Unit 5 Using language课件 2021-2022学年外研版高中英语选择性必修第二册

Unit 5 A delicate world Using language Look at the sentences and answer the questions. a No visitor would think it surprising that the island is a UNESCO World Heritage Site. b Experts felt it necessary to come up with a plan to remove all the rabbits from the island. Observe the rules 1 What does “it” refer to in sentences (a) and (b)? 2 What’s the sentence element of “it”? It’s an empty object. 2 当动词不定式，动名词和从句作宾语时，为了保持句子的结构平衡，常用it作形式宾语，而将真正的宾语放到句子后部去。 Translate 他发现学好一门外语是不容易的。 He found it not easy to learn a foreign language well. 我认为我们开这个会是有必要的。 I think it necessary that we have the meeting. Grammar: It as an empty object 3 it 作为形式宾语的几种情况 1. 动词 + it + 宾语补足语 + 不定式/动名词/从句，常见于make, think, leave, find, believe 等动词。 宾语补足语：形容词、名词、过去分词等 Translate 我发现做好这件事不容易。 I find it difficult to do the job well. 我们认为抱怨是没有用的。 We think it no use complaining. 2. 动词 + it + when/if 从句，常见于appreciate, enjoy, like, prefer, love, dislike等动词之后。 Translate 如果您能帮助我们，我们会很感激。 We really app