Unit 4 Earthquakes & Natural Disasters 5大核心句突破 课件 -2027届高三英语人教版（2019）必修第一册

该高中英语高考复习课件聚焦必修一Unit4“Earthquakes & Natural Disasters”核心句式，覆盖高考语法填空、翻译及微写作考查要求，依据高考评价体系梳理too...to...（主动表被动）、as if虚拟语气（时态辨析）等5大高频考点，通过真题题型归纳（如语法填空占比45%、翻译占30%），构建完整备考体系。 课件亮点在于“结构拆解+对比训练+语篇综合”策略，如对比as if虚拟语气与过去/现在事实相反的时态差异（与过去相反用had done，与现在相反用were），培养思维品质；结合2023年高考语法填空中类似“现在分词作结果状语”真题实例，强化语言能力。设“易错警示”（如主语+be+adj.+to do中不定式逻辑宾语判断），助力学生掌握答题技巧，教师可据此精准突破考点，提升复习效率。

人教版必修一 Unit 4 Earthquakes & Natural Disasters 核心句式复习课（一轮高考复习） 1.语言能力：能够准确识别并运用5个核心句式，完成翻译、语法填空和微写作。 2.学习能力：通过归纳句式结构、对比易混知识点、完成小测，形成自主整理语法知识的能力。 3.思维品质：能够辨析不同句式的结构差异，判断语境中应使用的句式，提升逻辑归类能力。 4.文化意识：理解英语中表达程度限制、虚拟假设、主被动关系、因果关系、突发动作等概念的语言习惯，增强跨文化表达意识。 教学目标 1.too... to...：太……以至于不能…… 2.as if 虚拟语气：仿佛……似的 3.主语 + be + adj. + to do：做某事是……的（主动表被动） 4.现在分词短语作结果状语：主句 + , doing... 5.be doing... when...：正在做……这时突然…… 本节课复习的5个核心句式 文化意识：英语用简洁的不定式结构表达“太……而不能”，比so...that...更精炼。 句式一：too... to... 课文原句：Chickens and even pigs were too nervous to eat, and dogs refused to go inside buildings. 结构：too + 形容词/副词 + to do 意义：太……以至于不能…… 考点：不定式主动形式表被动含义 同义句转换：so... that...（否定句） 1.洪水太深，救不了。【提示词：flood，deep，rescue】 2.他太震惊了，说不出话。【提示词：shocked，speak】 3.灾害太大，无法结束【提示词：disaster，big，come to an end】 句式一：翻译练习 The flood is too deep to rescue. He is too shocked to speak. The disaster is too big to come to an end. 1.The earthquake was too strong __________ (stand). 2.The shelter was too small __________ (hold) us. 3.He was too tired __________ (give) aid. 句式一：语法填空 解析：too...to...固定结构，不定式主动表被动，逻辑宾语即句子主语。 to stand to hold to give 句式二：翻译练习 1.城市成废墟了，仿佛一切都结束了。【提示词：in ruins，as if，come to an end】 2.他谈海浪时，仿佛他见过。【提示词：wave，as if，see】 3.他敲管道，仿佛他的命靠此。【提示词：tap，pipe，as if，depend】 The city was in ruins, as if everything had come to an end. He talked about the wave as if he had seen it. He tapped the pipe as if his life depended on it. 句式二：语法填空 1.He looked as if he __________ (see) a disaster. 2.She cried as if her heart __________ (break). had seen与过去事实相反，用过去完成时。 were breaking与当下事实相反，be动词用were。 文化意识：英语用主动的不定式表达被动含义，使句子更简洁自然。 句式三：主语 + be + adj. + to do 课文原句：Water, food, and electricity were hard to get. 结构：主语 + be + 形容词 + 不定式 意义：做某事是……的 考点：不定式主动形式表被动意义，句子主语是不定式的逻辑宾语 1.救援物资很难运到。【提示词：aid，hard，deliver】 2.裂缝很危险，走不了。【提示词：crack，dangerous，walk】 3.他的努力很难忘。【提示词：effort，hard，forget】 句式三：翻译练习 The aid is hard to deliver. The crack is dangerous to walk on. His effort is hard to forget. 句式三：语法填空 1.The shelter was comfortable __________ (stay) in. 2.The ruins are dangerous __________ (enter). to stay to enter 解析：不定式主动形式表被动，shelter是stay in的逻辑宾语，ruins是enter的逻辑宾语。 文化意识：英语用分词结构将动作与结果紧密连接，逻辑清晰。 句式四：现在分词短语作结果状语 课文原句：The earthquake caused a tsunami that crashed into coastlines, killing more than 6,500 people. 结构：主句 + , doing... 意义：从而……，造成了……（直接、自然的结果） 考点：现在分词短语作结果状语，主句动作直接导致该结果 句式四：翻译练习 1.干旱毁了庄稼，困住了农民。【提示词：drought，destroy crops，trap】 2.山体滑坡毁了路，切断了供应。【提示词：slide，destroy the road，cut off，supply】 3.一场碰撞引发火灾，伤了十人。【提示词：crash，cause a fire，injure，at least】 The drought destroyed crops, trapping farmers. The landslide destroyed the road, cutting off supplies. A crash caused a fire, injuring at least ten people. 句式四：语法填空 1.The wave struck the coast, __________ (sweep) away houses. 2.The gas ran out, __________ (force) us to leave. sweeping forcing 解析：现在分词短语作结果状语，表示主句动作带来的自然结果。 文化意识：英语用when连接两个同时发生的动作，突出突然性。 句式五：be doing... when... 课文原句：I was having breakfast with my three children when water started filling my home. 结构：was/were doing + when + 一般过去时 意义：正在做……这时突然…… 考点：when为并列连词，表突发动作；一动作正在进行，另一动作突然插入 1.我们在户外睡，这时余震来袭。 【提示词：in the open air，sleep，when，aftershock，strike】 2.他在吹口哨，这时管子裂了。 【提示词：whistle，when，pipe，crack】 3.他们在搭避难所，这时雨来了。 【提示词：put up shelters，when，rain，come】 句式五：翻译练习 We were sleeping in the open air when an aftershock struck. He was whistling when the pipe cracked. They were putting up shelters when the rain came. 1.I __________ (stay) calm when I heard the crack. 2.They __________ (sweep) the floor when the emergency happened. 句式五语法填空 was staying were sweeping After the earthquake, the city lay in ruins. The damage was too serious __________ (describe). It seemed as if the world __________ (be) coming to an end. Water and food were hard __________ (get). The disaster destroyed many buildings, __________ (leave) thousands homeless. I __________ (sleep) when the aftershock struck. 综合检测·语篇填空 答案： 1.to describe 2. were 3. to get 4. leaving 5. was sleeping 核心句式回顾 1.too... to...：太……以至于不能……（主动表被动） 2.as if 虚拟语气：仿佛……似的（与过去相反→had done；与现在相反→were） 3.主语 + be + adj. + to do：做某事是……的（主动表被动） 4.现在分词作结果状语：主句 + , doing...（自然结果） 5.be doing... when...：正在做……这时突然……（并列连词when） 课堂小结 每个句式造一个句子，围绕 Unit 4 Earthquakes & Natural Disasters的主题 课后作业 $