Unit5 Revealing nature-Using Language 课件-2022-2023学年高中英语外研版（2019）选择性必修第一册

新外研社高中英语选择性必修一Unit 5 Revealing nature Using Language Grammar 2 1 It was a young man who had left medical school without completing his degree. 2 What’s more, he had recently received a letter from his father. 3 After Darwin had spent some time in South America, his room on the ship was crowded with samples of the plants and animals he had collected. 4 At that time, people believed that all species had appeared on Earth at the same time and had not changed since. 5 Darwin suspected that the finches had evolved from a common ancestor, ... 6 Many people refused to believe that living things, including humans, had evolved from lower forms of life. Past perfect 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? 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. In sentence (a), “evolved from a common ancestor” happened first. In sentence (b), “evolved from lower forms of life” happened first. It indicates the action happened before a certain past action. Using language 4 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. In each sentence, both the two actions happened in the past, Action B happened first, Action A happened later. In this situation, past perfect is used to describe Action B and simple past is used to describe Action A. Summary Action A Action B Using language Activity 1. Look at the sentences from the reading passage and answer the questions. 5 Now look for more sentences with the past pe