8上U3-Grammar

1、Unit 3 Grammar,A The comparative of adjectives,When we compare two people or things, we can use the comparative of adjectives. We form the comparative of adjectives like this,To form the comparative of adjectives, we often add _ to short adjectives and use _ with long adjectives. We often use _ afte

2、r the comparative of adjectives,Work out the rule,My book is more interesting than yours,er,more,than,A The comparative of adjectives,EX. Complete the conversation below with the comparative of the adjectives from the box,big expensive heavy light small,Salesman: Can I help you, sir? David: Yes, I n

3、eeda suitcase. Can you tell me about these two? Salesman: Sure. The red one costs￥2500, 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,lighter,big expensive heavy light small,Salesman: The black one. Its made of plastic

4、. Try them, sir. David: Youre right. The red one is _ than the balck one, and its _ than the black one. Salesman: Do you have a lot of things to carry? David: Yes, I do. Ill have the black one because its _ than the red one. Salesman: Thank you very much, sir,heavier,smaller,bigger,B The superlative

5、 of adjectives,When we compare more than two people or things, we can use the superlative of adjectives. We form the superlative of adjectives like this,To form the superlative of adjectives, we often add _ to short adjectives and use _ with long adjectives. We usually use _ in front of the superlat

6、ive of adjectives,Work out the rule,est,most,the,B The superlative of adjectives,B1 David is shopping for a camera. Look at the photos and write the letter of the correct model after each statement,3589,Made in 2010 350g 109mm78mm46mm,2530,Made in 2012 170g 99.8mm56.4mm24.5mm,1700,Made in 2011 183g

7、103mm57mm27.3mm,a,c,b,3589,Made in 2010 350g 109mm78mm46mm,2530,Made in 2012 170g 99.8mm56.4mm24.5mm,1700,Made in 2011 183g 103mm57mm27.3mm,a,c,b,David: Id like to see some of your cameras. Salesman: Certainly. This is the most expensive model. _ This is the cheapest model. _ This is the newest and

8、lightest model. _,B The superlative of adjectives,B2 David told his friend Tony about his shopping trip. Complete Davids sentences with the superlatie of the adjectives from the box,expensive light old small,Tony: Did they show you any cameras? David: Yes. The _ model is_. The _ model costs_. The _

9、model was made in _. The _ model weighs_,smallest,99.8mm56.4mm24.5mm,most expensive,3589,oldest,2010,lightest,170g,Summary,规则变化（一,单音节词和少数双音节词尾加er/est变为比较级/最高级,Summary,规则变化（二,多音节词和一些双音节在词前加more/most变为比较级/最高级,Summary,不规则变化,拓展,形容词比较级的几种用法,1. A is + adj.+er +than B .(两者） Jim is taller than Mike. 2. 比较级前

10、面可以有much,a little, a lot, even等修饰语 Jim is much taller than Mike. 3.数量+比较级+than Jim is10cm taller than Mike. 4.比较级+比较级，表示 “越来越” hotter and hotter more and more beautiful 5. the+比较级，the+比较级 表示 “越就越” The harder you work, the better you will be,1. A is the adj.+est of / in .（三者或三者以上） Jim is the tallest

11、boy in Class 3. = Jim is taller than the other boys in Class 3. = Jim is taller than any other boy in Class 3. 2. the + 序数词 + 形容词最高级 + 名词 + in/of 表示“第几最” Mike is the second tallest boy in Class 3. 3. one of + the+形容词最高级+名词复数+in/of 表示“最之一” Jim is one of the tallest boys in Class 3,拓展,形容词最高级的几种用法,Post-activity: Do a survey,Give a report,Almost every student has a _ at home. It is _ and _. Laptops are _ and _. So it is becoming _ and _ popular. With the development of technology, a