Unit 2 Section A Grammar Focus - 4c 课件2022-2023学年人教版八年级英语下册

Section A (GF~4c) Unit 2 I’ll help to clean up the city parks. Learning objectives 1. Master the grammar of infinitives as object, adverbial and object complement. 2. Understand how to use phrasal verbs. 3. Develop the ability of knowledge analysis and build up the sense of cooperation. 1. Master the grammar of infinitives as object, adverbial and object complement. 2. Understand how to use phrasal verbs. 3. Develop the ability of knowledge analysis and build up the sense of cooperation. Learning objectives I’d like to help homeless people. She decided to try out for a volunteer after-school reading program. You could ask hospitals to let you visit the kids and cheer them up. Mario believes it can help him to get his future dream job. She volunteers there once a week to help kids learn to read. I’m making some signs to put up around the school. Grammar Focus 动词不定式结构 作宾语：主语+谓语V. + to do 作宾补：主语+谓语V.+sb.+ to 作目的状语 语法概述 动词不定式的基本形式是“to+动词原形”，常写作to do(有时to可以省略)，否定形式为not to do。 动词不定式的用法 不定式是一种非谓语动词形式，可以在句中作主语、宾语、宾语补足语、表语、定语和状语等。 动词不定式结构 常接动词不定式作宾语的动词有： 想要 拒绝 忘记 (want, refuse, forget) 需要 努力 学习 (need, try, learn) 选择 同意 帮助 (choose, agree, help) 希望 决定 开始 (hope/wish/expect, decide, begin/start) Lily wants to find a job as an English teacher in Beijing. He decided to help the homeless. 1.作宾语 动词不定式的用法 常接动词不定式作宾补的动词有： ask, tell, want, teach, wish, help, warn, invite, encourage 等可以构成“...sb. (not) to do sth.”结构的动词。 Sam asked me to help him. The teacher always tells us not to swim in the river. 2,作宾语补足语 注意： 在let, make, see, watch, hear, feel, notice, have等感官听觉动词或使役动词后面作宾语补足语的动词, 其不定式一般要省略动词不定式符号“to”。 let / make / have + sb. +do sth. e.g. Let the girl leave here now. The boy made the baby cry. see / watch / hear / notice / feel +sb.+do sth. e.g. I often hear the girl sing in the next room. 3.作状语 1）作目的状语。强调动词不定式所表示的目的时，动 词不定式可用in order to或so as to +动词原形，so as to不用于句首。 e.g. The bus stopped so as to pick up passengers. 2）作结果状