kanozyo ha rippana isya desu.

Because when は is used as the topic particle, it is pronounced wa.

So in this sentence:

• 彼女は = as for her / she
• Written: は
• Pronounced: wa

This is a very common point in Japanese:

• は as a normal syllable in a word: usually ha
• は as a particle: wa

は marks the topic of the sentence.

In 彼女は立派な医者です, the topic is 彼女 (she / her), and the rest of the sentence says something about her.

A natural way to think about it is:

• 彼女は = As for her, ...
• 立派な医者です = (she) is an excellent / admirable doctor

So は does not exactly equal an English word. It shows what the sentence is about.

Because 立派 is a na-adjective, not an i-adjective.

In Japanese, there are two major adjective types:

• i-adjectives: for example, 大きい
• na-adjectives: for example, きれい, 有名, 立派

When a na-adjective comes directly before a noun, it usually takes な:

• 立派な医者 = an admirable doctor
• きれいな花 = a pretty flower

So 立派な is the correct form before 医者.

The な connects a na-adjective to the noun it modifies.

Here:

• 立派な modifies
• 医者

So:

• 立派な医者 = an admirable / fine / excellent doctor

If 立派 is not directly modifying a noun, you usually do not use な:

• 彼女は立派です。 = She is admirable.

But before a noun:

• 立派な医者 = an admirable doctor

立派 often means something like:

• excellent
• fine
• splendid
• admirable
• respectable

In this sentence, it suggests more than just professional ability. It can imply that she is an impressive, respectable, or worthy doctor.

So 立派な医者 is not just a doctor, but a very fine / admirable doctor.

Both relate to doctors, but they are used a little differently.

• 医者 is the common everyday word for doctor
• 医師 is more formal or official

In normal conversation, 医者 is very natural.

So:

• 彼女は立派な医者です。 sounds like natural everyday Japanese.
• 彼女は立派な医師です。 is possible, but sounds more formal.

Japanese does not have articles like English a, an, and the.

So 医者 can mean:

• a doctor
• the doctor
• sometimes just doctor as a role or profession

The exact meaning depends on context.

In this sentence, English naturally uses a doctor:

• She is an admirable doctor.

But Japanese does not need a separate word for a/an.

です is the polite copula. In this sentence, it makes the statement polite and complete.

You can think of it as similar to is / am / are, although it does not match English exactly word-for-word.

So:

• 彼女は立派な医者です。 = polite
• 彼女は立派な医者だ。 = plain / less polite

Both mean basically the same thing, but です is the standard polite form learners usually see first.

Yes, but the nuance changes.

• 彼女は立派な医者です。
  This presents her as the topic: As for her, she is an admirable doctor.

• 彼女が立派な医者です。
  This puts stronger focus on her as the subject, often like: She is the admirable doctor or It is she who is the admirable doctor, depending on context.

For a simple neutral statement, は is usually the more natural choice.

Not always. 彼女 can also mean girlfriend, depending on context.

Examples:

• 彼女は医者です。 = She is a doctor.
• 彼女がいます。 = often I have a girlfriend.

In your sentence, because it is followed by は and describes a person’s profession, it clearly means she.

Also, in real Japanese conversation, people often use a person’s name instead of 彼女, or they omit the subject entirely if it is already clear.

Yes, a little.

Japanese often works like this:

• topic + description
• modifiers come before the noun

So:

• 彼女は = topic
• 立派な = modifies the noun
• 医者 = noun
• です = polite sentence ending

A structure view would be:

• 彼女は
  • [立派な 医者]
    • です

English says:

• She is an admirable doctor.

Japanese says something closer to:

• As for her, admirable doctor is.

Of course, that last version is only a rough way to see the structure, not a natural English translation.

No. Standard Japanese is usually written without spaces.

So normally this sentence is written as:

彼女は立派な医者です。

Spaces are often added in beginner materials to make it easier to see the parts of the sentence.

Yes, very often.

If the context already makes it clear who you are talking about, Japanese often omits 彼女は completely:

• 立派な医者です。

Depending on context, that could mean:

• She is an admirable doctor
• He is an admirable doctor
• They are admirable doctors
• or even (This person) is an admirable doctor

Japanese relies heavily on context, much more than English does.