1. (Your sentence was correct. I think it would be better if you say) 어제 먹고 나서 운동을 했어요 어제 먹은 후에 운동을 했어요. Yesterday I ate and did excercise 2. 내일은 일을 하고 영화관에 갈 거예요 Tomorrow i'll work and go to the movie theater @ the movie theather = 영화관 3. (oh my god. is it true? lol) 커피 마시고 곰 보고 학교에 갔어요 I drank coffee, saw a bear and went to school 4. 개가 영화관 옆에서 먹고 있어요 The dog is eating next to the movie theater @ the movie theather = 영화관 5. 선생님은 당신의 뒤에 있어요 선생님은 너의 뒤에 있어 The teacher is behind you @ 선생, 너 = informal expression. You have to use 존댓말 6. 제가 이것을 해야 될까요? I wonder if i have to do this?/ Do you think i have to do this 7. 이 책을 읽을까요? (good!) Shall we read this book? 8. 한국어를 1년쯤 공부했어요 (good!) I studied korean about 1 year 9. 어제 사탕을 다섯 개 정도 먹었어요 Yesterday i ate about 5 candies @ 을,를,은,는,이,가 is very important for beginners I think :) 10. 내일은 개 두 마리정도를 볼 거예요 Tomorrow im going to see about 2 dogs (Okay, I give you some advice about this. Many people can't spell of 게요 these days even native Korean speakers! 께요 isn't right. you should use 게요 instead of 께요) 11. I did a little conversation i want to know if i use correctly 을/ㄹ 거예요/ 을/ㄹ 게요 언니: 이 책을 읽을게요 / Im going to read this book 동생: 진짜... 읽을거야? / Really... are you going to read it? - If you want to ask something, don't use 게요. - 찐자 (x) 진짜(o) 언니: 네!!! / Yes!!! 동생: 안돼!! >.< 난 읽고 싶어요!!! / Nooo!! >.< I want to read it!!! - Check out the meaning of 안돼, 아니야 언니: ㅎㅎㅎ 미안해요!^^ 그 책을 읽을 거예요! 안녕~~ / hehe im sorry^^ im going to read that book! Goodbye~~ 동생: ㅠ.ㅠ 나쁜 언니! / ㅠ.ㅠ Bad sister! 12. Last one.. 어제 너무 피곤해서 학교에 안 갔어요 (Gooood)