Unit 4 Section B单元知识点讲解2022-2023学年人教版英语七年级下册

Unit 4 Don’t eat in class. Section B 教材知识全解 讲透知识 查漏补缺 知识点一 practice的用法和搭配······· 教材原文practice the guitar 练习吉他 practice 在此处作动词,意为“练习”.其后若跟动词,要用动名词.practice doing sth.意为“练习做某事”. I have to practice playing the piano every day.我每天不得不练习弹钢琴. 拓展practice 作不可数名词,意为“练习”. You still need a lot of practice.你还需要大量练习. 例(2020湖南长沙南雅中学三月阶段检测)The teacher tells us to practice________ English more. A. speak B. to speak C. speaking 解析 句意:老师告诉我们要多练习说英语.practice 后要用speak的动名词形式,故答案为C. 答案 C 知识点二 before引导的时间状语从句 教材原文 I must read a book before I can watch TV.我在可以看电视之前必须读一本书. 本句是含时间状语从句的主从复合句,before是连词,意为“在······之前”,用来引导时间状语从句.如: I will call you before I leave Shanghai.我离开上海之前会给你打电话的. 拓展before的反义词是after“在······之后”,before和 after都可以用来引导时间状语从句.如: I can watch TV for a while after I finish my homework.我完成家庭作业之后可以看一会儿电视. 注意before 还有如下词性和含义: prep.在······之前 You must arrive home before 10 p.m.你必须在晚上十点之前到家. adv.以前 I have never seen him before.我以前从来没有见过他. 例(2020吉林长春东北师大附中期中)I can go out________ school nights, but I have to be back________ nine o'clock. A. at; before B. on; before C. at; after D. on; for 解析 句意:我可以在上学期间的晚上出去,但我不得不在九点之前回来.和school nights搭配的介词是on,先排除A和C两项;表示“在九点之前”要用before 和 nine o'clock搭配. 答案 B 知识点三 特殊疑问词引导的宾语从句 教材原文 I know how you feel.我了解你的感受. 本句中的how you feel是宾语从句,特殊疑问词how 就是宾语从句的引导词.注意宾语从句要用陈述句语序,即宾语从句不能是how do you feel,而是how you feel. 注意特殊疑问词(如what, how, when, where, why等)引导宾语从句时,表达的是疑问的语气.注意宾语从句要用陈述句语序. Please tell me why you like those animals.请告诉我你为什么喜欢那些动物. I want to ask him where he is from.我想问他来自哪里. 例(2020重庆中考B卷)-Dear friends, do you know________? -By working together! A. when we can make the Chinese Dream come true B. when can we make the Chinese Dream come true C. how we can make the Chinese Dream come true D. how can we make the Chinese Dream come true 解析 本题考查宾语从句的用法.宾语从句要用陈述句语序,先排除B和D;根据答语“通过共同努力的方式！”可推断,问句的含义是“亲爱的朋友们,你们知道我们怎样可以实现中国梦吗?”,宾语从句的引导词要用how,故答案为C. 答案 C 知识点四 strict的用法和搭配 教材原文Parents and schools are sometimes strict, but remember, they make rules to help