Reviewing Together After Class | Learn Korean in English

Sentence explanations

1. 수업 후에 무엇을 해요?

   What do you do after class?

   수업

   class

   후에

   after

   무엇을

   what

   해요

   do

   More detail

   수업 means “class” here. It is a noun and can combine with time words: 수업 전 means “before class,” while 수업 후 means “after class.” 후에 expresses “after” in this time expression. 후 is the noun “the time after” or “after,” and 에 marks the relevant time. The reusable pattern is [event] 후에 = “after [event]”: 식사 후에 means “after a meal.” 무엇을 means “what” as the object of the action. 무엇 is the question word “what,” and 을 is the object marker used here. In everyday speech, 무엇을 is commonly shortened to 뭐를 or 뭘; these are alternatives, not corrections to the form in the sentence. For example, 무엇을 읽어요? means “What do you read?” 해요 is the polite present-style form of 하다, “to do.” The form 하다 becomes 해요 in this polite conversational style. Korean often leaves the subject unspoken when the context makes it unnecessary, so this question does not itself specify who does the action. For example, 오늘 뭐 해요? means “What are you doing today?” Together, 수업 후에 sets the time as “after class,” and 무엇을 해요? asks what action is done. Thus the whole utterance means “What do you do after class?”

2. 저는 여기 남아서 복습해요.

   I stay here and review.

   저는

   I / as for me

   여기

   here

   남아서

   stay and…

   복습해요

   review

   More detail

   저는 means “as for me, I …”. 저 is the humble first-person pronoun “I”; 는 marks the topic. The topic marker frames the speaker as the person being discussed, rather than directly marking the verb’s object. In polite speech, 저 is commonly used instead of the less humble 나. 여기 means “here,” referring to the place relevant in the utterance. A useful contrasting location word is 거기, “there” (near the listener or a previously indicated place). 남아서 comes from 남다, “to remain/stay,” plus -아서, a connective ending. Here -아서 links the staying with the next action: “stay and then/in that situation, …”. The form 남아서 does not mean that staying is a separate completed sentence; it presents it as connected to 복습해요. For example, 집에 남아서 공부해요 means “I stay at home and study.” 복습해요 comes from 복습하다, “to review,” with the polite present-style -해요 ending. 복습하다 is a verb formed with the noun 복습 (“review”) and 하다 (“do”), but the observed form is the complete verb 복습해요, not just the noun. The -해요 style is polite and can describe a current or regular action; the exact time is supplied by context. For example, 매일 복습해요 means “I review every day.” Together, 저는 여기 남아서 복습해요 means “I stay here and review.” The speaker marks themself as the topic, specifies the place as “here,” connects staying with the following action, and ends with the polite verb “review.”

3. 이 교실을 조금 더 사용해도 돼요?

   Can we use this room for a while longer?

   이

   this

   교실

   classroom

   조금 더

   a little longer

   사용해도 돼요

   is it okay to use

   More detail

   이 means “this” here. It is a demonstrative determiner placed before 교실; it does not change form for number or gender. Example: 이 책 means “this book.” 교실 means “classroom.” It is a noun and can take the object marker 을, as in 교실을 (“the classroom” as the thing being used). Example: 교실을 사용해요. means “I use the classroom.” 조금 더 combines 조금 (“a little”) with 더 (“more” or “further”). In this sentence, the combination means “a little longer” because it modifies the continued use of the classroom. Example: 조금 더 기다려요. means “I wait a little longer.” 사용해도 돼요 comes from the verb 사용하다, “to use.” The pattern -아/어도 되다 asks for or expresses permission: [verb]-아/어도 돼요? means “Is it okay to …?” The form 사용해도 is 사용하다 with this permission pattern, and 돼요 is the polite present form of 되다. Example: 여기 앉아도 돼요? means “May I sit here?” The object phrase 이 교실을 means “this classroom,” and 조금 더 says that the use will continue for a little longer. The permission pattern 사용해도 돼요? asks whether that use is allowed. The subject is omitted in Korean; the fixed translation identifies it as “we,” so the whole utterance means “Can we use this room for a while longer?”

4. 수업 후에도 여기 있어도 돼요.

