北师大版高一必修三教案：Unit 7 The Sea period5.docx

the fifth period grammar (ii)teaching goals 教学目标1. target language语言目标a. important chartcomparativesformmeaning同级比较a as+ adj+asba equals b比较级a comparative form +than ba not +as+ adj+asba is not equal to b最高级a the + super formba is super in a certain rangeb. important special forms of comparisonspecial usage of comparisonstructuresmeaningthe + comparative form, the + comparative form越，越a negative + comparative forma是最高级atwice/3 times + as + adj + asba是b的几倍atwice/3 times + comparative form + thanba比b（大、高）几倍2. ability goals 能力目标 help students master both the meaning and forms of different comparatives and enhance their understanding these usage in the context. 3. learning ability goals学能目标 learn to use different forms of comparative forms to make sentences and understand the usage in the context.teaching important points教学重点by presentation help students master different kinds of structures of comparative forms.teaching difficult points教学难点 by designing different kinds of practice help students master the use of comparatives in the context.teaching methods教学方法 discussion, activity-based learning.teaching aids教具准备multimedia.teaching procedures & ways教学过程与方式step i revision activity one: present the structure of the brochuret: first i will call some students to the front to present your structure of the brochure.let the ss come to the front and present the structure of the brochure.students works: title: underwater worldsub-titlesactivitiespolar worldsee polar creatures and icebergsocean floorsee beautiful coral and flying fishsea theatresee dolphin showsdiscovery poolchildren can touch small creaturesvirtual reality voyagesee the strangest fishactivity two: review the wordst: next please turn to page 59 and i will check your answers. the ss offer their answers and correct their errors.t: read these phrases and memorize them.phrases: attract people to the beauty of underwater world, offer discount tours, educate people, energetic people, measure the length, compare ones discovery, melt the ice, watch out the sharp coralt: last class we learnt to group the words according to a certain topic. now please look at the topic and list the words in the group.let the ss fill in the chart with the words listed in the group.sample chart:sea creaturescrab, seal, penguin, shark, coral, polar bear, starfish, whale, dolphin.step presentationactivity one: understand the meaning of comparativest: read the underlined structures and match the meaning of these usages.the ss read the structures and match the meaning with these sentences.t: we have learnt the structure of comparison of adjectives, but we need to understand the forms in real context.activity two: match the meaning with the formst: look at the chart below and get a clear understanding of the forms and meanings.let the look at the chart and get a structural understanding of comparatives.comparativesformmeaning同级比较a as+ adj+asba equals b比较级acomparative form +thanba not +as+ adj+asba is not equal to b最高级a the + super formba is super in a certain rangeactivity three: understand the special forms of comparisont: look at activity 6 and match the meaning with sentences listed above.let the ss read and match the meaning with the structures.t: we need to match the structure with the meaning to understand their usage in real context. now please look at the chart to understand the meaning of comparatives. let the ss look at the chart and get a structural understanding of these special comparatives.sample chart:special usage of comparisonstructuresmeaningthe + comparative form, the + comparative form 越，越a negative + comparative forma是最高级atwice/3 times + as + adj + asba是b的几倍atwice/3 times + comparative form + thanba比b（大、高）几倍step iii practiceactivity one: understand comparison in the contextt: look at the three sentences of adjectives and comparatives. see if you can understand the meaning of the underlined sentences. the ss read the three sentences and understand the underlined sentences in the context.exercise:1. most people believe that environment protection has nothing to do with ourselves. nothing is further from the truth. its exactly what we do that we can change the world.a. it is very true. b. it is not true. c. it is not true at all.2. now we find cars everywhere. many people rush to become drivers, though their driving skills are not good at all. therefore, for our kids, you cant be too careful on roads.a. you can be careless on roads. b. you cant be careful on roads. c. however much careful you are on roads, it is necessary and important.3. little is always better than not. this is a truth in our life. some people like to complain that they earn less than his peers. they spend much time complaining, so they will not spare effort to do better jobs. but if we change our view of life, we may find it even worse if we are spared to nothing. a. we shouldnt complain about anything. b. we should value what we have.c. if we have nothing, we shouldnt complain.key: 1-3ccbactivity two: get familiar with structuret: look at activity 7 and finish the exercise.help the ss finish the task with correct forms.t: next look at activity 8 and make sentences following the examples. use every given word twice following the example. the first time you should focus on the comparative form and the second time you had better use the exact times to compare.example:1. the motorboat is more expensive than the wooden boat.2. the motorboat is 5 times expensive than the wooden boat.sa: the motorboat is faster than the wooden boat.sb: the motorboat is 3 times faster than the wooden boat.sc: the wooden boat is smaller than the motor boat. sd: the wooden boat is 4 times smaller than the motor boat. t: you all have mastered the structure of these forms. compare the second group of pictures and make sentences following the example below. this time use these words once.example: the man with a rod is younger than the man with a fish.sa: the man with a rod is more handsome than the man with a fish.sb: the man with a rod is taller than the man with a fish.step iv consolidationactivity one: consolidationt: we have learnt the meaning and forms of comparatives. next we will learn another form of it. look at the examples below and observe in what way we can find the meaning of comparison. (activity 9)let the ss look at the examples and find the meaning of comparison using other forms of comparison.sa: i think this is to show contrast. this is also a way to show comparison.t: yes. contrast is also a way to show comparison. now please finish the task of activity nine. help the ss finish the task.activity two: guessing game