Basic Grammar - 기본 문법
Simple Past Tense		과거 시제
I watched an interesting movie last night.
She worked at a restaurant last summer.
Yesterday, I played computer games.
Past Progressive		과거진행형
(was/were + gerund - 동명사)
I was reading  a book when the phone rang.
We were watching TV and they were studying during the storm.
Present Perfect		현재완료
(have/has + 과거분사)
I have been to Seoul several times.
He has written many books.
A few selected verbs with past tense forms and past participles.
Original form	Past tense	Past Participle
(원형)	과거	과거분사
hit	hit	hit
read	read	read
set	set	set
buy	bought	bought
sell	sold	sold
feed	fed	fed
teach	taught	taught
hear	heard	heard
sleep	slept	slept
win	won	won
begin	began	begun
write	wrote	written
swim	swam	swum
sing	sang	sung
Wishes about the future … 미래의 소원
I wish I could live in Jejudo.
제주도에서 살수 있었으면 좋겠다.
Present - (현재 사실의 반대)
I wish I could do that.
그것을 할수 있었으면 좋을텐데 …
Past - (과거 사실의 반대)
I wish I could have done that.
그것을 할수 있었으면 좋았을 텐데.
Using Modals (auxiliary verbs), For + Noun (명사) and infinitives. (부정사)
auxiliary verbs (조동사)	adjective (형용사)
cannot (can't)	impossible	불가능한
can/may	possible	가능한
should	important	중요한
must	necessary	필요한
I can't fly.	It is impossible for me to fly.
You may borrow my pen.	It is possible for you to borrow my pen.
We should learn English.	It is important for us to learn English.
You must bring your book to class.
It is necessary for you to bring your book to class.
Using Modals (auxiliary verbs - 조동사)
modals	usage 용법
can / could	능력; 가능; 금지 (~할 수 있다)	ability, possiblity, prohibition
may / might	허가; 추측; 가능 (~ 해도 좋다)	permission, probability, possiblity
will / would	거부; 습관; 추측	refusal, habits, probability
must	필요; 의무; (해야 한다)	necessity, obligation
should	필요; 의무; (해야 한다)	necessity, obligation
Noun clauses (명사절)