2019-2020年高中英语 Unit24 The science of farming教案 北师大版必修2.doc

2019-2020年高中英语 Unit24 The science of farming教案 北师大版必修2一、教学目标与要求通过本单元教学，继续学习、巩固有关直接引语和间接引语的内容。学生应能熟练地把直接引语转换为间接引语。复习有关谈论天气的话题，能熟练的描述各种天气。通过对课文的学习，让学生了解我国历史上农业发展的情况，并能用英语进行简单描述。二、教学重点与难点1重点词汇develop；experience；knock out of；point out；turn over；go against；a-gree to do ；now and then2重要句型 1）The soil should also be turned over with a fork so that the weedswould be destroyed2）The book，which has 110 000 characters，is about both farming andgardening3语法 间接引语：1）He said that the best seed-heads should be hung up to dry2）They asked him if it was a good idea to sow wheat close together3）They asked him whenhe harvested the wheat4）He advised/told farmers to do things at the right time of year4日常交际用语 谈论天气（Talking about the weather）：1）Its a beautiful day today2）Its going to be dry and sunny for the next two days3）Whats the weather going to belike at the weekend？4）They say its going to be wet and windy三、课型（一）对话课教具 录音机，投影仪。课堂教学设计1教师通过以下步骤导入本课：向学生提出下列问题：1）Have you ever been to a farmbefore？2）When we talk about the farm，what words can you think of？可将学生给出的词语列在黑板上，借以复习相关词汇。如学生没提及天气情况，教师可用问题加以引导：Good！Youve given me a lot of words that have something to do with farm-ingWhat about the weather？Do you think that weather is important in farming？Why？2准备放对话录音。借助投影片打出以下听前提问：1）Whats the weather like for thenext two days？2）Whats the weather going to be like at the weekend？放录音一至两遍，请学生回答上述问题，教师予以必要订正。Key：1）Its going to be dry and sunny for the next two days2）Its going to be wet andwindy3再次放对话录音，学生跟读。将学生分为两人一组练习对话。数分钟后，请两、三组同学到前面表演。教师指导学生归纳在本课中有关谈论天气情况的常用语句（见日常交际用语部分），并提供新的情景，由学生编小对话。情景1：You are supposed to plant trees with your classmates tomorrowNow you aretalking about the weather reports with your classmates and discuss what to do if it rains to-morrow情景2：You and your friends are planning a trip to the country by bike this ing Sun-dayFrom the weather reports you already know that it is going to be fine in the morningand there will be a strong wind in the afternoonTalk with your friends and make a careful plan about your trip经数分钟练习后，教师可请几位同学到前面进行表演，教师予以讲评。4要求学生将该课对话以狄克为第一人称的角度，改写为一篇短文。教师可给予必要的提示。提示语：1）a farmer，living in England；2）beautiful day，working in the fields；3）talk-ing about the weather；4）decide what to do for farm work给出首句：I am a farmer，living in the west of England要求学生根据对话，参照老师所给提示及首句，编写短文。Model：I am a farmer，living in the west of EnglandI am always busy with my farm workItsa beautiful day today and Im now working in the fields with TimTim is helping me at themomentWere talking about the weather for the next two days and also for the ingweekendAnd weve decided to sow carrot seed tomorrow and pick the rest of the cabbagesbefore the weather changes当堂要求学生完成，如时间允许，可请几位同学朗读自己的短文，教师予以讲评。5布置作业1）预习第94、95课；2）完成练习册中安排的练习（二）阅读理解课（）教具 录音机，投影仪。课堂教学设计1检查生词及短语。2教师通过以下提问导入正课：Every day people need a lot of foodAnd the food main-ly es from the corn，the wheat，the rice and so onFarmers grow them year after yearand provide us with enough foodIn our country we still have a lot of people who are farm-ersAnd many farmers still work with their hands though lots of machines are used every-whereIf I ask you what you have already known about farming，maybe few of you can an-swer this question wellNow well learn something about farming in old China，3教师给出读前提问：1）What were the people in other countries doing while the farm-ers in China were developing the science of farming？