Unit 3 Section B单元知识点讲解2022-2023学年人教版英语七年级下册

Unit 3 How do you get to school? Section B 教材知识全解 讲透知识 查漏补缺 知识点一It's+ adj.+(for sb.)to do sth.的句式 教材原文 For many students, it is easy to get to school.对许多学生来说,到学校上学是很简单的. It is+adj.+(for sb.)to do sth.是固定句式,意为“(对某人来说)做某事怎么样”.这是一个动词不定式(短语)作主语的句型,但常用it作形式主语.不定式前的for sb.有时也可省略.如: It's dangerous for young children to swim in the river.对于年幼的孩子来说,在那条河里游泳是很危险的. 例(2020陕西西安科技大学附中期中)It's important________ us________ our teeth. A. for; to brush B. for; brushes C. of; to brush D. of; brushes 解析 本题考查It's+adj.+for sb.+to do sth.的句式结构.句意:对我们来说,刷牙是很重要的.根据该句的结构可知答案为A. 答案 A 知识点二 afraid的用法 教材原文 But he is not afraid because he loves school.但是他并不害怕,因为他喜欢上学. afraid 作形容词,意为“害怕的”.它属于表语形容词,在句中通常位于系动词后作表语.如: I'm afraid of spiders.我害怕蜘蛛. 搭配be afraid of sb./sth.害怕某人／物;be afraid of doing sth.害怕做某事,担心做某事;be afraid to do sth.不敢做某事 例(2020河南郑州五月阶段性学业检测)I am________ of dogs. I don't want to play with them. A. short B. full C. kind D. afraid 解析 根据题干中的“我不想和它们一起玩”可知,我“害怕”狗,be afraid of 符合题意,故所缺的词是afraid. 答案 D 知识点三because引导的原因状语从句 教材原文 But he is not afraid because he loves school.但是他并不害怕,因为他喜欢上学. 本句是含有原因状语从句的主从复合句,主句是But he is not afraid,从句是because he loves school, because是连词,意为“因为”,用来引导原因状语从句. I like listening to music because it makes me relaxed.我喜欢听音乐,因为它可以使我放松. 注意because意为“因为”,so意为“所以”,两者不能在一个句子中同时使用,但含有两者的句子可以进行同义转换. I am hungry because I can't find anything to eat.我很饿,因为我没有找到任何吃的东西. ＝I can't find anything to eat, so I am hungry.我没有找到任何吃的东西,所以我很饿. 例(2020北京十四中诊断性检测)I like my English teacher________ she is very friendly to us. A. after B. before C. because D. so 解析 设空处前意为“我喜欢我的英语老师”,设空处后意为“她对我们很友好”,根据设空处前后的因果关系可推断,所缺的词是because,故答案为C. 答案 C 知识点四come true的用法 教材原文 Can their dream come true?他们的梦想能实现吗? come true是固定搭配,意为“实现;成为现实”.它的主语通常是hope(希望)、wish(愿望)、dream(梦想)等.如: Your dream is to be a singer. I hope your dream will come true one day. 你的梦想是成为一名歌手.我希望你的梦想有一天会实现. 拓展常见的come短语有: come on加油;快点 come in 进来 come true实现;成为现实 come back回来 come over过来;顺便来访 come out出去;出版 例(2020山东临沂河东区期中)-My dream is to b