U1 Pollution FightersPeriod ITeaching objectives:1)Reviewing and learning some more information about trees.2) Having students catch the general ideas of the whole passage and understand some new words and expressions.e.g. living things, release, oxygen, etc.Difficulties:To read through the whole passage.Teaching aids:Blackboard, computer, over-head projectTeaching proceduresWarming-up:1) Write from the memory.2) Read the comics on page 15 and let students know that we’ll talk about the biggest and oldest living things on earth ----trees.Pre-task preparations:1)Let students talk freely to see how much they know about treesand make a guess to see whose number is close to the answer. 2)Answer the questions in “ What do you know about …?”While-task procedures:1)Get students to look at the title, the subtitle, and the pictures totell who are pollution fighters.2)Let students read through the whole passage. Look at thestatements on the screen and let them to find out the facts in the passage to complete the sentences.Post-task activity:1)According to what they’ve known, let them fill in the blanks tofinish the sentences. Help students to summarize the general ideas of the passage.Assignments:Oral work: read the interview on page 17.Written work: preview the passage with the help of dictionary. Notes:Period IITeaching objectives:1)Learning the first part of the interview2)Having students review or learn the words and expressionse.g. be interested in, sip, etc.Language focus:1) Helping students pronounce new words correctly and try to memorize2) Doing some exercise to let students understand the language points.Difficulties:Use ‘noisy-noisily-noise, living-alive’ correctly to some of them. Teaching aids:Blackboard, computer, over-head projectTeaching proceduresWarming-up:Complete the statements to see how much they remember the information about trees.Pre-task preparations:Ask students the meanings of the new words. They can choose one of the answers. Then learn to read.While-task procedures:1) Review and introduce the words and expressions.2) Do some exercise to help students understand how to use the language points correctly.Post-task activity:Do some exercise by themselves.Assignments:Oral work: read the textWritten work: review the new words and expressions.Notes:默写时间太长以至于后面知识点来不及讲，减少学生做笔记时间，通过练习让学生理解知识点并且运用。

Period IIITeaching objectives:1)Learning the second part of the interview2)Having students review or learn the words and expressionse.g. release, breathe, etc.Language focus:1) Helping students pronounce new words correctly and try to memorize2) Doing some exercise to let students understand the language points.Difficulties:Read and use ‘breathe, breath’ correctly. Remember the prepostions in the phrases.Teaching aids:Blackboard, computer, over-head projectTeaching proceduresWarming-up:Read and review the new words.Pre-task preparations:Do some exercise.While-task procedures:1) Review and introduce the words and expressions.2) Do some exercise to help students understand how to use the language points correctly.Post-task activity:Do some exercise by themselves.Assignments:Oral work: read the interview., recite the new words and expressions. Written work: Do some exercise.Notes:Period IVTeaching objectives:1)Learning the third part of the interview2)Having students review or learn the words and expressionse.g. chemical, etc.Language focus:1) Helping students pronounce new words correctly and try to memorize2) Doing some exercise to let students understand the language points.Difficulties:Use ‘chemical-chemist-chemistry’ correctly to some of them. Teaching aids:Blackboard, computer, over-head projectTeaching proceduresWarming-up:Do some exercise.Pre-task preparations:Read the third part of the interview, let students guess the meanings of the new words and learn to read them correctly.While-task procedures:1) Review and introduce the words and expressions.2) Do some exercise to help students understand how to use the language points correctly.Post-task activity:Do some exercise by themselves.Assignments:Oral work: read the textWritten work: review the new words and expressions.Notes:Chapter1知识要点1 change n. 变化v. 改变2 hard adj. 硬的adv. 努力地3 less + n. / adj. (原级)4 at the end of 在….末尾5 take….from6 release…into7 keep sb. doing /adj.8 keep alive9 warn sb. （not）to do 警告某人做某事10 communicate with11 one another = each other12 replace = take the place of13 protect / prevent …from14 refer to15 put…in16 stop…for17 remove dust18 be washed away19 provide…for20 take care of = look after21 in this project22 at least at most23 in prison24 take a deep breathe25 hold one’s breath26 join in = take part in27 gas气态liquid 液态solid 固态28 in fact29 fact =truth 反义fiction30 breathe in 吸入31 pure purely32 release = let out = give off33 alive作表语living 放在名词前作定语34nature natural aritificial 人造的naturally 天然地35warn sb. of / about / against / doing sth. 36protect protection 保护37nasty horrible38join A to B39burn away 烧掉40burn down 渐渐烧完41burn sth. down 把…烧得精光42hardly = almost not43exchange A for B44main course 一顿饭的主菜45main road 城镇之间的大路46about 用于非正式on 用于正式的专题性的47be interested in = be keen on48on earth 究竟49on the earth 在地球上50nothing nobody something anything+else 51thank sb. for sth.52enough money fit enough53keep +名词/代词+形容词54do the job of 起…效果55run 运转=work operate function56certainly 确定= surely当然= of course57protect by58join together59underground 当副词时= under the ground 60think 相信=believe 不能用现进想可以用现进61 have 有没有现进62 see hear smell taste 没有现进63 gas 不同种类气体加‘es’64 whether…or 没有if….not65 come from= be from66 signals to 信号给67 only a little / few68 the present continuous tense 一般现在时69 add…to70 supply…for71 at last / first72 It’s + adj. for sb. to do srh.73 scientist science scientific74 fight fighter75 interested interesting76 absorb / take in 吸收77 hardly any 反义almost none78 exchang change79 lorry truck80 less 反义more 修饰比。