Unit 2 Section A Grammar focus-4c 课件2022-2023学年人教版英语八年级下册

八下英语 Unit 2 I'll help to clean up the city parks ——动词不定式 Section A (GF~4c) 1 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 Read and underline 1. Helen and Tom hope (to help / help) the old. 2. They can ask the old (tell / to tell) them stories. 3. The old want the young volunteers (to talk / talk) to them. 4. Volunteer work can help the young volunteers (learn / learning) a lot. 一级标题：黑体， 3 动词不定式的用法 The girl could visit the sick kids in the hospital to cheer them up. 课本原句： 这个男孩可以帮助打扫城市公园。 The boy could help to clean the city park. 这个女孩可以去医院看望生病的孩子，鼓励他们。 The girl could volunteer in an after-school study program to teach kids. 这个女孩可以在一个课后学习项目当志愿者，教小孩。 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 动词不定式的构成 to do 动词不定式的用法 作主语 To have a good sleep is very important for our health. 谓语 不定式结构做主语 拥有好的睡眠对我们的健康非常重要。 作表语 My dream is to be a teacher. 系表结构 我的梦想是成为一名老师。 My duty is to look after the animals. 作表语 动词不定式作主语时，通常表示一个具体的、特定的行为，其谓语动词用单数形式。 To know oneself is difficult. 人能自知，实属不易。 动词不定式作主语时，为避免句子头重脚轻，可以用it作形式主语，不定式做主语放在句末。 It's difficult to learn a foreign langu