2）What book did he write？What is thebook about？教师给学生数分钟，要求学生快速阅读课文。之后请同学回答上述问题。Key：1）People in other countries were trying to catch wild animals and birds and werestill collecting seeds and nuts while farmers in China were developing the science of agricul-ture2）He wrote a book called Qi Min Yao Shu and the book is about both farming and gar-dening4放课文录音，学生跟读一至两遍。教师就课文内容提问，检查学生的理解程度（可参阅练习册中所列出的问题）5教师用投影仪打出以下statements，要求学生判断其正误。并对错误的statements 进行修改。1）China was the first country in the world to study the science of farming2）The textdoes not tell us where the earliest research centre for agriculture was3）Both Yidu andGaoyang where Jia Sixie once lived and worked are in Shandong Province4）He didnt wantto work in the governmentSo he returned home and spent his time on agriculture5）He ad-vised the farmers to choose the best seed-heads，which were much bigger than others6）Af-ter the seeds were sown，they should be knocked out of the seed-heads7）He pointed out itwas important that wheat should be planted with space between the plants8）He did experi-ments to show his way was better9）The book called Qi Min Yao Shu was written overyears agoKey：1）False（China was one of the first countries in the world to study the science offarming）2）False（China was the earliest research centre for agriculture）3）True 4）False（After years of working in the government，he returned home and spent his time on a-griculture）5）False（The best seed-heads were those with the best colour）6）False（Be-fore the seeds were sown，they should be knocked out of the seed-heads）7）False（Hesaid that it was important to plant wheat close together）8）True 9）False（The book waswritten during the years 533544，that is，over 1 400 years ago）6请学生利用课文所提供的内容，挑出有关描写贾思勰研究农业的词语：1）spent his time on research into agriculture；2）collected information，studied it，didexperiments and learnt from the experiences of farmers；3）studied ways of keeping seeds；4）studied how to improve soil conditions；5）learnt how to clean rough ground before plant-ing crops学生先在小组内交流并相互启发、补充，然后请学生在班上交流。7布置作业1）复述课文；2）完成练习册中所安排的练习。阅读理解课（）教具 录音机，投影仪。课堂教学设计1通过提问温习第一部分课文内容：1）Which country was the earliest research centrefor agriculture？2）Farmers in China were developing the science of agriculture while peoplein other countries were still trying to catch wild animals and birds and were still collectingseeds and nutsWhat does it show？3）Who was Jia Sixie and where was he born？4）Whatdid he do after Jia Sixie returned home after working many years for the government？5）Canyou tell us something about his advice to the farmers？6）When did he write his book calledQi Min Yao Shu？And what is the book about？Please give an example2检查第一部分课文复述。3教师用投影仪打出以下表格，要求学生在阅读第95课的同时，利用课文中所提供的信息填写表格，介绍贾思勰在齐民要术中有关种庄稼的一些建议：Say something about Jia Sixies pieces of advice from his book“Qi Min Yao Shu”学生先在小组内交流并相互启发、补充，然后请学生在班上交流。4布置作业 1）复述课文，重点介绍贾思勰在齐民要术中有关种庄稼的建议；2）完成练习册中所安排的练习。（三）语言训练课教具 投影仪。课堂教学设计1教师检查课文复述。2教师从本单元词语中选择部分常见词语，配以例句介绍给学生。要求学生反复练习这些例句，并请同学造句，教师予以讲评订正。词语：loaf；experience；knockout of；condition；rough；point out；turn over；go a-gainst；plough；year after year例句：1）Here are four people but Ive got only three loaves of breadWhat shall I do？2）Have you had any experience in this kind of work？