Unit+2+Wildlife+Protection+Reading+and+thinking+学案+3 高中英语人教版（2019）必修第二册.docx

B2 Unit2 Section Reading and Thinking学案3 教学重难点1.Master the usage of key words and phrases.2.Improve the students ability to identify literal and implied meaning.3.Enable the students to get insight into wildlife protection.4.The understanding of difficult sentences.Language points考点1. exist vi.存在;生存教材原句：Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.只有当我们学会和自然和谐共存,我们才不会成为野生生物和地球的威胁。(教材P16)（1）exist     .靠生活/生存（2）exist     .存在于中特别提醒exist是不及物动词,不用于被动语态和进行时态。 How long has the tradition of crosstalk existed _China?相声这一传统艺术在中国存在多久了？It was impossible for them to exist _such a small income.他们靠这么微薄的收入生存是不可能的。词汇拓展existence n.存在;生活come into existence(=begin to exist)产生;开始存在_ existence现存的,存在的There are many theories about how the universe _.关于宇宙是如何产生的有很多种理论。existing adj.现行的;现存的 （仅用于名词前）New laws will soon replace the_(exist) ones.新的法律很快会代替现存的法律。考点2. harmony n. 和谐；融洽教材原句：Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.只有当我们学会和自然和谐共存,我们才不会成为野生生物和地球的威胁。(教材P16)(1)harmony n. (人际关系的)融洽，和睦；和声；和谐，协调_ harmony with与和谐，协调_ harmony with 与不和谐We should protect wild animals from being harmed and live _ them.我们应该保护野生动物不受伤害，并与他们和谐相处。Your suggestions are not in harmony_ the aims of this project.你的建议与本项目的目标不符。(2)harmonious adj. 和谐的Only when each of us realise the importance of environment and we are in harmony with nature can we have a _(harmony) earth.只有当我们每个人都意识到环境的重要性，并且当我们与自然和谐相处时，我们才能有一个和谐的地球。考点3. This/That is why.这/那就是的原因教材原句：This is why we're hereto observe Tibetan antelopes.这就是我们来到此地的原因观察藏羚羊。(教材P16)（1） This/That is _ 这/那就是的原因（2） This/That is _ 这/那是因为 I was late for the appointment. That's _ I met an old friend on the way.我约会迟到了,那是因为我在路上碰到了一位老朋友。 This is _ decorating with plants, fruits and flowers carries special significance.这就是用植物、水果和鲜花装饰具有特殊意义的原因。 (2020全国)考点4. “only+状语(副词/介词短语)/状语从句”位于句首的倒装教材原句：Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.只有当我们学会和自然和谐共存,我们才不会成为野生生物和地球的威胁。(教材P16)用法归纳：当“only+状语(副词/介词短语)/状语从句”置于句首时,句子/主句要用    倒装,即把助动词或情态动词提到句子/主句主语的前面。完成句子：Only then _ realize that learning English well is so important.直到那时我才意识到学好英语是那么重要。Only in this way _ succeed in reducing our carbon footprint.只有用这种方法,我们才能成功地减少我们的碳足迹。Only when a child grows up _ understand his parents' intentions.只有当孩子长大了,他才能理解父母的意图。特别提醒“only+名词/代词”作主语时,句子不倒装。Only she can finish the work in an hour.只有她能在一小时内完成这项工作。2 学科网（北京）股份有限公司