Reviewing Homework Mistakes | Learn Korean in English

Sentence explanations

1. 제 숙제에서 틀린 부분을 함께 복습할 수 있을까요?

   Could we review my homework mistakes?

   제

   my

   숙제

   homework

   에서

   in

   틀린

   wrong; incorrect

   부분

   part

   함께

   together

   복습할

   review

   수 있을까요?

   could it be possible?

   More detail

   제 means “my” here. It is the contracted form of 저의, with 저 meaning “I” and 의 marking possession. It identifies the homework as belonging to the speaker. 숙제 means “homework,” so 제 숙제 means “my homework.” 에서 marks the place or domain relevant to an action. Here, 숙제에서 locates the incorrect parts within the homework, giving the sense “in my homework.” The same marker can also mark the place where an action occurs in other sentences. 틀린 means “wrong” or “incorrect” here. It is the noun-modifying form of 틀리다, “to be wrong” or “to be incorrect”: 틀리다 → 틀린 before a noun. For example, 틀린 답 means “a wrong answer.” A useful contrast is 맞는 답, “a correct answer”; 맞는 comes from 맞다, “to be correct.” 부분 means “part” or “section.” In 틀린 부분, it means the parts that are wrong, which naturally refers to “mistakes” in this sentence. 부분 itself does not mean “mistake.” 함께 means “together” and indicates joint participation in the review. Example: 함께 공부해요 means “Let’s study together.” 복습할 comes from the verb 복습하다, “to review.” It is the -(으)ㄹ form used before 수 in -(으)ㄹ 수 있다, a construction expressing ability or possibility. For example, 내일 복습할 수 있어요 means “I can review tomorrow.” 수 있을까요? completes the possibility question. 수 is the bound noun in -(으)ㄹ 수 있다, and 있을까요? politely asks whether that possibility exists. Together with the preceding 복습할, 복습할 수 있을까요? asks “Could we review?” Putting the chunks together, 제 숙제에서 identifies the relevant location as the speaker’s homework, 틀린 부분 identifies the incorrect parts, 함께 adds joint participation, and 복습할 수 있을까요? politely asks about the possibility of reviewing them. The complete meaning is: “Could we review my homework mistakes together?”

2. 문장에 작은 오류 몇 가지를 표시했어요.

   I marked a few small sentence errors.

   문장

   sentence

   작은

   small

   오류

   error

   몇 가지

   a few (items)

   표시했어요

   marked

   More detail

   문장 means “sentence.” It is a noun and can be reused in compounds or phrases such as 문장 연습 (“sentence practice”). Here, 문장에 means “in/on the sentence”: 에 marks the place or area where the marking was made. 작은 means “small” here. It is the form of the descriptive verb 작다 (“to be small”) used before a noun. The related forms are 작다 (base form), 작아요 (polite present), and 작은 오류 (“small errors”). 오류 means “error.” It is a noun used for a mistake or defect, especially in a text or other result. 작은 오류 therefore means “small errors,” with 작은 describing 오류. 몇 가지 means “a few” or “several,” referring to a small, unspecified number of items. 몇 asks “how many,” while 가지 is a counting unit often used for kinds or items. In this sentence, the whole expression quantifies the errors; it does not mean “a few kinds” separately. 표시했어요 means “marked.” It comes from 표시하다 (“to mark” or “indicate”). -했어요 is the polite past form of this 하다-type verb: 표시하다 → 표시했어요. The sentence leaves the subject unstated, while the fixed translation identifies it as “I.” Together, 문장에 작은 오류 몇 가지 means “a few small errors in the sentence,” and 표시했어요 says that the speaker marked them. The complete utterance is therefore “I marked a few small sentence errors.”

3. 왜 이 부분을 고쳤어요?

   Why did you make this correction?

   왜

   why

   이

   this

   부분

   part; section

   고쳤어요

   fixed; corrected

   More detail

   왜 means “why” and asks for the reason for an action. It normally appears at the start of a question, as here. For example, 왜 웃어요? means “Why are you laughing?” 이 is the demonstrative meaning “this” when it directly modifies a noun. It identifies something associated with the speaker or the current situation; it does not change form for number or gender. Here, it modifies 부분, so 이 부분 means “this part” or “this section.” 부분 is a noun meaning “part” or “section.” Its meaning here is a portion of the sentence or text. A useful related contrast is 전체 (“the whole”): 이 부분 means “this part,” while 전체 means “the whole.” 고쳤어요 comes from the verb 고치다, “to fix” or “to correct.” The observed form expresses a completed past action in a polite style: 고치다 → 고쳤어요. The past marker is -었-, and -어요 gives the polite sentence ending. In this context, the verb means “corrected” rather than physically repaired. For example, 문장을 고쳤어요. means “I corrected the sentence.” The object phrase 이 부분을 combines “this part” with 을, the object marker. Thus, it identifies the part that was corrected. The question pattern 왜 ... 고쳤어요? asks for the reason someone performed that completed action. Together, 왜 이 부분을 고쳤어요? means “Why did you correct this part?” or, matching the fixed translation, “Why did you make this correction?”

