jadongcha gyeonjeokseoreul boheom hoesa jigwonege bonaesseoyo.

In Korean, one noun often comes before another noun to modify it, similar to English noun compounds like car insurance or price estimate.

So:

• 자동차 = car / automobile
• 견적서 = estimate document / quotation sheet

Together, 자동차 견적서 means car estimate document or estimate for a car.

This is very common in Korean:

• 보험 회사 = insurance company
• 회사 직원 = company employee
• 자동차 보험 = car insurance

The first noun narrows or describes the second noun.

• 견적 = an estimate / a quote
• 견적서 = a written estimate, quote document, estimate sheet

The -서 part often means a written document. So 견적서 is not just the idea of an estimate, but the actual document containing that estimate.

Compare:

• 견적을 받았어요 = I received a quote/an estimate.
• 견적서를 보냈어요 = I sent the written estimate document.

-를 is the object marker. It marks the thing that is being sent.

So in this sentence:

• 자동차 견적서를 = the car estimate document
• 보험 회사 직원에게 = to the insurance company employee
• 보냈어요 = sent

The object marker tells you that 견적서 is the thing being acted on.

Because 견적서 ends in a vowel, you use -를 rather than -을.

-에게 marks the recipient, usually a person or animate being. It often corresponds to to in English.

So:

• 보험 회사 직원에게 = to the insurance company employee

In this sentence, the estimate document is sent to that employee.

A useful pattern is:

• A를 B에게 보내다 = to send A to B

For example:

• 편지를 친구에게 보냈어요. = I sent a letter to a friend.
• 이메일을 선생님에게 보냈어요. = I sent an email to the teacher.

Yes. -한테 also means to someone, and in everyday conversation it is very common.

So this sentence could also be:

• 자동차 견적서를 보험 회사 직원한테 보냈어요.

The difference is mainly tone:

• -에게 = a bit more neutral or slightly more formal
• -한테 = more conversational

Both are natural here.

Korean often omits the subject when it is already understood from context.

So 자동차 견적서를 보험 회사 직원에게 보냈어요 naturally means something like:

• I sent the car estimate document to the insurance company employee
• or (someone) sent..., depending on context

In real Korean, if the speaker is talking about their own action, the subject 저는 or 제가 is often omitted because it is obvious.

If you want to include it, you could say:

• 저는 자동차 견적서를 보험 회사 직원에게 보냈어요.

The dictionary form is 보내다, which means to send.

Breakdown:

• 보내다 = to send
• 보냈어요 = sent / have sent

This is the past polite form.

Very roughly:

• 보내다
• 보내 + ㅆ어요
• 보냈어요

So 보냈어요 is the polite past-tense form used in everyday conversation.

-어요 is part of the polite conversational style, often called 해요체.

So 보냈어요 sounds polite and natural in ordinary speech. It is less formal than 보냈습니다, but more polite than plain casual 보냈어.

Compare:

• 보냈어 = casual
• 보냈어요 = polite everyday speech
• 보냈습니다 = formal polite

This sentence is written in standard polite conversational Korean.

Yes. Korean word order is flexible as long as the particles stay attached to the right words.

The original sentence:

• 자동차 견적서를 보험 회사 직원에게 보냈어요.

A very natural alternative:

• 보험 회사 직원에게 자동차 견적서를 보냈어요.

Both mean the same thing: sent the car estimate document to the insurance company employee.

Korean often places emphasis by moving phrases around, but the particles -를 and -에게 keep the roles clear.

You may see both 보험 회사 and 보험회사.

Both are understandable, and 보험회사 is very common as a single compound noun meaning insurance company. Writing it as two words is also seen, especially in less strict or more spaced writing styles.

So:

• 보험회사 직원 = insurance company employee
• 보험 회사 직원 = same meaning

In learning materials, spacing can vary with compound nouns, so do not be surprised by that.

직원 specifically means staff member, employee, or worker. It is more precise than 사람, which just means person.

So:

• 보험 회사 직원 = insurance company employee/staff member
• 보험 회사 사람 = insurance company person

The second one is understandable but less natural and less specific. If you know the person is an employee, 직원 is the better word.

Sometimes 에 can mark a destination or target, but for a human recipient, 에게 is the clearer and more standard choice.

So:

• 직원에게 보냈어요 = sent it to the employee

Using 에 with a person here would sound less standard. For people, use:

• 에게
• 한테
• in formal writing, sometimes 께 for honorific situations

Example:

• 선생님께 보냈어요. = I sent it to the teacher.
  This is more respectful.

A more formal version would be:

• 자동차 견적서를 보험회사 직원에게 보냈습니다.

The main change is:

• 보냈어요 → 보냈습니다

This makes the sentence sound more formal, such as in business Korean, presentations, reports, or formal customer communication.

In careful spelling it is 견적서를, but in natural pronunciation the consonants can sound a bit tighter, so learners may hear something close to:

• 견적써를

This is due to Korean sound changes. You do not need to change the spelling, but it helps to know that actual pronunciation may sound stronger than the written form suggests.

So:

• written: 견적서를
• natural speech: approximately 견적써를

This kind of sound change is very common in Korean.