Unit 5 A Delicate World Grammar 课件- 2023-2024学年高二英语外研版（2019）选择性必修第二册

Unit 5 Using language - Grammar A delicate world 1 No visitor would think it surprising that b. No visitor would think that the island being a UNESCO World Heritage Site is surprising. Experts felt it necessary Experts felt to come up with a plan to remove all the rabbits from the island was necessary. group 2: What does “it” refer to in sentences (a) and (c)? 2. What is the difference between the sentences in each group? the island is a UNESCO World Heritage Site. to come up with a plan to remove all the rabbits from the island. When the object of a sentence is a that-clause (b) or an infinitive (d), we sometimes use “it” as an empty object and put the real object later to keep balance. Observe and say P53 1 『 』 group 1: Now look for more sentences with this structure in the reading passage, and summarise its use in your own words. Have A L k 1. This incident made it clear that the rat, mouse and rabbit problem needed solving once and for all. 2. This intervention is a long, much-delayed ending to a sad story, but we humans owe it to the island to give it a happy ending. 1. This incident made ________ clear that the rat, mouse and rabbit problem needed solving once and for all. 2. This intervention is a long, much-delayed ending to a sad story, but we humans owe ______to the island to give it a happy ending. it it Focus on 基本概念  用法及常见情况  特殊情况 It as an empty object It作形式宾语 it作形式宾语用法及常见情况归纳 (1) I find it quite necessary to make some changes. 我觉得做些改变十分必要。 (2) 1 think it wrong doing it this way. 我认为这样做是错误的。 (3) We have made it clear that she has nothing to do with the case. 我们已经说的很清楚，她与这个案子无关。 当不定式、动名词或从句在某个句子中作宾语时，为了保持句子的结构平衡，常用it作为形式宾语，而将真正的宾语放到句子后部去。 it代表不定式 it代表动名词 it代表连接代词或副词引导的从句 it作形式宾语的几种特殊情况 1. 动词 + it + that从句，常见于take, have, put等动词之后。 I take it that he will fin