4. 여기서는 명사에 관사가 필요해요.

   The noun needs an article here.

   여기서는

   here / in this context

   명사

   noun

   관사

   article

   필요해요

   is needed

   More detail

   여기서는 means “here” or, more precisely in this sentence, “in this context.” 여기 is “here,” and -는 marks the setting or topic being contrasted or discussed. The form can therefore be reused in patterns such as 여기서는 A가 필요해요 (“Here, A is needed”). 명사 means “noun,” a word category used for names of people, things, places, and other entities. It is a useful grammar term; for example, 이 단어는 명사예요 means “This word is a noun.” 관사 means “article,” the grammatical word used in some languages with a noun to show distinctions such as definiteness or indefiniteness. Korean itself does not have articles in the same way, so this term is especially useful when discussing another language’s grammar. Example: 영어에서는 관사가 중요해요 means “In English, articles are important.” 필요해요 means “is needed” or “is necessary” here. Its base form is 필요하다, and the polite present form is 필요해요. This is a descriptive predicate: the thing that is needed is marked with 이/가, as in 시간이 필요해요 (“Time is needed” / “I need time”). The form 필요해요 itself does not identify who needs it; the sentence simply states that something is necessary in the given context. Together, 여기서는 sets the context, 명사에 identifies the noun as the item concerned, 관사가 identifies the article as what is needed, and 필요해요 states the necessity. The whole utterance means: “The noun needs an article here.” It explains that, in this particular grammatical context, an article is required with the noun.

5. 몇 개 답에서 그걸 놓쳤어요.

   I missed that in a few answers.

   몇 개

   a few

   답

   answer

   그걸

   that

   놓쳤어요

   missed

   More detail

   몇 개 means “a few” here. 몇 asks “how many?” or indicates an unspecified small number, and 개 is a general counter for individual items. Together, 몇 개 can mean “a few” when the context makes the approximate number clear. For example: 사과 몇 개 means “a few apples.” 답 is the noun “answer.” Its plural meaning can be understood from context; Korean nouns do not need a separate plural ending when the number or situation already makes plurality clear. Here, 몇 개 supplies the count, so 답 is understood as “answers.” 그걸 is the object form of 그것 (“that thing”): 그것 + 을 contracts to 그걸. The ending -을 marks what the action affects. In this exchange, the surrounding context supports “that” as the item being discussed, namely the article mentioned in the nearby sentences. For example: 그걸 넣어요 means “I put that in.” 놓쳤어요 comes from the verb 놓치다, “to miss” or “to overlook.” The form 놓쳤어요 expresses a completed past event in a polite conversational style: 놓치다 → 놓쳤어요. It can describe failing to notice something or failing to catch an opportunity. Here it means “missed” in the sense of overlooking the item in the answers, not physically dropping it. For example: 중요한 부분을 놓쳤어요 means “I missed an important part.” The particle 에서 after 답 marks the place or scope where the action occurred, so 답에서 means “in the answer(s)” in this sentence. Combining the parts, 몇 개 답에서 means “in a few answers,” 그걸 identifies the thing that was overlooked, and 놓쳤어요 states that this happened in the past. The complete utterance therefore means: “I missed that in a few answers.”

6. 여기에 그걸 넣으면 문장이 완전해져요.

   Adding it here makes the sentence complete.

   여기에

   here

   그걸

   it / that

   넣으면

   if/when putting in

   문장이

   the sentence

   완전해져요

   becomes complete

   More detail

   여기에 means “here” with the location particle -에. It marks the place where the action happens. Example: 여기에 써요. — “I write here.” 그걸 is the conversational contraction of 그것을: 그것 (“that/it”) plus the object particle -을. In this utterance, the fixed translation identifies it as “it.” The object particle marks what is put in. Example: 그걸 봐요. — “I look at it.” 넣으면 comes from 넣다 (“to put in”) plus the conditional ending -으면: 넣다 → 넣으면. Because 넣다 has a consonant-ending stem, this form uses -으면 rather than -면. Here, the condition is “if/when it is put in”; Korean leaves the actor unspoken, while the English translation presents the action as “adding it.” Example: 여기에 넣으면 돼요. — “It is enough to put it here.” 문장이 is 문장 (“sentence”) plus the subject particle -이. It marks the sentence as the thing whose state changes. The particle -이 is used after a consonant-ending noun; after a vowel-ending noun, the corresponding subject particle is -가. Example: 문장이 길어요. — “The sentence is long.” 완전해져요 means “becomes complete.” Its useful base chain is 완전하다 (“to be complete”) → 완전해지다 (“to become complete”) → 완전해져요 (polite present form). The -어지다 pattern expresses a change into a state; here, the sentence changes into a complete state. The ending -요 makes the statement polite. Example: 날씨가 따뜻해져요. — “The weather becomes warm.” Together, 여기에 그걸 넣으면 sets up the condition “if/when it is added here,” and 문장이 완전해져요 states the result “the sentence becomes complete.” Thus the full utterance means “Adding it here makes the sentence complete.”

