Unit 5 Revealing nature Grammar 学案 -2023-2024学年高中英语外研版（2019）选择性必修第一册

Unit 5 Period 2 Grammar 【学习目标】 Learning Objectives 1 To know the usage of past perfect tense 2 To use past perfect tense correctly 【学习过程】 Learning activities 目标一: To know the usage of past perfect tense Activity 1: Look at the sentences from the reading passage and answer the questions. 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? Answers: Now look for more sentences with the past perfect tense in the reading passage, and summarise its uses in your own words. Activity 2: Read the following groups of sentences and summarise the usage of past perfect tense. Group 1： a.Before we got to the train station, the train had already left. b.Before I could say “thank you”, he had run away. Summary: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“_______________”。 Answer: Group 2: a.By the end of last term, we had learnt 2, 000 English words. b.They had lived there for ten years by then. Summary: 表示从过去某一时间开始，一直延续到_______________的动作，常用的时间状语有by then，by the end of，by the time Answer: Group 3: a.I had intended to meet him at the airport，but I had an important meeting to attend. b.I had hoped to take a holiday this year but I was not able to get away. Summary： 表示_______________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。 Answer： Group 4： a.Hardly had I left when it began to rain. b.No sooner had he sat down than the telephone rang. Summary： 在句型hardly...when 和 no sooner...than 中，主句用_______________，从句用一般过去时，表示“一......就......” Answer： 目标二: To use past perfect tense correctly Activity 1: Complete the paragraphs with the information from the given sentences. The senten