Unit7重点知识讲解 2025-2026学年译林版八年级英语上册

译林英语八上Unit7重点知识讲解 一、核心单词 1. around /əˈraʊnd/ adv. 大约 prep. 环绕；在……周围 用法： 作副词时表“大约”，相当于 about。 作介词时表“环绕；在……周围”。 例句： He arrived at around five o’clock. They sat around the table to have dinner. 2. hold /həʊld/ v. 容纳；拿着；举行 用法： 过去式和过去分词均为 held。 常见短语：hold on（别挂断）；hold one’s breath（屏息）。 例句： The hall can hold 500 people. We held a party to celebrate his birthday. 3. return /rɪˈtɜːn/ v. 返回；归还 用法： 表“返回”时，相当于 go/get back，不可再与 back 连用。 表“归还”时，相当于 give back。 例句： He returned to his hometown last week. Please return the book to the library on time. 4. harm /hɑːm/ v. & n. 伤害；损害 用法： 作动词：harm sb/sth（伤害某人/某物）。 作名词：do harm to sb/sth（对某人/某物有害）。 形容词形式为 harmful（有害的），短语 be harmful to（对……有害）。 例句： Smoking harms your health. Noise pollution does harm to our hearing. 5. lead to 导致 用法： 动词短语，to 为介词，后接名词、代词或动名词。 例句： Too much pressure leads to sleep problems. All roads lead to Rome. 二、重点短语 1. get rid of 清除；摆脱 例句：We need to get rid of the old furniture. 2. quite a few 相当多；不少 例句：He has quite a few friends in this city. 3. lead to 导致 例句：Air pollution leads to many health problems. 4. set up 建立 例句：They set up a new school in the village. 5. a few 一些；少量 易混辨析： 易混词 用法及例句 a few 修饰可数名词复数，表肯定：There are a few apples on the table. few 修饰可数名词复数，表否定：There are few apples left. a little 修饰不可数名词，表肯定：There is a little milk in the glass. little 修饰不可数名词，表否定：There is little milk left. 三、核心句式 1. “It’s time for sb to do sth” 句型 句式结构：意为“到某人做某事的时间了”，同义表达为 It’s time for sth / It’s time to do sth。 例句： It’s time for us to protect the environment. It’s time for class. = It’s time to have class. 2. “one of the/one’s + 形容词最高级 + 可数名词复数” 句型 句式结构：意为“最……的……之一”，作主语时谓语动词用单数。 例句： The Amazon is one of the longest rivers in the world. This is one of the most interesting books I have ever read. 四、语法精讲 1. 简单句的五种基本句型（Ⅱ） ① 主语+谓语+间接宾语+直接宾语（S+V+IO+DO） 常见接双宾语的动词：buy, pass, lend, give, tell, teach, show 等。 例句：My father bought me a new bike. ② 主语+谓语+直接宾语+宾语补足语（S+V+DO+OC） 宾语补足语可由名词、形容词、副词、介词短语、动词不定式等充当。 例句：We keep the classroom clean. 2. 并列连词 and, but, or, so ① 用法 and：表并列或顺承，意为“和；又”。 but：表转折，意为“但是”。 or：表选择或否定条件，意为“或者；否则”。 so：表因果，意为“因此；所以”。 ② 例句 I like apples and bananas. He is tired, but he still works hard. Hurry up, or you will be late. It rained heavily, so we stayed at home. ( 1 ) 学科网（北京）股份有限公司 $