gineungsiheom jeone pyeonghaeng juchareul yeonseuphaessseupnida.

In this sentence, 기능시험 means a skills test, and in context it most likely refers to a driving skills test.

• 기능 = function, skill, ability
• 시험 = test, exam

So in a driver's-license context, 기능시험 is the practical test where basic driving skills are checked.

Because Korean uses postpositions, not prepositions.

In English, you say before the test. In Korean, you say test before:

• 기능시험 전에 = before the skills test

The pattern is:

• noun + 전에 = before the noun

Examples:

• 수업 전에 = before class
• 식사 전에 = before the meal

Because 전에 attaches directly to the noun phrase.

So you say:

• 기능시험 전에

not:

• 기능시험을 전에

That is because 전에 already turns the noun into a time expression meaning before X.

A useful comparison:

• 시험 전에 = before the test
• 시험 후에 = after the test

평행 주차 means parallel parking.

• 평행 = parallel
• 주차 = parking

The 를 is the object marker. It marks 평행 주차 as the thing being practiced.

So:

• 평행 주차를 연습했습니다 = practiced parallel parking

Here, 연습하다 means to practice, and what you practice gets marked with 을/를.

You may see both 평행 주차 and 평행주차.

In real Korean writing, spacing with compound nouns can vary, and both forms are understandable. For a learner, the important thing is recognizing that both refer to parallel parking.

So if you encounter either form, do not be confused.

Because Korean normally follows Subject-Object-Verb order, and the verb usually comes at the end of the sentence.

This sentence is structured like:

• 기능시험 전에 = before the skills test
• 평행 주차를 = parallel parking
• 연습했습니다 = practiced

So the literal order is roughly:

• Before the skills test, parallel parking practiced

That sounds strange in English, but it is normal in Korean.

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

So this sentence does not need to say 저는 or 제가.

Depending on context, it could mean:

• I practiced parallel parking before the skills test
• He/She practiced parallel parking before the skills test
• We practiced parallel parking before the skills test

If the meaning shown to the learner is I practiced..., then the speaker is simply leaving I unstated, which is very common in Korean.

연습했습니다 comes from the verb 연습하다 = to practice.

Breakdown:

• 연습하- = verb stem
• -았/었- = past tense
• -습니다 = formal polite ending

So 연습했습니다 means practiced in a formal polite style.

Related forms:

• 연습했어요 = polite, less formal
• 연습했다 = plain form
• 연습했습니다 = formal polite

So this sentence sounds like something you might see in a textbook, report, interview response, or formal conversation.

Yes, often you can.

• 기능시험 전 = before the skills test
• 기능시험 전에 = before the skills test

Both are common, but 전에 feels more clearly adverbial inside a full sentence.

For example:

• 기능시험 전 평행 주차를 연습했습니다.
• 기능시험 전에 평행 주차를 연습했습니다.

Both are natural. For learners, 전에 is often easier to understand and use consistently.

Yes. The most direct casual-polite version would be:

• 기능시험 전에 평행 주차를 연습했어요.

That has the same meaning, but it sounds less formal than 연습했습니다.

A plain-form version would be:

• 기능시험 전에 평행 주차를 연습했다.

That form might be used in writing, diaries, narration, or casual speech depending on context.

Yes. Another natural phrasing is:

• 평행 주차 연습을 했습니다

So the full sentence could also be:

• 기능시험 전에 평행 주차 연습을 했습니다.

This literally means did parallel-parking practice.

Both are natural:

• 평행 주차를 연습했습니다
• 평행 주차 연습을 했습니다

The first focuses a little more on practicing the action. The second focuses a little more on doing practice as a noun-like activity.