7. 지금 그 부분을 다시 쓸게요.

   I will rewrite that part now.

   지금

   now

   그

   that

   부분

   part

   다시 쓸게요

   will write again

   More detail

   지금 means “now” here. It places the action at the present time. A useful contrast is 지금 “now” versus 나중에 “later”: 지금 쓸게요 means “I’ll write it now,” while 나중에 쓸게요 means “I’ll write it later.” 그 is an attributive demonstrative meaning “that” before a noun. In 그 부분, it identifies a particular part already identifiable in the situation, without stating its exact identity. Korean demonstratives include 이 “this,” 그 “that,” and 저 “that over there”; the choice reflects the speaker’s spatial or discourse relation to the referent. 부분 is a noun meaning “part” or “section.” It can refer to one portion of a text, task, object, or other whole. For example, 이 부분을 읽으세요 means “Read this part.” The object marker 을 in 부분을 marks 그 부분 as the thing affected by the action. The noun ends in a consonant, so 을 is used; after a noun ending in a vowel, 를 is used instead. 다시 쓸게요 contains 다시 “again” and the verb form 쓸게요. The base form of 쓸게요 is 쓰다, “to write.” Its stem 쓰- combines with -(으)ㄹ게요 to make 쓸게요; this ending expresses the speaker’s intention or promise, often translated “I’ll …” in this context. 다시 says that the writing will be done again, so this is not simply “I’ll write.” For example, 이 문장을 다시 쓸게요 means “I’ll write this sentence again.” Together, 그 부분을 다시 쓸게요 means “I’ll rewrite that part”: 그 부분을 is the object, 다시 adds the idea of doing it again, and 쓸게요 presents the speaker’s polite intention to write it. With 지금 at the beginning, the complete utterance means “I will rewrite that part now.” The polite ending -요 makes the statement polite; -(으)ㄹ게요 is especially suitable when announcing what the speaker is going to do.

8. 그러면 그 규칙을 기억하는 데 도움이 될 거예요.

   That will help you remember the rule.

   그러면

   then; in that case

   그

   the; that

   규칙

   rule

   기억하는

   remembering

   도움

   help

   될 거예요

   will be; will become

   More detail

   그러면 means “then” or “in that case.” It connects the preceding situation with a consequence. Here, after the earlier statement about rewriting the part, it introduces the predicted result. As a reusable pattern, 그러면 + result means “then/in that case, …”. 그 is an attributive demonstrative placed before a noun. In this sentence, 그 규칙 means “the rule” or “that rule.” Korean does not mark grammatical gender on this demonstrative, and its form does not change for the noun’s number. 규칙 means “rule.” In 그 규칙을, it is the object of the remembering action. The object marker 을 follows 규칙 because 규칙 ends in a consonant. 기억하는 comes from the verb 기억하다, “to remember.” The -는 form makes the verb modify the dependent noun 데. In 기억하는 데, the phrase means “in remembering” and naturally contributes “with remembering” here. Example: 단어를 기억하는 데 시간이 걸려요. — “It takes time to remember words.” 도움 means “help” or “assistance.” With the subject marker, 도움이 되다 is a useful pattern meaning “to be helpful.” The marker is 이 because 도움 ends in a consonant. Here, 도움이 is the subject of 되다. If the noun is made the topic instead, the ordinary form is 도움은, not 도움이는. 될 거예요 is the future-prediction form of 되다, “to become” or, in 도움이 되다, “to be helpful.” The form combines 되다 with -ㄹ 거예요, which expresses an expected or predicted future event, and -요 makes it polite. In this construction, 도움이 될 거예요 naturally means “will be helpful” or “will help,” rather than literally “will become help.” Together, 기억하는 데 도움이 되다 means “to help with remembering.” 그 규칙을 identifies what is remembered, and 그러면 links this predicted helpful result to the preceding situation. Therefore, 그러면 그 규칙을 기억하는 데 도움이 될 거예요. means “That will help you remember the rule.”