Unit3Period3.ppt

1、Period 3,Grammar,Module 2 Science and technology,Oxford English,Unit 3,Computers,Will computers make our lives better?,Revision and introduction,1,Complete the article.,The first computers were _ than cars, but now they are becoming _ and _. Computers can calculate at a _ speed than we can. Computer

2、s are not _ than human beings, but they may be able to do a _ job than us. In the past, computers were _ expensive, but now they are much _.,cheaper,cleverer,faster,smaller,bigger,more,Grammar A The comparative of adjectives,2,When we compare two people or things, we can use the comparative of adjec

3、tives.,better,better,How do we form the comparative of adjectives?,-er,more,than,The first computers were _ than cars, but now they are becoming _ and _. Computers can calculate at a _ speed than we can. Computers are not _ than human beings, but they may be able to do a _ job than us. In the past,

4、computers were _ expensive, but now they are much _.,cheaper,cleverer,faster,smaller,bigger,more,better,better,the comparative of adjectives,more expensive,lighter,Complete the conversation below and on page 40 with the comparative of the adjectives from the box.,heavier,smaller,bigger,S1: _, Canada

5、 or China? (country/big) S2: _.,Which country is bigger,Canada is bigger than China,Ask and answer questions using the following information. The first one has been done for you.,(country/big),Canada China,(city/big),(river/long),(island/large),(mountain/high),S1: _,Cananda or China? (country/big) S

6、2: _.,Which country is bigger,Canada is bigger than China,Ask and answer questions using the following information. The first one has been done for you.,The red laptop is the smallest among/of the three.,When we compare more than two people or things, we use the superlative of adjectives.,Grammar B

7、The superlative of adjectives,3,The red laptop is the smallest among/of the three, but it is _.,the most expensive,How do we form the superlative of adjectives?,-est,most,the,the superlative of adjectives,David: Id like to see some of your cameras. Salesman: Certainly. This is the most expensive mod

8、el. This is the cheapest model. This is the newest and lightest model.,a,b,c,B1 David is shopping for a camera. Look at the photos and write the letter of the correct model after each statement.,(1)_ (2)_ (3)_,Tony: Did they show you any cameras? David: Yes. The (1)_model is (2)_. The (3)_model cost

9、s (4)_. The (5)_model was made in (6)_. The (7)_model weighs (8)_.,expensive light old small,smallest,99.8 mm x 56.4 mm x 24.5 mm,most expensive,oldest,lightest,3,589,2010,170 g,B2 David told his friend Tony about his shopping trip. Complete Davids sentences with the superlative of the adjectives fr

10、om the box.,S1: Which is the biggest, the Earth, the Moon or the Sun? S2: The Sun is the biggest.,the Earth, the Moon or the Sun? (big),a bee, a butterfly or an ant? (small) iron, silver or gold? (valuable) a bear, a whale or an elephant? (heavy) a spaceship, a plane or a train? (fast),Ask and answer questions using the following information. The first one has been done for you.,H,Homework,熟记形容词的比较级和最高级的构成方式。 以下各组事物中，你最喜欢或讨厌哪一个？请运用所给的含形容词的比较级和最高级的句型陈述理由。 3. 完成综合练习册第35至37页Grammar的练习。,snake，sp