Unit 4 Meeting the Muse Using language - 高二英语 同步精品课堂（外研版2019选择性必修第一册）

Period 2 Using Language 1 Starting out Step 1. to infinitive as predicative Step 2. -ing form as predicative Step 3. past participle as predicative 2 Using Language 原文再现 Every artist's wish is to create something that expresses an idea. 动词不定式作表语有何功能？ 动词不定式作表语说明主语的具体内容，表示具体的或将来的动作，还可以表示目的、结果、安排、命令、决求、劝告、意愿等。 当主语是aim,duty,hope,idea,mistake,plan,purpose,suggestion等词或以这些词为中心词的名词词组时，动词不定式作表语表示主语的内容，如： My work is to clean the room every day. My chief purpose is to point out the difficulties of the matter. to create somehing 是动词不定式作表语 工作内容 目标的内容 3 Using Language 以what引导的主语从句，不定式作表语说明主语的内容，如 What I would suggest is to put off the meeting.(建议的内容) What I'd like to say is to treat the poor creature well. (说话的内容) Every artist's wish is to create something that expresses an idea.(愿望的内容) 当主语和表语都是不定式时，主语表示条件，表语表示结果，如： To be kind to the enemy is to be cruel to the people. To see is to believe.(to see为条件，to believe为结果) 主语表示条件 表语表示结果 4 Using Language 动词不定式作表语时to能否省略？ 一般情况下，不定式作表语不能省略。 我能做的就是等待。表语表示主语的内容，主语从句中含有do，所以to wait中的to省略 ★但如果前面的主语从句中含有do时，可以省略to；如： All I could do was wait. ★由and或or等连接并列的动词不定式时，第二个（和后面的）不定式可以省略to，如： My dream is to be an astronaut and explore the universe. 5 Using Language 原文再现 动词的-ing form作表语有何功能? 动词的-ing form作表语用来说明主语的内客，表示主语的某种性质或状态。当与主语是同一概念的时候，主语与表语的住置可以替换，如： 上面的例句也可以替换为： Turning to his children's toys is one way for him to find inspiration. One way for him to find inspiration is turning to his children's toys. turning to his children's toys在句中作表语，说明主语的内容。 6 Using Language -ing form作表语时句子主语常是表示无生命的事物的名词或what引导的名词性从句。-ing form与主语通常是对等的关系，表示主语的内容，主语、表语可互换位置。如果句中的主语和表语同为动词时，要注意保持两个动词在形式上的一致。如： Your task is cleaning the windows. 你的任务就是擦窗户。 (Cleaning the windows is your task.) What I hate most is being laughed at.我最痛恨的就是被别人嘲笑。 (Being laughed at is what I hate most.) The only thing that interests her is working.她唯一感兴趣的事就是工作。 (Working is the only thing that interests her.) 7 Using Language 二者通常可以互换，没有区别；如： 如果一定要区分的话，-ing form表示一般的或抽象的多次行为，to infini