2. Yellow book p.63

3. Study-Yellowbook p. 63 17 많이 Scientists know a lot about birdsong, but there are _______ many questions. ~ 에 대하여 ~ 이 있다여전히 still

4. Study-Yellowbook p. 63 Why do birds sing _________ in early morning? 가장 많이 most 18

5. Study-Yellowbook p. 63 19 Why do some birds sing many different songs when others know only one? some~, others~ ( 어떤 ~, 다른 ~) 언제 = other birds one song

6. Study-Yellowbook p. 63 ★ 부정대명사 (indefinite pronoun) 특정하지 않은 막연한 사물이나 사람을 가리키는 대명사 1)one~, the other... : ( 둘 중 ) 하나는 ~ 이고, 다른 하나는... 이다. ex) Sally has two pets. ________ is hamster and __________ is an iguana. One the other

7. 2) one~, another..., the other- : ( 셋 중 ) 하나는 ~, 다른 하나는..., 나머지 하나는 - 이다. ex) Minsu speaks three different languages. ________ is Korean, _________ is English, and ________ is Chinese. One another the other Study-Yellowbook p. 63

8. 3) some~, others... : ( 막연한 수 중 ) ~ 하는 사람 ( 것 ) 들도 있고,... 하는 사람 ( 것 ) 들도 있다 ex) ________ people like meat and ________ like fish. 4) some~, the others... : ( 정해진 수 중 ) 어떤 사람 ( 것 ) 들은 ~ 하고, 나머지 전부는... 하다 ex) There are ten boys at the park. ______ of them are wearing caps, but ____________ aren't. Some others Some the others

9. Study-Yellowbook p. 63 20 Why do some birds sing _____ hours _______ there are no birds ___________? ~ 동안 ~ 할 때 주변에 for when around

10. Study-Yellowbook p. 63 21 When you walk in the woods, try to listen to the birds ____________ and think about these questions. ~할 때~할 때 try to 동사원형 : ~ 하기 위해 노력하다 조심스럽게 carefully 앞에서 언급된 궁금증들

11. Study-Yellowbook p. 63 * try to 동사원형 (_______________) ex) I tried to wear my new pants, but they were too small for me. * try 동사원형 ~ing (_____________) ex) I tried wearing my new pants, but they didn't look good on me. ~ 하려고 노력하다 ( 시험삼아 )~ 해보다