Unit 2 A life's Work Using language 单元语法表语从句讲练课件-2024-2025学年高二英语外研版（2019）选择性必修第三册

表语从句 Author: Miss. Liu 选修三unit2 A life’s work 【语法导图】 概述 表语从句 含义 构成 引导词 用法 一、概述 1、含义：在句子中充当表语成分的句子称为表语从句。表语从句往往是对主句的主语进行进一步解释说明。 2、构成：句子一般结构为“主语+系动词+连接词引导的表语从句”。 3、连接词主要包括①连接代词：what, who, whom, which, whose等；②连接副词:when, where, how, why等；③that, whether, as if/though, because等。 二、用法 1、that/whether引导的表语从句 that引导表语从句时无任何意义，不作任何成分，只起连接作用，通常不能省略。whether意为“是否”，不作任何成分，起连接作用。（注意：if不能引导表语从句） Eg: What I don't care about is whether he will come to my birthday party or not. 我不在乎他是否会来参加我的生日聚会。 The focus of this discussion is that our mistakes may have led to some butterfly effects. 本次讨论的重点是我们犯的错可能导致一些蝴蝶效应。 2、连接代词引导的表语从句 连接代词what, who, whom, which, whose等引导表语从句时，在从句中作主语，宾语，表语，定语等。 Eg: ①The problem is what is really necessary for our company.（what在从句中作主语） ② The key is who is responsible for this issue.（who在从句中作主语） ③The lesson I learned from this mistake is whoever comes to our company must register at the entrance.（whoever在从句中作主语） ④The biggest challenge we face is whom this trophy should be given to. （whom在从句中作宾语） 3、连接副词引导的表语从句 连接副词when, where,why,how等引导表语从句时，除了起连接作用外，还在从句中充当成分，分别充当时间，地点，原因，方式状语。 Eg: ①The problem is how we can increase the varieties of our products.(how在从句中作方式状语） ② The most unforgotten day is when we went to his birthday party together.（when在从句中作时间状语） ③The right place is where you passed me a book yesterday.（where在从句中作地点状语） 4、as if/as though,because等引导的表语从句 as if/as though,because等引导的表语从句常用于系动词look,seem,sound,be,become等后面。because引导的表语从句常用于“This/that/it is /was because...”句型中。 Eg: ①It looks as if it is going to rain. ② It was reported that many kinds of birds were in danger.It was because their habitats were damaged . 【练习与应用】 1. 单句语法填空 ①This devotion and hard work is ____________we see reflected within his photos. ②This is ____________makes them so special. ③A simple restaurant was ____________he usually had the same meal of sausages,eggs and coffee. ④The most important result for the user is ____________the product does what is intented. ⑤The truth is ____________we are lucky enough to have clean water,but this is not the case for many people around the world. ⑥Our hope is ____________an effective cure for the desease will be found as soon as possible. what what where that that that ⑦The question is____________the star could turn up at the evening party on time. ⑧The problem is ____________can complete the difficult task within two weeks. ⑨My queation is ____________turn it is to be on duty today. ⑩The trouble is ____________is qulified to take over his duty. 二、完成句子 ①露西总是乐于助人。那就是她很受周围人欢迎的原因。 Lucy is always ready to help others._________________________________around her. ②我没有给她打电话。那是因为我生她的气了。 I didn’t phone her, and ____________________________________. whose who whose who That is why she is very popular with the people that was because I got angry with her ③听起来好像有人敲门。 It sounds ____________________________________the door. ④她积极参与各种课外活动。那就是她能够保持健康的原因。 She takes an active part in various after-school activities ,and ____________________________________. ⑤你说他不诚实。在这一点上我不同意。 You say that he is dishonest, and this is ________________________ ⑥真正让我在乎的是他们是否会在雨季之前完成这个工程。 What really concerns me is____________ they will complete this project before the rainy season. as if someone is knocking on that is why she can keep fit where I disagree whether 【注意】 表语从句前常用的系动词归纳：①be动词：am, is, are ②感官动词：feel, look, smell, sound, taste ③表似乎：seem, appera ④表变化：get, become, turn, grow, make, come, go, fall, run ⑤表保持：remain, keep, stay, continue, stand, rest Thanks for your listening $$