tā de zhèngzhuàng bǐ zuótiān hǎozhuǎn duō le.

的 marks possession or association. So 她的症状 means her symptoms.

A useful way to see it is:

• 她 = she / her
• 她的 = her
• 她的症状 = her symptoms

In English, her changes form, but in Chinese, 她 stays the same and 的 shows the possessive relationship.

症状 means symptoms, such as fever, cough, pain, dizziness, and so on.

It is not the same as 病:

• 病 = illness / disease
• 症状 = symptoms of the illness

So 她的症状 focuses on the signs of her condition, not the disease itself.

比 is the basic comparison marker in Chinese. It works like than in English, but the structure is different.

The pattern is:

A + 比 + B + predicate

In this sentence:

• A = 她的症状
• B = 昨天
• predicate = 好转多了

So the sentence literally works like:

Her symptoms, compared with yesterday, have improved a lot more.

A more natural English translation is:

Her symptoms are much better than yesterday.

Chinese often leaves out words that are understood from context.

Here, 比昨天 already clearly means compared with yesterday or compared with how things were yesterday. You do not need to repeat 症状.

If you expanded the idea fully, it would be something like:

• 她的症状比昨天的症状好转多了

But that sounds repetitive and unnatural. Chinese prefers the shorter version:

• 她的症状比昨天好转多了

好转 means to improve or to take a turn for the better, especially for health or a medical condition.

It is most often treated as a verb in this kind of sentence.

Examples:

• 病情好转了。 = The illness has improved.
• 症状好转了。 = The symptoms have improved.

In English we often say better, which feels adjectival, but in Chinese 好转 is commonly a verb meaning improve.

Because 好转 is more specific and natural for illness, symptoms, and medical conditions.

Compare:

• 好 = good / better
• 好转 = improve, get better, take a turn for the better

With 症状, 好转 is more precise because symptoms do not simply become good; they improve.

So:

• 她的症状好转了。 = Her symptoms have improved.

This sounds more natural than trying to say the symptoms are simply good.

Here 多 does not mean a number of things. It is part of the pattern …多了, which means much more, a lot more, or considerably.

So in this sentence, 好转多了 means:

• improved a lot
• much better

This is a very common Chinese pattern.

Examples:

• 天气暖和多了。 = The weather is much warmer.
• 他快多了。 = He is much faster.
• 病情好转多了。 = The condition has improved a lot.

The final 了 shows a change of state or a new situation.

Here it tells us that the symptoms are now in a changed condition: they are noticeably better than before.

So 多了 often gives the sense of:

• much more now
• a lot better now
• noticeably changed

Without 了, the sentence would sound less complete or less natural in this context.

Compare:

• 她的症状比昨天好转多了。 = Her symptoms are much better than yesterday.
• Without 了, the sense of current change is weaker.

Yes. It is very useful.

After an adjective or a verb phrase, 多了 often means much more or a lot more than before.

Common examples:

• 好多了 = much better
• 清楚多了 = much clearer
• 方便多了 = much more convenient
• 好转多了 = improved a lot

It is one of the most useful everyday patterns for talking about change.

Not with the same meaning.

• 她的症状比昨天好转多了 = Her symptoms are much better than yesterday
• 她的症状昨天好多了 would sound like yesterday her symptoms were much better, which changes the time reference

If you want to say Her symptoms are much better today than yesterday, you could also say:

• 她的症状今天比昨天好多了。
• 她的症状比昨天好多了。

That version is also very common. The original sentence is just a little more medical/formal because it uses 好转.

Yes, absolutely. Chinese often compares the present situation with a previous time using a time word directly.

Examples:

• 今天比昨天冷。 = Today is colder than yesterday.
• 我比以前忙。 = I am busier than before.
• 她的症状比昨天好转多了。 = Her symptoms are much better than yesterday.

So 比 + time word is very normal in Chinese.

Chinese often leaves out repeated ideas when they are obvious.

English often says:

• better than it was yesterday

Chinese does not need to say the equivalent of it was here. The comparison is already clear from:

• 比昨天

Chinese is usually more compact in these comparison sentences.

Sometimes, but the feeling is slightly different.

• 好转多了 is very common and natural
• 好转很多 can also work and means improved a lot

However, 多了 is especially common when comparing a present state with an earlier one. It has a strong changed from before feeling.

So in this sentence, 好转多了 sounds very natural.

It is fairly natural and slightly medical in tone because of 症状 and 好转.

• 症状 is a medical or health-related word
• 好转 is also commonly used in medical contexts

In casual speech, people might say:

• 她好多了。 = She is much better.
• 她的情况比昨天好多了。 = Her condition is much better than yesterday.

The original sentence sounds like something you might hear from a doctor, nurse, or family member describing someone’s health more precisely.

A helpful breakdown is:

她的症状 + 比昨天 + 好转多了

Which means:

1. topic / subject: her symptoms
2. comparison phrase: compared with yesterday
3. result / comment: have improved a lot

So a useful pattern to remember is:

Noun + 比 + earlier time/reference + verb/adjective + 多了

Examples:

• 他比以前成熟多了。 = He is much more mature than before.
• 这个办法比原来方便多了。 = This method is much more convenient than before.
• 她的症状比昨天好转多了。 = Her symptoms have improved a lot compared with yesterday.