2020学年高中英语 Unit 4 Wildlife Protection 4.3学案（含解析）新人教版必修2

Unit 4Wildlife protection Period 3知识讲练课学习目标1.掌握下列重点单词和短语的用法:long to;certain;protect sb.from。积累相应的基础知识,提高语言运用能力,进一步帮助学生更好地理解课文。2.在全面深入理解课文的基础上,熟练运用所学重点单词、短语和句型复述课文。3.培养学生良好的学习习惯,有效地使用词典、网络等媒体资源来解决阅读中遇到的问题。通过识别、理解、推理、概括、重构、阐述六个层面全面提升语言运用能力。Step 1:Words and expressions:1.Daisy had always longed to help endangered species of wildlife.戴茜一直都渴望帮助濒危的野生动植物。【观察思考】(1)Tom longed to see her again.汤姆渴望再见到她。(2)The children are longing for the holidays.孩子们盼望放假。(3)She longed for him to ask her to dance.她希望他邀请自己跳舞。(1)long to do sth.意为(2)long for意为(3)long for sb.to do sth.意为(4)desire for/to do sth.意为(5)be eager for/to do sth.意为(6)be dying for/to do sth.意为【尝试运用】把下列句子翻译成汉语(1)Suddenly,I long to walk again in the house where I was once a child.(2)The little boy longs to see his parents as soon as possible.2.They allowed tourists to hunt only a certain number of animals if they paid the farmers.如果游客付给农民钱的话,他们允许游客来猎取一定数量的动物。【观察思考】(1)For certain reasons I will be unable to attend the meeting.因为某种原因,我不能参加这次会议。(2)He is certain to pass the examination.他一定会通过考试的。(3)I am certain of his success.我确信他会成功。(4)It is certain that he will succeed.他一定会成功。(1)certain*adj.(只作定语)*adj.,(作表语)可以以作主语,也可以以作主语,还可以用作形式主语;sure通常用作主语,不能用在以作形式主语的句子中。(2)be sure/certain of/about (3)be sure/certain that从句(4)make certain/sure of (doing)sth.(5)It is certain(sure)that从句(6)uncertain adj.【尝试运用】用certain/sure填空(1)It is that the young man has gone mad.(2)She is to do well in the examination.3.“Im protecting myself from mosquitoes,”it replied.它回答说:“我这样做,可以防止蚊虫叮咬”。【观察思考】(1)Wearing dark glasses can protect your eyes from the sun.戴墨镜可以保护眼睛不受阳光刺激。(2)May God protect you from harm.愿上帝保佑你远离伤害。(3)Physical exercise can protect you against heat disease.体育锻炼可以保护你免受心脏病的困扰。(4)The plants should be protected from the cold.这些植物应该保护以免冻坏。(1)protect.against/from ,较大的事件如天灾多用against,小事件如冷气则用from。(2)prevent/stop/keep.from doing sth.。【尝试运用】把下列句子翻译成英语。(1)保护你的皮肤免受阳光的伤害是很重要的。(2)你需要穿暖和的衣服以免着凉。Step 2SentenceThere Daisy saw an antelope looking sad.在那里,戴茜看到一只藏羚羊面带忧郁的神色。【观察思考】(1)I saw her cross the street.我看到她过马路了。(2)I saw her entering the room.我看到她正走进屋来。(3)I saw all the dishes washed.我看到所有的盘子都洗了。现在分词looking sad作see的宾语补足语。see sb.do表示看到了某个人做的整个动作,强调结果。see sb.doing表示看到某人正在做某事,强调过程。see sth done表示看到某事已经被完成。【尝试运用】翻译以下句子。(1)我看到鸟儿向南方飞去了。(2)我看到鸟儿正在向南方飞去。(3)当经理走进办公室,他看到工作都完成了。参考答案Step 11.【归纳总结】(1)渴望做某事(2)渴望得到某物(3)渴望某人去做某事(4)渴望得到某物/去做某事(5)渴望得到某物/去做某事(6)渴望得到某物/去做某事【尝试运用】1)突然,我渴望到我曾经在里面长大的房子里走一走。(2)这个小男孩渴望尽快见到他的父母。2.【归纳总结】(1)某些,一定的;确信的;人;物;it;人;it(2)对有把握(3)确信(4)核实/查明/确保某事(5)是肯定的(6)不确定的,难预料的【尝试运用】(1)certain(2)certain/sure3.【归纳总结】(1)保护不受(危害)(2)阻止做【尝试运用】(1)It is important to protect your skin from the harmful effects of the sun.(2)You need warm clothes to protect you from the cold.Step 2【尝试运