chúfēi xiān zuò tǐjiǎn, fǒuzé chēguǎnsuǒ bùnéng shěnhé shēnqǐngcáiliào.

除非 means unless. It introduces the condition that must be met.

In this sentence:

• 除非先做体检 = unless (someone) first gets a medical examination

A very common pattern is:

• 除非……，否则…… = unless..., otherwise...

So the logic is:

• If the medical exam is not done first, the next action cannot happen.

A useful thing to remember: 除非 often sets up the only condition under which something is possible.

否则 means otherwise.

So:

• 除非先做体检，否则车管所不能审核申请材料。 = Unless you first do the medical exam, otherwise the vehicle administration office cannot review the application materials.

In English, unless... otherwise... sounds a bit awkward if translated word for word, but in Chinese this pairing is very natural.

Is 否则 required?
Not always. The sentence could also be said as:

• 除非先做体检，车管所不能审核申请材料。

That is still understandable. But adding 否则 makes the contrast and consequence clearer and more explicit.

先 means first or before that.

In Chinese, 先 usually goes before the verb phrase it modifies:

• 先做体检 = first do the medical exam

So the order is very natural:

• 先 + verb/object

Examples:

• 先吃饭 = eat first
• 先申请 = apply first
• 先交材料 = submit the materials first

Here, 先做体检 means the medical exam must happen before the office can review the application.

Yes, this is a very common learner question.

体检 is short for 体格检查 and refers to a medical examination / physical checkup. In everyday Chinese, people often say:

• 做体检 = to get a physical exam
• 进行体检 = to carry out / undergo a physical exam

做体检 is common and natural in spoken and general written Chinese.

So even though 体检 is basically a noun, Chinese often uses 做 + noun to express doing or undergoing an activity:

• 做检查 = get an examination
• 做手术 = have an operation
• 做测试 = do a test

Yes. The subject is omitted.

Chinese often leaves out the subject when it is clear from context. In this sentence, the person who must 先做体检 is understood to be:

• the applicant
• you
• the person submitting the materials

So the sentence does not explicitly say you must first do the medical exam, but that is clearly implied.

This kind of omission is very common in Chinese, especially in formal notices, instructions, and procedures.

车管所 is short for 车辆管理所, which is the vehicle administration office.

It is a government office that handles things like:

• driver’s license matters
• vehicle registration
• transfers
• related application procedures

In this sentence, it is the organization doing the reviewing:

• 车管所不能审核申请材料 = the vehicle administration office cannot review the application materials

So 车管所 is the subject of the second clause.

不能 means cannot / not be able to / not be permitted to. It fits this sentence because the office is unable or not allowed to review the materials before the condition is met.

• 不能审核 = cannot review

不会 usually means:

1. will not
2. do not know how to

So 不会审核 would sound wrong here, because the problem is not that the office lacks the skill to review documents. The issue is that the necessary condition has not been met.

So 不能 is the correct choice.

No. 审核 is more formal than just look at.

审核 means something like:

• to examine and verify
• to review officially
• to check whether something meets requirements

It is often used in administrative, legal, business, or institutional contexts.

So:

• 审核申请材料 = review the application materials = check and verify the submitted documents

This is more formal and procedural than simply reading them.

申请材料 is a fixed and very common formal expression meaning application materials / application documents.

Chinese often forms compact noun phrases by putting one noun directly before another:

• 申请材料 = application materials
• 申请表 = application form
• 证明材料 = supporting documents

You could say 申请的材料 in some contexts, but it usually sounds less fixed and less official here. 申请材料 is the standard phrase used in notices and procedures.

So in this sentence:

• 审核申请材料 = review the application materials

Yes. A very common alternative is:

• 先做体检，车管所才能审核申请材料。 = Only after first doing the medical exam can the vehicle administration office review the application materials.

Or:

• 只有先做体检，车管所才能审核申请材料。 = Only if you first do the medical exam can the vehicle administration office review the application materials.

This version focuses on the required condition for something to happen, while the original 除非……否则…… structure focuses on unless..., otherwise...

Both express a similar basic idea, but the sentence pattern is different.

Some parts are flexible, but not completely.

The original structure is:

• 除非 + condition， 否则 + result

That pattern is very standard.

You could also say:

• 除非先做体检，否则不能审核申请材料。

If the subject 车管所 is already clear from context, it can be omitted.

But you would not normally move 否则 around freely. It should stay at the start of the second clause.

Also, 先 should stay before the verb phrase it modifies:

• natural: 先做体检
• unnatural: 做先体检

So the sentence has some flexibility, but the core grammar pattern should stay intact.

Often, yes. 除非 usually introduces an exception to a negative or undesired result.

In this sentence, the negative result is:

• 车管所不能审核申请材料 = the office cannot review the application materials

The exception is:

• 除非先做体检 = unless the medical exam is done first

So the overall logic is:

• Normally, the review cannot happen.
• The exception is that it can happen if the exam is done first.

That is why 除非 is often associated with sentences involving 不能, 不会, 没办法, and similar expressions.

It sounds fairly formal and is especially natural in:

• official notices
• application instructions
• administrative procedures
• government-related communication

Words like 车管所, 审核, and 申请材料 are all fairly formal or administrative.

In everyday conversation, a speaker might say something less formal, such as:

• 你得先体检，不然车管所没法审材料。

That has the same basic meaning, but the style is more conversational.

So the original sentence is natural, but it belongs more to a formal procedural register than casual speech.