tā qù yīyuàn qù de tài wǎn, chàdiǎnr méi guàshànghào.

This is a very common Chinese pattern.

The first 去 means go to and takes 医院 as its destination:

• 去医院 = go to the hospital

The second 去 appears because the speaker wants to add a complement after the verb:

• 去得太晚 = went too late

In Chinese, when a verb has an object and you also want to add a 得-complement, the verb is often repeated:

• 她去医院去得太晚
• literally: she go hospital go DE too late

This is similar to patterns like:

• 他睡觉睡得很好 = He slept very well.
• 她汉字写得很漂亮 = She writes Chinese characters beautifully.

So the repeated 去 is grammatical and natural here.

Here 得 is a structural particle, not the verb to get.

In this sentence, it links the verb to a complement:

• 去得太晚 = went too late

So the structure is:

• verb + 得 + complement

Examples:

• 说得很快 = speak very fast
• 写得很好 = write very well
• 来得太晚 = come too late

Also, this 得 is pronounced de in a neutral tone here, not dé and not děi.

Because 得-complements normally come directly after the verb, and the object usually cannot just sit between the verb and 得.

So this is not the usual pattern:

• 她去医院得太晚 ✘

Instead, Chinese typically does one of these:

1. Repeat the verb

   • 她去医院去得太晚

2. Sometimes move the object elsewhere, depending on the sentence

   • similar idea in other examples: 汉字她写得很好

In your sentence, repeating the verb is the most natural solution.

In Chinese, 去 itself already means go to somewhere, so you usually do not need a separate word equivalent to English to.

• 去医院 = go to the hospital
• 去学校 = go to school
• 去北京 = go to Beijing

So 医院 works directly as the destination after 去.

Also, Chinese usually does not use articles like the or a, so 医院 can mean the hospital, a hospital, or just hospital, depending on context.

Yes—this is a set expression, and the literal character meanings are not very helpful here.

In a hospital context, 挂号 means something like:

• register at the hospital
• get registered for a consultation
• take a registration number
• sign in for an appointment

So it refers to the process of getting officially entered into the system so you can see a doctor.

This is one of those cases where you should learn the whole expression as vocabulary rather than trying to build the meaning character by character.

Here 上 is a result complement. It shows that the action was successfully achieved.

Compare:

• 挂号 = register / sign up
• 挂上号 = successfully get registered

So 上 here does not literally mean up. It indicates that the desired result was reached.

This use of 上 appears in many verbs:

• 买上票 = manage to get tickets
• 找上工作 = manage to find a job
• 赶上车 = catch the bus/train

So 挂上号 suggests success after effort or difficulty.

This is one of the trickiest parts of the sentence.

In this context, 差点儿没挂上号 usually means:

• she almost failed to get registered
• she just barely managed to get registered

So the usual implication is:

• she did get registered in the end

Why is 没 there? Because the phrase is built around the negative result:

• 没挂上号 = did not manage to register

So:

• 差点儿没挂上号 = was very close to not managing to register

This pattern can be confusing because 差点儿 with and without 没 can behave differently depending on context, and in real speech it is sometimes not perfectly logical from an English learner’s perspective. In this sentence, the intended meaning is normally:

• She went to the hospital too late and almost didn’t manage to register.

The 儿 is part of 儿化 (the -r ending), which is common in many varieties of Mandarin, especially Beijing-style speech.

So:

• 差点 and 差点儿 are closely related
• 差点儿 is very common in speech

It is pronounced roughly like chàdiǎnr.

The 儿 does not change the basic meaning very much here; it mainly affects pronunciation and style.

Here it means too late.

• 太 + adjective often means too...
• 太晚 = too late

So:

• 去得太晚 = went too late

In some contexts, 太 can feel like so or very, especially in exclamations, but here the sense is clearly that the timing was late enough to cause a problem—namely, she almost could not register.

Yes, that sentence is possible, but the focus is a little different.

• 她太晚去医院了 emphasizes the timing of her going to the hospital in a more straightforward way.
• 她去医院去得太晚 uses the verb + 得 + complement pattern, which more explicitly comments on how late the action of going was.

So both can work, but the original sentence is especially useful because it shows a very common Chinese grammar pattern: verb repetition + 得-complement.

Good question. 了 is possible in many sentences about changed situations or completed events, but it is not required every time.

Here the sentence already has a complete structure:

• 她去医院去得太晚，差点儿没挂上号。

The idea of a completed past event is understood from context. Chinese often leaves tense and aspect unstated if they are clear.

You could hear something like:

• 她去医院去得太晚了，差点儿没挂上号。

That would also be natural, and it may sound a bit more emphatic. Without 了, the sentence is still perfectly fine.

No. In standard Mandarin, 她 and 他 are both pronounced tā.

So in speech, you cannot tell the difference from pronunciation alone. You need context.

The distinction is mainly a written one:

• 他 = he
• 她 = she

This often surprises English speakers, because spoken Mandarin does not make that gender distinction in pronunciation.