Unit 5 Into the Unknown Grammar 学案-2023-2024学年高二英语外研版（2019）选择性必修第四册

【学生版】Unit 5 Period 2 Grammar 【学习目标】 Learning Objectives 1 To review the usage of noun clauses 2 To use noun clauses correctly 【学习过程】 Learning activities 目标一: To review the usage of noun clauses Activity 1: Look at the sentences from the reading passage and answer the questions. a Although his theory has been dismissed by scholars, it shows how powerful the secrets of Ancient Maya civilisation are among people. b But the greatest mystery of all is what caused the Maya to abandon most of their great cities. c Why Maya civilisation collapsed remains a mystery. 1 Which sentence contains a clause that serves as the subject of the sentence? 2 Which sentence contains a clause that serves as the object of the sentence? 3 Which sentence contains a clause that gives further information about the subject in the sentence? 4 What do “how”, “what” and “why” in each sentence refer to? Activity 2: Now look for more sentences with noun clauses in the reading passage. _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ 目标二: To use noun clauses correctly Activity 1: Complete the passage using noun clauses with words in brackets. There are many mysteries about dinosaurs to which we long to find explanations. You may think that dinosaurs were big, green and scaly, right? In fact, it seems that they appeared very different from 1 _____________ (think). In recent years, scientists have worked out 2 _________ _________________________ (look): many of them were small with feathers. However, 3_______________ (have) feathers still isn’t clear — it might have been for communicating or for staying warm, but not just for flight. Scientists also believe that many dinosaurs had bright colours. It seems 4_______________ (depend on) their habitats. That is, dinosaurs which could fly would have had different colours to those living in the sea. Acti