make the sentence clearer.

You add nu before the verb phrase:

• Ana nu se gândește la plan.

So the order is:

• nu + reflexive pronoun + verb

Examples:

• Ana se gândește la plan. = Ana is thinking about the plan.
• Ana nu se gândește la plan. = Ana is not thinking about the plan.

In simple speech, Romanian often uses the same word order and changes the intonation:

• Ana se gândește la plan?

That means:

• Is Ana thinking about the plan?
• or Does Ana think about the plan?

You can also make the question clearer through context or intonation, but the basic sentence form often stays the same.