3）Jia Sixie told the farmers to knockthe seeds out of the seed-heads before sowing them4）She was knocked out by the sadnews5）What are conditions like in your country now？6）Look at his handsThey are roughwith work7）He pointed out that it was very foolish to do that8）The soil must be turnedover before planning9）He turned over a page or two10）He went against his motherswishes11）Farmers plough their fields in autumn or spring12）Year after year I got a letterfrom him on New Years Day3书面表达练习中文提示（用投影片打出）：1）周兰生在城市，去年去农村经历难忘；2）建议教师去农村学农；3）周兰响应，乘火车前往老家；4）设想农村生活艰苦；5）后来发现机械化程度高，农村大变样英文提示（用投影片打出）：1）experience；2）point out；3）farming；4）advise somebodyto do something ；5）conditions ；6）remove将首句给出：Zhou Lan was born in a big city七、八分钟后，请几位同学朗读自己的短文，教师予以讲评。Model：Zhou Lan was born in a big cityShe had never been to the country until last summervacationIt was a wonderful experience for herBefore the vacation，her teacher pointed out that it was important for the students tolearn something about farming，and advised them to go to the countryside for a visitSoZhou Lan took a train to her hometown-a small village in Sichuan ProvinceBefore sheleft，she had thought that the conditions there must be very bad：the road must be rough；and the farmers will do nothing but remove weeds every dayWhen she got there，she wassurprised to see that machines were used a lot in the fields and the living conditions therewere much better than she had thoughtShe stayed there for two weeks and was very muchinterested in farming4布置作业 1）预习第25单元；2）完成练习册中安排的练习。四、难句分析1He is always busy with his farm work他总是忙于他的农场工作。be busy with的意思是“忙于”。例如：Mother is always busy with her housework妈妈总是忙于家务。They pretended to be busy with preparation for the exam他们装着忙于备考的样子。busy也常用于be busy doing sth意思是“忙于做某事”。例如：They are busy making paper flowers他们忙着做纸花。Mother is always busy doing her housework妈妈总是忙于做家务。2In the following spring，the seeds should be knocked out of the seed-heads and sown到第二年春天把种子从谷穗里打出来，然后再播种。knock out of是动词短语，“从中敲出”。例如：The sudden blow knocked two teeth out of his mouth这突然的一击把两颗牙齿从他的嘴里打出来了。The diamond was knocked out of the ring when I dropped it我的戒指掉下来时，钻石被敲出来了。knock构成的短语动词还有：knock at（敲），knock against（撞击），knock down（撞倒），knock over（撞翻）等。Who is knocking aton the door？谁在敲门？The car knocked the bike over汽车把自行车撞倒了。The child knocked his head against the wall那小孩把头撞在墙上了。The cow knocked down a small tree and ate the leaves那头牛把一棵小树撞倒了，把树叶吃了。3The soil should also be turned over with a fork so that the weeds would be de-stroyed还应当用耙子翻地，以除掉杂草。1）turn over的意思是“翻转”。例如：The doctor turned him over and looked at his back医生把他翻转身来看看他的背部。When the telephone rang，he just turned over and went to sleep again电话铃响的时候，他翻了一下身，又睡着了。2）关于turn的用法小结。A不及物动词，作“转动、转身、拐弯”解。例如：The wheel turned slowly车轮慢慢地转动。B及物动词，作“转动、翻动”。例如：He turned his car to the left他把汽车向左开。C连系动词，作“变得”。例如：The leaves turn yellow in autumn树叶在秋天变黄。D构成短语。turn onoff开关（电灯，收音机）；turn into变成，译成；turn out关掉，熄灭；turn to翻动，转向4Do not plant，for example，rice year after year in the same field例如，在同一块地里，不要年复一年地种稻谷。year after year是“年复一年地”意思，表示每年重复。例如：We used to go to the mountain village for a holiday year after year我们以前年年都去那个山村度假。Year after year we have had a Christmas card from Dick我们年年都收到迪克寄来的圣诞卡。注意，还有一个词组year by year的意思是“逐年（变化）”。例如：The boy grows taller year by year这男孩长得一年比一年高了。