   We can stay here after the lesson.

   수업

   lesson

   후에도

   even after

   여기

   here

   있어도 돼요

   may stay / may be here

   More detail

   수업 means “lesson” or “class.” It is a noun and does not change form here. A useful pattern is 수업 후 (“after class”), where 후 supplies the time relation. 후에도 is 후 (“after”) followed by the particles 에 and 도. In this sentence, 에 marks the time point, and 도 adds an “even/also” nuance: “even after the lesson.” The 도 nuance may be left untranslated when natural English simply says “after the lesson.” 여기 means “here,” referring to the place where the speakers can remain. It is a place adverb, so it does not take noun-style number or gender marking. For example, 여기 있어요 means “I am here” or “It is here,” depending on the understood subject. 있어도 돼요 is a reusable permission pattern. The base verb is 있다, “to be” or “to stay/be present.” Its form here is 있어도, made with -어도, meaning “even if/although” or, in this construction, “even being/staying is acceptable.” 돼요 is the polite form of 되다 (“to become”); in -어도 되다, it means that an action is allowed or acceptable. Thus, V-아/어도 돼요? asks “May I/we V?” and the statement V-아/어도 돼요 says “It is okay to V.” The subject is omitted in the Korean sentence. The fixed translation identifies it as “we,” so the sentence means that the speakers can stay here. Combined in order, 수업 후에도 sets the time as even after the lesson, 여기 gives the place, and 있어도 돼요 says that remaining there is permitted: “We can stay here after the lesson.”

5. 그걸 알아서 도움이 돼요.

   That is helpful to know.

   그걸

   that

   알아서

   by knowing

   도움이 돼요

   is helpful

   More detail

   그걸 is the object form of 그거 (“that”): 그거 + 를 contracts to 그걸. The particle 를 marks what is known. Here, the fixed translation supports “that” as the information being known. 알아서 comes from the verb 알다 (“to know”) plus the connective -아서: 알다 → 알아서. Here it links knowing that information with the helpful result, giving “by knowing that” or, naturally in the translation, “to know that.” The same connective can express relationships such as cause or sequence, so its English rendering depends on the surrounding meaning. In this sentence, it contributes the idea that knowing the information provides help. 도움이 돼요 uses the noun 도움 (“help”) with the subject particle 이 and 되다 (“to become; to serve as”). Literally, it says that something “becomes help,” while here it naturally means “is helpful.” 돼요 is the polite present form of 되다; it is not an inflection of 도움. Example: 이 설명이 도움이 돼요. — “This explanation is helpful.” Together, 그걸 알아서 도움이 돼요 presents knowing that information as what provides help: “That is helpful to know.” The polite ending -요 makes the statement suitable for ordinary polite conversation.

6. 그럼 여기서 같이 복습해요.

   Then let's review here together.

   그럼

   then

   여기서

   here

   같이

   together

   복습해요

   review

   More detail

   그럼 means “then” here and links this utterance to what was just established: “Then …”. It is a useful conversational form for introducing a resulting action or suggestion. A related form is 그러면, which has the same basic meaning but is more expanded. 여기서 means “here,” indicating the place where the action happens. It is commonly understood as a shortened form of 여기에서: 여기 means “here,” and -에서 marks the location of an action. For example, 여기서 기다려요 means “Let’s wait here” or, depending on context, “I wait here.” 같이 means “together,” indicating that the action is shared by the speaker and another participant in this utterance. It commonly comes before the action: 같이 가요 means “Let’s go together.” 복습해요 means “review” here. Its base form is 복습하다 (“to review”); 복습해요 is the polite 해요-style form. This form can express a present action or a suggestion depending on context. Here, the fixed translation selects the suggestion reading, “let’s review.” For example, 오늘 단어를 복습해요 can mean “Let’s review today’s words” when used as a suggestion. Together, 그럼 여기서 같이 복습해요 means “Then let’s review here together.” The sequence is: 그럼 (“then”) + 여기서 (“here, the place of the action”) + 같이 (“together”) + 복습해요 (“let’s review”). Korean leaves the subject unspoken; here, the fixed translation makes the shared “we” understood.