Unit 4 Breaking Boundaries Using language 课件-2024-2025学年高中英语外研版（2019）选择性必修第二册

Unit 4 Using Language What have we learnt about it? 1. I dropped my watch and it broke. 2. There is a knock on the door. It must be the postman. 3. What’s this? It’s a new machine. 4. It is Friday today. 5. It was very cold last Monday. 6. It lies in the south of Anhui. 7. It is about 8:30 now. 8. It is about 25km from my city to the capital. 9. It is 39 degree! You got a high fever! sth: refer to my watch somebody pronoun date weather place time distance temperature Lead-in Look at the sentences from the interview and answer the questions. What does “it” refer to in sentences (a) and (c)? “It” refers to “not to take any chances” in sentence (a). “It” refers to “to remember that Ebola doesn’t respect national boundaries” in sentence (c). What is the difference between the sentences in each group? Why does the author choose to use sentences (a) and (c) instead of (b) and (d)? The first sentences in each group use “it” as an empty subject at the beginning of the sentences. 3 It as an empty subject—it 作形式主语 当主语部分相对于谓语部分而言太长时,常把主语部分移到句尾,在主语的位置放上it。 it 没有具体的意义,仅用于使句子显得平稳,不头重脚轻。 it 作形式主语时常代替三种语法结构:不定式(短语)、v-ing(短语) 和从句。 4 1. it 代替不定式(短语)作形式主语 it 代替不定式(短语)作形式主语的常见句型: It+be +形容词 +(for/of sb.)to do sth It + be + 名词 + to do sth. It takes sb.some time to do sth. It’s up to sb. to do sth. 做某事取决于某人 It is everyone's duty to obey the law. It took me 2 hours to finish the task. It is up to us to help those in need. 辨析: It +be+形容词 +for sb. to do sth与It+be+形容词 +of sb. to do sth 如果形容词描述的是人的品质、品格,介词用 of; 如果形容词描述不定式所表示动作的特征,介词用for。 It’s important for us to learn English well. It’s kind of you to help me. 2. it 代替 v-ing (短语) 作形式主语 it代替动词-ing形式(短语)作形式主语的常见句型: It+be+no use/no good/useless/a waste of time/...+ doing sth. It is no use arguing about the matter with him. 和他争论这件事是没有用的。 It is a waste of time trying to persuade such a person to join us. 试图说服这样的人加入我们真是浪费时间。 it所代替的从句可用that引导,也可用whether/if、连接代词或连接副词引导。 (1)It+be+a pity/a shame/a fact/an honour/no wonder/a wonder/...that... (2)It+be+形容词(strange/natural/important/surprising/obvious/ true/fortunate/possible/impossible/likely/unlikely/clear/certain/...)+that... (3)It+不及物动词(happened/turned out/occured to me/appeared/...)+that... (4)It+be+过去分词(said/reported/expected/hoped/known/believed/...)+that... (5)It doesn't matter+that/what/where/whether... 3. it 代替从句 作形式主语 It's a pity that you missed the exciting football match! 你错过了那场激动人心的足球比赛,真遗憾! It is important that we should learn from each other and help each other. 我们互相学习、互相帮助很重要。 It is likely that he will ring me tonight. 他今晚可能给我打电话。 It suddenly occurred to me that I knew how to solve that problem. 我忽然想起我知道怎样解决那个问题。 It is hoped that the number of deer will greatly increase very soon. 人们希望鹿的数量将会很快增加。 [温馨提示] 在It is suggested/required/desired/ordered/proposed/...+that...的主语从句中用“(should+)动词原形”表示虚拟语气。 It is requested that he (should) give a performance at the party. 有人请求他在聚会上表演一个节目。 It is suggested that we (should) get everything ready by tonight. 有人建议我们应该在今晚之前把一切准备好。 Rewrite the underlined parts using it as an empty subject. It is no longer quite so difficult for women and minorities to get roles in American film and television. It is now a more realistic hope for minority actors to become a leading actor in Hollywood. Rewrite the underlined parts using it as an empty subject. It is more common than before for women to write and direct Hollywood films. It is seen as acceptable by film studios to cast white actors as Asian characters. Describe the city using the information provided and it as an empty subject. It is not a surprising thing for students to see different skin colors in the same class. It is possible for people to hear many different languages and dialects. It is easy for people to find products from all over the world. It is not difficult for foreigners to settle down and find a job. It is a common thing for people from different countries to work in the same company. ①It is hard _ (name) a comedy star who hasn't been on the stage here. ②It is believed _ today’s children and teenagers are consuming three times the recommended level of sugar,putting them at a higher risk of the disease. ③作为高中生,保护海洋是我们的责任。 As high school students,it's our responsibility _. ④平衡学习和工作对我来说真的很重要,我认为我应该学会自我控制。 It's really important for me _ and I think I should learn to exercise some self-control. ⑤和他争论这个问题没有用,因为他不会改变主意的。 It's no use _ for he won't change his mind. to name that to protect oceans to balance study and work arguing with him about the question I have studied English for six years.It was difficult for me 1._(remember) new words at first.I tried every means,but it was no use 2._(recite) them over and over again.It was very kind of you 3._(offer) me some suggestions.It is necessary 4._(understand) their meanings in sentences.It is no wonder 5._ your English is so good.It is requested that everyone 6._(master) proper methods of learning.7._ was a shame that I hadn't asked you for help earlier.I will spare no effort to improve my English.It 8._(hope) that I will pass the TOEFL and have a chance to study abroad.No words are strong enough to express how grateful I am to you for your generous assistance.I would be grateful if you could give me a reply soon. to remember reciting to offer to understand that (should) master It is hoped Translation 1.我们在哪里举办派对都没关系,只要大家玩得开心。 It doesn’t matter where we hold the party, as long as everyone has a good time. 2. 和他争论是浪费时间,因为他从不听劝。 It is a waste of time arguing with him because he never listens to reason. 3. 要求所有学生在工作日穿校服。 It is required that all students (should) wear school uniforms on weekdays. 4. 对于初学者来说,在短时间内掌握这项复杂的技能很难。 It is difficult for beginners to master this complex skill in a short time. Homework 1. 背课本P55-62词汇 2. 翻译句子 3. 语法练习 $$