名词性从句之表语从句 课件-2023届高三英语一轮复习

表语从句 Grammar is logical ! 1.什么是表语？(详见句子结构章节讲解) 主+系+表 2.什么是表语从句？ 一个 充当 成分，为表语从句。 事实是我们已经输了这场比赛。 The fact is . 句子 表语 we have lost the game that Grammar is logical ! 1. The fact is that we have lost the game. 2. What the doctor really doubts is whether he can recover from the disease. 3. That mountain is no longer what it used to be a few years ago. 4. My trouble is who I can turn to for help. 5. That is why he didn’t come to the meeting. 6. It sounds as if it comes from upstairs. 7. He did not go to school. That’s because he was ill. Grammar is logical ! 表语从句的引导词 关联词 含义 是否作成分 可否省略 that 无实义 不作成分 不可省略 whether 是否 不作成分 不可省略 as if/ as though 似乎，好像 不作成分 不可省略 what(ever) (无论)什么 作成分 不可省略 who(ever) (无论)谁 作成分 不可省略 whom(ever) (无论)谁 作成分 不可省略 which(ever) (无论)哪一个 作成分 不可省略 whose(ver) (无论)谁的 作成分 不可省略 when(ever) (无论)什么时候 作成分 不可省略 where(ver) (无论)哪里 作成分 不可省略 why 为什么 作成分 不可省略 how 怎么样 作成分 不可省略 because 因为 作成分 不可省略 Grammar is logical ! 考点 & 难点 Grammar is logical ! 【考点一】if不能引导表语从句 解题要点：表语从句中表示“是否”用whether，不能用if。 [习题演练] 1. His first question was if Mr. Smith had arrived yet.(改错) 2. The question is _______ the enemy is marching towards us. whether whether Grammar is logical ! 【考点二】as if/as though虚拟vs现实 解题要点： 事情真实或极有可能发生，用陈述语气； 事情不真实或极少可能发生时，用虚拟语气： 1.从句表示与现在事实相反，谓语用一般过去时；（be动词用were） 2.从句表示与过去事实相反，谓语用“had+过去分词”； 3.从句表示与将来事实相反，谓语用“would/could/might+动词原形”。 [习题演练] 1. Look at the dark clouds. It looks as if it .(rain) 2. It looks as if he .(be drunk) 3.The aged man looks as if he (be) young. is going to rain were drunk were young Grammar is logical ! 【考点三】表语从句中的虚拟语气 在一些表示“建议、劝说、命令”的名词后面的表语从句中，谓语动词用虚拟语气,即should+动词原形，should可以省略。 解题要点：记住这些常见的名词，如advice、suggestion、order、command、proposal等。 [习题演练] 1.My suggestion was that we started early.（改错） 2.My advice is that she goes to school as soon as possible.（改错） start go Gram