,Unit3 Computers,Grammar,The comparative of adjective 形容词比较级,Form the comparative of adjective 比较级的形式,My brother is taller than me .,This one is cheaper than that one.,This film is more interesting than that one.,Work out the rule,To form the comparative of adjectives , we often add _to short adjectives and use _with long adjectives We often use _after the comparative of adjectives.,er,more,than,Complete the conversation below and on page 40 with the comparative of adjectives. Salesman: Can I help you, sir? David: Yes, I need a suitcase . Can you tell me about these two? Salesman: Sure. The red one costs ￥2,500, and its made of leather. David: I see. The red one is _than the black one. What about the weight? Which one is _?,more expensive,heavier,Salesman: The black one. It is made of plastic(塑料）. Try them, sir. David: You are right. The red one is _ than the black one, and its _ than the black one. Salesman: Do you have a lot of things to carry? David: Yes, I do. I will have the black one because its _than the red one. Salesman: Thank you very much, sir.,more expensive,lighter,bigger,形容词比较级的变化的规则：,（一）单音节词 ，双音节词的比较级 一般在词尾加er ； 以字母e 结尾，加r ； 以一个元音字母和一个辅音字母结尾，应双写末尾的辅音字母，再加er ； 以“辅音字母+y”结尾，先把y变i，再加er 。 （5）以ly 结尾 构成形容词词缀 如： friendly-more friendly,（6）分词形容词前加more 如： boring interesting bored interested （7）以形容词后缀结尾的形容词前加more carful-more careful （8）特殊变化 well/ good -better many/much-more （二）多音节词的比较级 前加more more careful more beautiful,写出下列形容词或副词的比较级 old_ young_ tall_ long_ short_ strong_ big_ small_ fat_ thin_ heavy_ light_,older,younger,taller,longer,shorter,stronger,bigger,smaller,fatter,thinner,heavier,lighter,nice_ good_ beautiful_ low_ high_ boring_ difficult_ late_ many_ much_,nicer,better,more beautiful,lower,higher,more boring,more difficult,later,more,more,The superlative of adjectives,When we compare more than two people or two things , we use the superlative of adjectives.,The red laptop is the smallest among the three,We form the superlatives like this:,Work out the rule,To form the superlative of adjectives, we often add_ to the short adjectives and use _with long adjectives. We usually use _in front of the superlative of adjetives.,est,most,the,形容词最高级的变化的规则：,（一）单音节词 ，双音节词的比较级 一般在词尾加est ； 以字母e 结尾，加st ； 以一个元音字母和一个辅音字母结尾，应双写末尾的辅音字母，再加est ； 以“辅音字母+y”结尾，先把y变i，再加est 。 （5）以ly 结尾 构成形容词词缀 如： friendly-most friendly,（6）分词形容词前加most 如： boring interesting bored interested （7）以形容词后缀结尾的形容词前加most carful-most careful （8）特殊变化 well/ good -best many/much-mot （二）多音节词的比较级 前加most the most difficult the most carful,记住别忘了在最高级前加the 哦,Read and compare :,young long full short small old fine,younger youngest,longer longest,fuller fullest,shorter shortest,smaller smallest,older oldest,finer finest,记住别忘了在最高级前加the 哦,easy hungry early heavy big red,easier easiest,hungrier hungriest,heavier heaviest,bigger biggest,redder reddest,earlier earliest,Read and compare :,B1. David is shopping for a camera. Look at the photos and write the letter of the correct model after each statement.,David told his friend Tony about his shopping trip. Complete Davids sentences with the superlative of the adjective from the box. expensive light old small Tony: Did they show you any cameras? David: Yes. (1)The smallest model is (2)99.8X56.4mm X24.5mm.,The (3)_model costs(4)_ The (5)_model was made in (6)_ The (7)_model weighs(8) _,most expensive,￥ 3589,lightest,170g,oldest,2010,Lets do more exercise,根据句意填入单词的正确形式： 1. My brother is two years _(old)than me. 2. Which is _(heavy),the elephant or the pig? 3. Is your sister _(young) than you? Yes, she is. 4. Who is _(thin),you or Helen? Helen is. 5. Whose （谁的）pencil-box is _(big),yours or hers? Hers is.,older,heavier,younger,thinner,bigger,I think English is _than maths. A. important B.more important C. most important D. importanter 2.Mother gets up in my family. early B. earlier C. earliest D. the earlier 3. The next morning Jenny got up even . early B. earlier C. earliest D. the earliest,Thank you !,