tǐjiǎn yǐhòu, qǐng qù chēguǎnsuǒ.

体检 means a physical examination / medical checkup.

It can work as:

• a noun: 体检 = the medical exam
• a verb: 体检 = to get a medical exam

In this sentence, 体检以后 is most naturally understood as after the medical exam or after having the exam. Chinese often does not mark the noun/verb difference as clearly as English does, so one form can do both jobs depending on context.

以后 means after, later, or afterwards, depending on context.

In 体检以后, it means:

• after the medical exam
• literally: medical-exam after

A very common Chinese pattern is:

• event/time + 以后 + main action

So here:

• 体检以后 = after the physical exam
• 请去车管所 = please go to the vehicle administration office

Together: After the physical exam, please go to the vehicle administration office.

In Mandarin, time expressions often come before the main verb. This is much more common than in English.

So Chinese often prefers:

• 体检以后，请去车管所。
• literally: After the medical exam, please go to the DMV.

This fronted time phrase sets the context first, then gives the action. That word order is very natural in Chinese.

You could think of the structure as:

• [When?] 体检以后
• [What to do?] 请去车管所

The subject is understood from context.

Chinese very often omits subjects when they are obvious. In a notice, instruction, or spoken direction, you does not need to be said.

So:

• 请去车管所。
  means
• Please go to the vehicle administration office.

Even though 你 is not there, the sentence clearly addresses the listener or reader.

If you added 你, it would still be understandable:

• 你体检以后，请去车管所。

But it is usually less natural in this kind of instruction unless you specifically need to emphasize you.

Yes, 请 often corresponds to please, but it is not always used exactly the same way English uses please.

Here, 请去车管所 means:

• please go to the vehicle administration office
• or more formally, you are requested to go to the vehicle administration office

In notices, official instructions, and service situations, 请 is very common and sounds polite but also somewhat formal.

A useful pattern is:

• 请 + verb

Examples:

• 请坐。 = Please sit down.
• 请等一下。 = Please wait a moment.
• 请去车管所。 = Please go to the vehicle administration office.

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

In practice, learners often think of it as something like:

• the DMV
• the motor vehicle office
• the vehicle registration office

The exact translation can vary by country, but DMV is often the easiest practical equivalent for English speakers.

Also, this word is a good example of Chinese abbreviation:

• 车 from 车辆
• 管 from 管理
• 所 from 管理所

So 车管所 is a shortened official term.

In Chinese, the verb 去 already means to go, and the destination usually comes directly after it.

So:

• 去车管所 = go to the vehicle administration office

Chinese does not need a separate word equivalent to English to here.

Pattern:

• 去 + place

Examples:

• 去学校 = go to school
• 去医院 = go to the hospital
• 去车管所 = go to the DMV / vehicle administration office

This is a very common structure.

Yes, 体检后 is also correct.

Both mean after the medical exam, but there is a slight difference in style:

• 以后 is very common and neutral
• 后 is shorter and often feels a bit more concise or formal, especially in written instructions

So these are both fine:

• 体检以后，请去车管所。
• 体检后，请去车管所。

In an official notice, 体检后 may sound a little more compact. In everyday speech, 以后 is very common.

The comma separates the time/background part from the main instruction.

So the sentence is divided like this:

• 体检以后， = after the medical exam,
• 请去车管所。 = please go to the vehicle administration office.

This kind of comma is very common in Chinese when a sentence begins with:

• a time phrase
• a condition
• a background setting

It helps the reader hear the pause and understand the structure more easily.

Yes, 以后 is flexible and can refer to:

• a time after a certain event
• a more general later period following something

In this sentence, the meaning is clearly:

• after the physical exam is completed

Because it is followed by a specific instruction:

• please go to the vehicle administration office

So here it does not sound vague. It means the next step happens after the medical checkup.

Yes. In natural speech, some third-tone sandhi happens.

The written pinyin is:

• 体检 tǐjiǎn
• 以后 yǐhòu
• 请 qǐng
• 去 qù
• 车管所 chēguǎnsuǒ

But when spoken naturally:

• 体检 often sounds like tíjiǎn
• 以后 often sounds like yíhòu

That is because when a third tone comes before another third tone, the first one usually changes to a rising tone in actual pronunciation.

So although it is written:

• tǐjiǎn yǐhòu

it is commonly pronounced more like:

• tíjiǎn yíhòu

The pinyin spelling usually stays the same, but the spoken rhythm changes.

It sounds polite and somewhat official.

Because of:

• 请 = polite/request language
• 车管所 = an official government-related place
• the overall short, direct instruction style

This feels like something you might see:

• on a form
• in a clinic
• in an instruction sheet
• from staff giving procedural directions

It is not overly stiff, but it is definitely more like official guidance than casual conversation.

In everyday spoken Mandarin, people might say something a little more natural and explicit, such as:

• 体检以后，你去车管所。
  After the physical exam, you go to the vehicle administration office.

• 体检完以后，请去车管所。
  After finishing the physical exam, please go to the vehicle administration office.

• 体检做完以后，请去车管所。
  After completing the medical exam, please go to the vehicle administration office.

Adding 完 or 做完 emphasizes that the exam is finished. That can sound especially natural in speech if you want to make the sequence very clear.