Unit 3 The Media

advertisers often repeat their ads. we can see or hear ads for a new product everywhere: on the radio, on tv, on the internet, in magazines and in the street. then we go shopping and we see more ads on posters in the stores! from the advertises’ point of view, the more times we see or hear the ad, the better.
（一）形容詞,副詞的雙重比較：
1. the +比較級， the +比較級
the bigger the product is, the more expensive the ad is.
the more famous the person is, the more the ad has to pay.
2. 比較級+and+比較級
our life is getting better and better.
in autumn the weather becomes colder and colder.
3. 句型互換
1）he is taller than she.
she isn’t as tall as he.
2）he is taller than any other boy in the class.
he is the tallest boy in the class.
3）mary sings better than any other  girl in her class.
mary sings the be st in her class.
注意：
①用比較級進行比較時，必須用于同一類人或事物
things are much heavier on the earth than they are on the moon.
little tom is now happier than he was two years ago.
it’s colder in winter in shanghai than it is in winter in guangzhou.
②物主代詞的用法：
her house is the same size as mine.
物主代詞是用來表示所屬關系的詞，主要有兩類：形容詞性物主代詞和名詞性物主代詞
形容詞性物主代詞只能做定語修飾名詞，不能單獨使用。
this is my/our room.
these are their /our classrooms.
名詞性物主代詞起名詞作用，可單獨使用，相當于“形容詞性物主代詞+名詞”。
this room is mine/ours.
these classrooms are theirs/ours.
  我的 你的 他（她，它）的 我們的 你們的 他們的
形容詞性物主代詞 my your his her its our your their
名詞性物主代詞 mine yours his hers its ours yours theirs
 
（二）系動詞的用法：
主 + 系動詞 + 表語
i am a teacher. (ill, tall, at school,…)
he feels tired when he wakes up.
the soup tastes delicious.
she looks beautiful.
感覺 look, seem, smell, taste, sound, feel
變化 turn, become, go, get, grow
保持 stay, keep
其它 fall
以上動詞做系動詞 + 形容詞
 
（三）重點詞匯
1. as 的用法
1）as  像……, 按照……, 像……一樣的
study as lenin studied.
i have changed it as you suggest.
the work is not as easy as you think.
2）as time goes on, he can get on well with the new classmates. （隨著時間的推移）
3）as he was not very well, i decided to go without him. （表示原因）
4）he went by as if he didn’t see me. (好像)
5）he works as an assistant in the shop. (作為)
6）yo ung as he is, he is quite experienced.       (盡管，雖然)
7）as i was coming here, i met mr. green.      (表示時間)