Unit 2 Wildlife protection Reading and thinking 句型讲解课件-2026-2027学年高中英语人教版必修第二册

该高中英语课件聚焦Unit 2核心句型，系统讲解this is why...表语从句、现在分词作状语、only+状语倒装及when it comes to...结构，通过“句式分析+思考问题”导入，如对比because与why引导表语从句差异，搭建从语法理解到应用的学习支架。 其亮点在于以问题驱动深化思维品质，如分析现在分词作状语时探究“为何用watching”，结合主动关系与从句转换实例。通过语法填空和句子翻译练习提升语言能力，如翻译题要求用所学句式表达，助力教师高效教学，学生掌握科学方法，培养学习能力。

Unit 2 句型讲解 句型分析 1. This is why we're here—to observe Tibetan antelopes. 【句式分析】 this is why...意为______________________________，why此处引导_________从句。to observe为不定式作_________语。 【对比】 1) We’re here. This is because we want to observe Tibetan antelopes. 此处because引导________从句。 2) This is the reason why we’re here. 此处why引导_________从句。 这就是为什么....... 表语 目的状 表语 定语 2. Watching them move slowly across the green grass, I'm struck by their beauty. 【句式分析】 思考：此处watch为何用watching？   watching为现在分词作_________语，与逻辑主语I为________（主动/被动）关系，相当于__________引导的___________从句。如： Hearing the good news, they all jumped with joy. =When they heard the good news, they all jumped with joy. 时间状 主动 when 时间状语 Working hard, you’ll realize your goal. If you work hard, you’ll realize your goal. Trying again, he still fails. Although he tries again, he still fails. 3. Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet. 【句式分析】 思考：此句为何将“can”提到 “we” 前面？ 此句使用了__________结构，条件是：________________________________; 此外以下2种情况也一样：__________________________________________ 1) Only in this way can you learn more about our hometown. 2) Only then did I realize the true meaning of kindness. 部分倒装 “only +状语(状从)”放句首 “only +状语(介词短语/副词then)”放句首 By taking part in various activities, you will finally dicover what you love. Only by taking part in various activities will you finally dicover what you love. 4. When it comes to wildlife protection, all species—the good, the bad, and the ugly—should be treated equally. 【句式分析】 when it comes to ...意为_______________________，when 引导____________从句。   翻译： When it comes to friendship, honesty and trust are two important qualities. When it comes to education, family support is crucial. 当谈论到...... 时间状语 二、语法填空 1. _________ (walk) in the forest, I heard a strange sound. 2. __________ (see) the mountain in a near distance, he was amazed by its beauty. 3. __________(see) in a near distance, the mountain amazed him with its beauty. 4. __________ it comes to learning a new language, consistency is key. 5. I've been practicing English every day. This is _______I can communicate with foreigners fluently. 6. The reason_______I can communicate with foreigners fluently is ______ I've been practicing English every day. Walking Seeing Seen When why why that 三、句子翻译——请使用上述句式结构表达下列句子 1. 野生动物的数量以惊人的速度在减少。这就是为什么我们要采取措施保护野生动物的原因。     2. 看到这只小生物开心地向我摇尾巴(wag its tail), 我感受到了我们之间的强烈联系。       3. 只有当你了解到它们的故事，你才会真正明白每个物种都是自然的重要组成部分。 4.当谈到动物在我们生活中的角色时，它们常常既是朋友，也是帮手。 The number of wild animals is decreasing at an alarming rate. This is why we should take measures to protect them. Seeing this little creature wagging its tail toward me, I felt a strong connection between us. Only when you learn about their stories can you truly understand every species is an important part of nature. When it comes to the role animals play in our life, they are often our friends as well as our helping hands. Thank You $