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《We're trying to save the earth!》PPT課件5
Grammar Focus
Pay attention to the sentences.
1. We’re trying to save the earth.
2. The river used to be so clean.
3. The air is badly polluted.
4. No scientific studies have shown that shark fins are good for health.
5. We should help save the sharks.
現在進行式: Present Progressive
定義：表示說話時(瞬間)正在進行的動作, 也表示目前或現階段正在進行的動作。
結構: be (am/is/are) + v.-ing
標誌詞：Look, Listen, now, right now…
e.g. Look! The boy is crying.
Exercise
What a fine day today!
Look! What are they doing?
used to do與be used to doing
used to do sth. 表示過去常常做某事, 而現 在往往不做了, 後接動詞原形。
be used to doing sth. 表示習慣於做某事
e.g. I used to get up at six o’clock.
Joe is used to drinking a cup of coffee every morning.
Translation.
1. 她過去常常週末和朋友閒逛。
She used to hang out with friends on weekends.
2. 他習慣每天晚上睡得很晚。
He is used to staying up.
被動語態：Passive voice
定義：表示主詞是動作的承受者，即行為動作的對象的一種語態。
結構：be + 過去分詞
e.g. A new school was built last year.
Our classroom is cleaned every day.
情態動詞
1. 情態動詞本身有一定的詞義, 表示說話人的情緒、態度或語氣, 但不能單獨作謂語, 只能與其他動詞構成謂語。常見的有: can (could), may (might), must, need, shall (should), will (would)等。
2. 情態動詞無人數的變化, 後接動詞原形。否定式是在情態動詞後面加not。個別情態動詞有過去式形式, 可用來表達更加客氣、委婉的語氣。
e.g. Ken can climb up the tress like a koala.
Tracy could ride a bicycle when she was five years old.
You mustn’t play with fire. It is dangerous.
Make a list of things that people can do to help the environment and discuss your list with your partner.
use public transportation (n.交通運輸);
turn off the lights when you leave a room;
use reusable bags instead of plastic bags;
ride your bike or walk to school or work;
stop using paper napkins(餐巾紙);
recycle books and paper
Homework
Write 5 measures to protect the environment.
關鍵字：《We're trying to save the earth!》教學課件，人教版九年級下冊英文課件，九年級英文幻燈片課件下載，《We're trying to save the earth!》PPT課件下載， .ppt格式
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