UNIT 3 Section Ⅱ Grammar and usage-【金版新学案】2023-2024学年新教材高二英语选择性必修第三册同步课堂高效讲义教师用书（译林版2020）

Section Ⅱ　Grammar and usage 表语从句 [教材示例] 观察黑体部分并体会表语从句的用法 1．Learning and travelling were exactly what helped him in his later career as a historian. 2．His father’s dream was that one day he could write a great masterpiece recording what had happened in history. 3．His chief concern was whether he could do his job more effectively and efficiently. [我的发现] 1．我们可以使用名词性从句作为句子的表语。 2．当从句是陈述句时，我们可以用that引导表语从句，如句2； 当从句是一般疑问句时，我们可以用whether引导表语从句，如句3； 当从句是特殊疑问句时，我们可以用what，why，when，where特殊等疑问词引导表语从句，如句1。 一、表语从句的定义 在复合句中作表语的从句，叫作表语从句。它位于主句的系动词之后，对主语进行解释、说明，使主语的内容具体化。 At that time，it seemed as if I couldn’t think of the right word. 当时，我似乎怎么也想不出一个恰当的字眼来。 [名师点津]　可接表语从句的系动词有be，become，look，seem，sound，appear，remain等。 二、引导词及其功能 引导词 例词 句法功能 从属连词 that，whether (不能用if) 在从句中不作成分，that没有实际意义，不可省略；whether意为“是否” because 说明主语所表示的事件发生的原因，意为“因为” as if/though 从句表示的情况发生的可能性较小时常用虚拟语气 连接代词 who(ever)，whom(ever)，whose，what(ever)，which(ever)等 在从句中作主语、宾语、表语、定语等 连接副词 when，where，why，how等 在从句中作状语，表示时间、地点、原因、方式等 The trouble is that I have lost his address. 麻烦是我把他的地址丢了。 The point at issue is whether we go to the party. 争论点是我们是否去参加聚会。 He has heart disease.That is because he has been smoking too much. 他有心脏病。那是因为他抽烟太多。 It seems as if he doesn’t know the answer. 他好像不知道答案。 Actually，you can be whoever you want to be so long as you set your mind to it. 事实上，只要你下定决心，就可以成为你想成为的任何人。 The last time we had great fun was when we were visiting the Water Park. 我们最后一次开心地游玩是我们参观水上公园的时候。 三、注意事项 1．that与what引导的表语从句的区别 that 引导表语从句时，只是连接词，在从句中不作成分，也无意义 what 是连接代词，引导表语从句时，在从句中作主语、宾语、表语或定语 The trouble is that he has lost his money. 麻烦的事是他丢了钱。 That was what she did this morning on her way to school. 那就是她今天早晨在去学校的路上做过的事。 2．because与why引导的表语从句的区别 because That’s because...那是因为…… 强调原因 why That’s why...那就是为什么…… 强调结果 She often comes late.That’s because she has a baby to take care of. 她经常迟到。那是因为她有一个孩子要照顾。 She has a baby to take care of.That’s why she often comes late. 她有一个孩子要照顾。那就是她经常迟到的原因。 [名师点津]　名词reason作主语时，后面的表