Unit 5 Revealing Nature Using language: Past perfect第2课时学历案 2023-2024学年高二英语外研版（2019）选择性必修第一册

枣庄三中实验高中校区高二年级上学期英语学历案 编写教师：枣庄市实验高中英语统筹组长周敏 使用日期：2023.9 选必一 Unit 5 Revealing Nature （第2课时） Using language: Past perfect 自主学习【学】 【课标要求】 1. 本单元的主题语境是“人与自然”，涉及的主题语境内容是认识与探索自然。 2. 语法部分的主要内容是过去完成时。 3. 本版块帮助学生深度聚焦语言的意义和功能，在真实的语境下进行思考和运用。 【学习目标】 1. 理解过去完成时的用法，并在真实语境中运用。 2. 学习并运用生物多样性、自然界相关的词汇和表达。 【自学评价】 · 重点词组 1. 2. do research on … _____________ 3. food shortages _____________ 4. be blamed on _____________ 5. compete for _____________ 师生研学【研】 【学习过程】 Step1 Language perception Look at the sentences from the reading passage and answer the questions. (P53) a. Darwin suspected that the finches had evolved from a common ancestor, … b. Many people refused to believe that living things, including humans, had evolved from lower forms of life. 1. In sentence (a), which action happened first, “suspected” or “evolved from a common ancestor”? 2.In sentence (b), which action happened first, “refused to believe” or “evolved from lower forms of life”? 3. What does the structure had done indicate? Step2 Thinking Look for more sentences with the past perfect tense in the reading passage, and summarize its use in your own words. Step3 Learning 过去完成时的基本用法： 1) 表示在过去的某一时间或某一动作之前完成的动作或存在的状态，即“过去的过去”。 a.我们到达火车站之前，火车就已经离开了。 Before we got to the train station, the train had already left. b.我还没来得及说谢谢，他就跑开了。 Before I could say “thank you”, he had run away. 2) 表示从过去某一时间开始，一直延续到过去的另一个时间的动作，常用的时间状语有 by then, by the end of, by the time。 a.到上学期期末为止，我们已经学习了2000个英语单词了。 By the end of last term, we had learnt 2000 English words. b.到那时为止，他们已经在那里住了十年了。 They had lived there for ten years by then. 3) 表示愿望、打算等的动词，如 hope, want, expect, think, mean, suppose, intend, plan 等后接从句时，一般用过去完成时表示本打算实现而未实现的愿望和计划。 a.我本打算去机场接他，但是我有个重要的会议要参加。 I had intended to meet him at the airport, but I had an important meeting to attend. b.我原希望今年去度假，可是我离不开。 I had hoped to take a holiday this year but I was not able to get away. 4) 在句型 hardly... when 和 n