8A Unit 3 Grammar I1. asas的用法1.我们用“as+形容词+as”结构，表示“和一样”。如：Peter is (一样高) Jim.The book is (一样有趣) that one.来源:gkstk.ComHis bag is (一样重) hers.来源:gkstk.Com用“not as/so+形容词+as” 结构，表示“不如”或者“和不一样”如：Peter is (不如高) Jim.The book is (不如有趣)that one.来源:学优高考网gkstkHis bag is (不如重) hers.2. 我们也用“as+副词+as”结构，表示“和一样”。如：He runs (一样快) his brother.Tom jumped (一样远) Daniel last year.Jim does homework (一样认真)as Jack.用“not as/so+副词+as” 结构，表示“不如”或者“和不一样”如：He (跑的不如快) his brother.=He _than his brother =His brother _than_he. Tom (跳的不如远) Daniel last year.=Tom _than Daniel.= Daniel _ than Tom.Jim (作业做的不如认真)as Jack.= Jim _than Jack. =Jack _ than Jim.3. “not as/so+形容词/副词+as” 的结构可以和than句型进行转换，如：Peter isnt as tall as Jim=Peter is Jim.= Jim is Peter.This book isnt as interesting as that one.= This book is that one.= That book is this one.His bag isnt as heavy as hers= His bag is hers.= Her bag is his.【测评反馈】1 用所给词的适当形式填空1. The red coat is as (long)as the blue one.2. Their classroom isnt as (clean) as ours. 3. Mike does his homework as (careful) as Jack.4. Sandy cant sing as (good)as Wendy.5. Tom is sitting there _ (quiet)of all. 来源:学优高考网6. I think he did (badly) than anyone else.二选择题( ) 1. Mike always does his homework as as the exams A. good B. best C. better D. Well( ) 2.Dont just believe the advertisements. That kind of camera is it says. A. as good as B. as well as C. not as good as D. not as well as( )3. His shoes are as as . A. cheap;me B. cheap;mine C. cheaper;me D. cheaper;mine( )4. -What do you think of the trip to Qingdao?-Its trip in my life. A. the most excited B. more excited C. the most exciting D. more exciting( )5. The boy doesnt speak _ his sister，but his written work is very good Aas well as Bso good as Cmore better than Dmore worse than( )6. _ all the students in his class, Xiao Ming writes _. A. Of, most carefully B. In, the most careful C. Of, very carefully D. In, much more carefully( )7. The children are laughing _. They look very _. A. happy, happy B. happily, happily C. happily, happy D. happy, happily( ) 8.The girl doesnt run _ the boy. A. much faster as B. as fastest as C. more fast than D. as fast as( )9.The air in our hometown is _ than it was before. We should do something about it A. much better B. more worse C. more better D. much worse( )10. I think P.E. is _ any other subject. A. the more important B. the most important C. as important than D. as important as三按要求完成句子1. 你游泳没有你弟弟游得好。You cant swim your brother.2. 这个故事不如那个故事有趣。This story isnt that one.3. 今天比昨天冷得多。It is today it was yesterday.4. 他的身体状况正一天天好起来。He is getting day by day.5. Jack doesnt play badminton as well as Tom.(同义句)来源:学优高考网Tom plays badminton Jack.6. I dont think Maths is as interesting as English.= I think English Maths.