기 후에 grammar - gi hue grammar

L1.18 N 전에/후에, V기전에, V(으)ㄴ후에 grammar = before/ago, after/later

1. N 전에, V기 전에 grammar = ‘before/ago’ in English

Usage :
- This expression means ‘before a certain time’ or ‘before an action’ = before/ago
- In case of N-하다 verb, N 전에 = V-기전에 with the same meaning.

Tense:

Noun +전에:

1시간전에 = before 1 hour/ 1 hour ago

1시전에 = before 1:00 o'clock

한달전에 = before 1 month/ 1 month ago

식사전에 = 식사하기 전에 = before eating

방문전에 = 방문하기전에 = before visiting

Verb-기 + 전에:

자기 전에 = before sleeping

마시기전에 = before drinking

죽기전에 = before dead

Examples

1. 5년 전에한국에왔습니다.

I came to Korea 5 years ago

2. 식사전에이약을드세요.

Please take this medicine before meals

3. 수영하기전에준비운동을해요.

I do warm-up exercises before swimming

4. 한국에 오기전에어디에살았어요?

- 일본에서살았어요.

Where did you like before coming to Korea?

- I lived in Japan.

5. 식사하기전에손을씻어요.

I wash my hands before eating.

6. 친구의집을방문하기전에 전화를했어요.

Before visiting my friend house, I phoned my friend.

2. N 후에, V-(으)ㄴ후에 grammar = ‘after/later’ in English

Usage :
- This expression means ‘after a certain period of time’ or ‘after some action’ = after/later
- In case of N-하다 verb, N 후에 = V-한 후에 with the same meaning.

Tense:

Noun +후에:

1시간 후에 = after 1 hour/ 1 hour later

1시 후에 = after 1:00 o'clock

한 달 후에 = after 1 month/ 1 month later

식사 후에 = 식사한 후에 = after eating

방문 후에 = 방문한 후에 = after visiting

Verb-(으)ㄴ 후에:

- Verbs ending in vowel + -ㄴ후에
e.g. 
가다 -- 간후에, 
하다 -- 한후에

- Verbs ending in consonant + 은후에 
e.g. 
먹다 -- 먹은후에, 
받다 -- 받은후에

- Verbs ending in ㄹ, ㄹ is deleted and -ㄴ 후에 is added 
e.g. 
놀다 -- 논후에, 
만들다 -- 만든후에

- Some irregular verbs: 
e.g.
*듣다 -- 들은후에 = after listening
*짓다 -- 지은후에 = after building 
*돕다 -- 도운후에 = after helping

Examples:

1. 한달후에아기가태어나요.

My baby will be born one month later.

2. 밥을먹은후에이를닦아요.

I brush my teeth after meals.

3. 대학교를졸업 후에취직을했어요.

I got a job after college graduation.

4. 언제고향에돌아가요?

- 1년 후에가요.

When will you return your hometown?

- One year later.

5. 수업후에시간있어요?

- 바빠요. 수업이끝난후에다음에아르바이트를해요.

Do you have time after class?

- I am busy. After taking class, I have a part-time job.

6. 운동한후에샤워해요.

I have a shower after playing sports.