Unit 2 语言知识精讲精练 课件 2022-2023学年人教版英语八年级下册

Unit 2 I’ll help to clean up the city parks 语言知识精讲精练 Language points 1. The girl could visit the sick kids in the hospital to cheer them up. 1) could 情态动词，“能；可以”。 后接动词原形，在此用作提建议，语气比can委婉。 2) cheer up “使振奋；使高兴”。后接代词，代词要放在中间。 cheer v./n. 欢呼；喝彩 cheer on 为······加油喝彩 e.g. Most will probably be cheering on their favourite players. 多数人大概都会为自己喜欢的球员加油。 cheerful adj.快乐的；愉快的 2. The boy could give out food at the food bank. give out在此处相当于hand out，是“动词+副词”型短语。 give out 分发；散发 The teacher is giving out books to the class. Can you see the papers on the desk? Give them out to the students. 【拓展延伸】 give out 的其他含义： ① 发出（光、热等） The sun gives out light and heat to the earth. ② 耗尽；用尽；筋疲力尽；停止起作用 After two hours, her patience gave out. Dance till my legs give out. 3. The girl could volunteer in an after-school study program to teach kids . volunteer ①v. 自愿做…… volunteer to do sth. volunteer for sth. e.g. They volunteered to help the poor students. ②n. 志愿者 ；义务工作者 e.g. It's great to be a volunteer. 4. We need to come up with a plan for the City Park Clean-up Day. 我们需要为“城市公园清洁日”想出一个计划。 1）need 是一个常见的动词，表示“需要”之意。它既可以作实义动词，也可以作情态动词。其具体用法如下： need用作实义动词，有“必要”、“必需”之意，有人称、数和时态的变化，可以接名词、代词、动名词或带to 的动词不定式作宾语。 e.g. The man needs an English dictionary when he works. Do you need to see him yourself ? .need用作情态动词，意为“必须”、“必要”，没有人称、数等变化，后接不带to 的动词不定式。 通常用于疑问句和否定句中，构成疑问句和否定句时，不需要使用助动词。 e.g. Need you go to the park with your classmate? He needn’t spend much money for this new watch. 【注意】 由need引出的疑问句，答语表肯定时用must或have to；表示否定时用needn’t或don’t have to。 A: Need I come to work tomorrow? B: Yes, you must/have to. A: Need I finish the work at once?  B: No, you needn’t/don’t have to． 2）come up with 意为“想出；提出” 后面常接idea、plan、answer、solution、advice 等名词。 同义短语：think up e.g. She came up with a way to work out the math problem. come up with 还可意为“追上；赶上”，相当于catch up with。 e.g. I will come up with you soon. 5. We can’t put off making a plan. 我们不能推迟