Unit 1 Discovering useful Structures 学案 - 高中英语人教版（2019）选择性必修第二册.doc

高二英语导学案 主备人： 审核：高二英语组 使用时间：Unit1 Discovering Useful StructuresUnderstand the usage of Infinitive as a Predicative.Learning objective:By the end of the class, students will know the usage of infinitive as predicativePre-class：Lead inWhat do these sentences have in common?1. Perhaps the best way to understand Western art is to look at the development of Western painting over the centuries.2. During the Middle Ages, the purpose of Western art was to teach people about Christianity.3. In this work, Monet's aim was to convey the light and movement in the scene.4. What they attempted to do was no longer show reality, but instead to ask the question, “What is art?”5.These books are of great value and they are not to be sold.讨论归纳： _While-class: Step1 :Definition and functions of Infinitive动词不定式（短语）作表语 动词不定式（短语）作表语相当于名词作表语。它和主语处在同等地位，所指的或是和主语一样的东西，或是主语产生的结果。常常可以将主、表交换位置，句子的意义不变。Step2: Functions of infinitive1. Perhaps the best way to understand Western art is to look at the development of Western painting over the centuries.2. During the Middle Ages, the purpose of Western art was to teach people about Christianity.3. In this work, Monet's aim was to convey the light and movement in the scene 讨论归纳一：主语是以_ ,_ ,_ duty, suggestion,duty,hope,idea,intention,plan等为中心的名词词组时，或者以what引导的名词性分句表示，一般用动词不定式作表语说明主语的_。1. The next step is to make sure that you know exactly what is required.讨论归纳二：动词不定式在表语中表示_。1.I dont know what is to happen to us if we go on like this ?2.The best item on the program is still to come.讨论归纳三：动词不定式在表语中表示_和_。 1.You have done so much.You are to be rewarded . 2.These books are of great value and they are not to be sold.讨论归纳四： 动词不定式用于_语态,相当于_,具有情态意义。 1.Who is to blame for the fire. 2.Something is still to find out.讨论归纳五：动词不定式作表语时，可用_形式表示被动意。Step3: 动词不定式作表语to的省略1. all作主句主语，其后的定语从句中含有实义动词do的某种形式时。例：All we need to do is live each day with hope.我们要做的是带着希望过好每天。2. what引导的从句作主语，从句中含有实义动词do的某种形式时。例：What I want to do is take a holiday right away. 我想马上就去度假。3.（主句）主语被only，first，one，least或形容词最高级修饰，且其后作定语的从句或短语中含有实义动词do的某种形式时。例：In the evening the only thing he did was read the newspaper.晚上他唯一做的就是看报纸。Step4: 动词不定式（短语）作表语和v-ing（短语）作表语的区别1.动词不定式（短语）和v-ing（短语）作表语时，要注意与句子的主语在形式上保持一致，即若句子的主语为v-ing（短语），则表语也应使用v-ing（短语），若主语为动词不定式（短语），则表语也应使用动词不定式（短语）。例：To see is to believe.= Seeing is believing. 眼见为实。2.动词不定式（短语）和v-ing（短语）作表语时可换用，但以下情况除外：（1）当动词所表达的是某一特定的行为，尤其是将来的行为或有待于实现的行为时，通常用动词不定式（短语）作表语。Her best wish is to put her new ideas into practice.她最大的愿望是将自己的新想法付诸实践。（2）若动词所表达的并不强调动作，而是表示主语的内容，则通常用v-ing（短语）作表语。 My favorite sport is swimming. 我最喜欢的运动是游泳。【当堂检测】.单句语法填空1. The motto of the little boy who was suffering from a muscle disease was _ (live) one day at a time. 2. It is you, including your cousin, that _ (blame) for the loss of the golden chance. 3. Medical experts say the most effective way to prevent the spread of disease is for people _(wash) their hands with soap and water.4. The next step is _ sure that you know exactly what is required. 5. The purpose of education is _ (develop) a fine personality in children.1 The young singer's intention of performing the song was2 The best way to do business is3 What the survivors attempted to do was4The main purpose of art education in schools is5The aim of the two leaders at the conference was6 For a humble person, one of the hardest things might be7 When you are faced with a serious decision, my suggestion is8 The mother believes her duty is9 All he wanted after a tiring day was.Match the sentence halves and underline the words used as the subject. A to build trust between you and your clientB to achieve permanent peace between their two countriesC to build a memorial to the heroes who saved their livesD to share his love for rock music with his fansE to be left aloneF to criticize other peopleG to inspire students to be creativeH to listen to your own inner voiceI to raise her son to become a man with a noble mind and a generous heart第 4 页 共 4 页