牛津深圳版（广州沈阳通用）八年级英语下册Module 1 Unit 1 Helping those in need grammar---动词不定式的用法 教学课件 (共32张PPT)

授课人：Angel 非谓语动词 非谓语动词：就是不能用作 谓语的动词。 动词不定式 to do / To be an English teacher is my dream 动名词 V_ing / Listening to the radio can help me learn English 包括 动名词做主语，谓语动词用单数 Collecting stamps is my favourite hobby. Reading aloud can help me improve English help sb do sth/ help sb to do sth / help sb with sth help me to learn English/ help me learn English / help me with English 一.动词不定式 2、动词不定式的常见用法 A、不定式作 主语 当不定式作主语时，习惯上用作it形式主语，而将动词不定式后置，构成固定句型。 It’s +adj +（for sb）+to do sth. （1）To learn English well is not easy. （2）To protect our environment is very important （1）It’s not easy to learn English well. （2）It’s important to protect our environment. 肯定式： to +动词原形 1、构成 否定式： not to +动词原形 B、不定式作宾语 常见的只能跟to不定式的动词及短语。 想要want wish 希望 hope希望 决定decide 学会learn 想要would like 迫不及待can’t wait 准备get ready （1）I hope to be a doctor. （2）She can’t afford to buy a camera. 计划plan 负担不起can’t afford Wang Tao hopes to be a scientist in the future and wishes to