陕西省榆林育才中学高中英语 Unit 1 A land of diversity 语法导学案 新人教版选修 8学习目标：掌握名词性从句的用法学习重点：重点词汇的基本用法及阅读能力学习难点： 重点单词的拓展用法【自主学习】Step I. What is Noun Clauses?在句子中起__________作用的句子叫名词从句 (Noun Clauses）。 名词从句的功能相当于名词词组, 它在复合句中能担任________、_________、_________、_________、___________等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句1. Who will win the match is still unknown. ___________从句。I want to know what he has told you. _______________从句。The fact is that we have lost the game. _____________从句。The news that we won the game is exciting. ______________从句。StepII 名词性从句主语从句 : 一个句子在复合句中充当主语叫主语从句。 e.g. That the earth is round is true . Whether she will come or not is still a question . 注意：1.引导主语从句的连词是不能省略的。That the earth is round is trueThat-从句作主语通常用 it 作先行词，而将 that-从句置于句末，例如：It is true that the earth is round. It's a pity that you should have to leave.2.表示“是否”意义时，一般用 whether 而不用 if 引导主语从句， Whether she will come or not is still a question .但如果有形式主语 it 引导时，既可用 whether，也可用 if。 e.g. It is still a question if she will come or not .3.有时可用形式主语 it 代替主语从句：It is still a question whether she will come or not . It has not been decided yet when they will start .用 it 作形式主语的 that-从句有以下四种不同的搭配关系：a.It + be +形容词+ that-从句It is necessary that… 有必要…… It is important that…重要的是……It is obvious that… 很明显……b. It + be + -ed 分词+ that-从句It is believed that…人们相信……It is known to all that… 众所周知…… It has been decided that… 已决定……c. It + be +名词+ that...
