UNIT2 2.2 HEALTHY LIFESTYLE Learning About Language 教学课件【上好课】2022-2023学年高二英语同步备课系列（人教版2019选择性必修第二册）

UNIT2 HEALTHY LIFESTYLE Learning About Language 动词不定式作主语 1 今天的任务是去打扫房间。 1. is today’s task. To clean the room 2 不可在无成年人的陪同下去游泳。 2. isn’t allowed. To swim without the accompanion of adults 3 要在明天之前所有的作业没那么容易。 2. before tomorrow isn’t so easy. To finish all the homework 4 conclusion 动词不定式在句中作 动词不定式作主语，一般表示 ， ， 的动作。 区别：动名词作主语，表示的是 ， ， 的动作。 主语 将来 一次性 具体 一般 泛指 习惯性 注意 1.单个动词不定式在句中作主语，谓语动词用 2.两个或两个以上的动词不定式，若语义一致或作为一个整体时，谓语动词用 。若语义不一致，谓语动词用 。 单数 复数 在英语语法中，为了平衡句子，避免头重脚轻，会 it作形式主语 三单 5 To clean the room is today’s duty. To swim without the accompanion of adults isn’t allowed. To finish all the homework before tomorrow isn’t so easy. It is today’s duty to clean the room . It isn’t allowed to swim without the accompanion of adults . It isn’t so easy to finish all the homework before tomorrow. 6 1.It is/was +adj +for/of+to do sth for adj用来描述事务或行为的特点 of adj 用来描述人的品格或者特点 2.It is/was +名词词组+（for sb）+to do sth 3.It takes/took/will take sb+时间/钱/精力+to do sth 7 How to use the new computer remains a question. A Whether to go to camp has not been decided. B When to solve the problem seems uncertain. C conclusion 动词不定式作主语，有一定的表达需要时，可以添加疑问词 疑问词+to do 可做主语，相当于一个主语从句 8 Practice makes perfect 9 1.To live is s (change),and （perfect)is to have changed often. to be change to be perfect 生活就是要去改变，所谓的完美就是不断地发生变化。 2. is to think of everything beforehand. to be change To be wise 聪明就是事先考虑一切事情。 名言积累，厚积薄发 10 3. for the people is weightier than Moun Tai. 为人民利益而死，重于泰山。 4.It is better . 给予比接受好。 To die to give than to take 名言积累，厚积薄发 11 5. ,or not to be,that is a question. 生存还是毁灭，那是一个问题。 6. . 眼见为实。 To be To see is to believe. 名言积累，厚积薄发 12 Fill the blanks 1. (defend nation) is the responsibility of soldier 2.How (cure) this disease remians unknow for the doctors. 3.It is so considerate of you (help) me in a secret way. 4. is difficult to solve the problem. 5.It is a great honor for me (share) with you my opinion on how to improve your English. To defend nation to cure