Unit 1 Section Ⅲ Using language—Grammar（Word教参）-【优化指导】2022-2023学年新教材高中英语选择性必修第三册（外研版2019）

Section Ⅲ　Using language—Grammar 主语从句 [对应学生用书P12] [观察] 1．...what I say is that my pictures aren't hurting anyone，so who cares? 2．So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. 3．That inner beauty is very important is true... 4．It is a well­known fact that the faces some people show to the world might be completely different to their real personalities. 5．What is certain is that comedians often use comedy to help them understand themselves and the world. 6．The earth became so violent that it was not clear whether/if the shape would last or not. 7．How others are feeling is not something that we should make assumptions about，because it's not always obvious who is truly happy. [归纳] 1．that引导主语从句，如句3，在从句中不充当任何句子成分，本身无任何意义，但不可省略。 2．whether引导主语从句，如句2，6，意为“是否”。whether引导的主语从句既可放在句首也可放在句尾，但if引导的主语从句只能放在句尾，前面须用it作形式主语。 3．连接代词what引导主语从句，what在从句中作表语，主语，如句5，宾语，如句1。连接代词who在从句中作主语，如句7。 4．连接副词how引导主语从句，如句7。 5．可用it作形式主语，真正的主语为名词性从句，如句4，6，7。 [对应学生用书P12] 在复合句中充当主语成分的句子叫作主语从句。主语从句可直接放在句首，也可用形式主语it代替，而将主语从句后置。 1．从属连词 that，whether，if等。 2．连接代词 who，whose，whom，which，what，whoever，whomever，whichever，whatever等。 3．连接副词 when，where，why，how，whenever，however，wherever等。 1．that引导的主语从句 (1)that引导主语从句时只起连接作用，在从句中不作任何成分，没有实际意义。但是，that不能省略。 That we need more equipment is obvious. 显然，我们需要更多的设备。 That she won the game made us very happy. 她赢得了比赛令我们非常高兴。 从句作主语，谓语动词用单数形式。 (2)在that引导的主语从句中，常用it作形式主语，that引导的主语从句后置，常见的此类句型有： ①It＋be＋形容词(obvious，natural，surprising，possible，likely，important，necessary等)＋that从句． It is certain that Mr Black will support your plan. 确定无疑的是，布莱克先生会支持你的计划。 It is obvious that you have made a big mistake. 很明显你犯了一个大错。 在句型“It＋be＋形容词＋that从句．”中，如果形容词为necessary，important等，主语从句要用虚拟语气。即：It is necessary/important that＋主语＋(should＋)动词原形＋其他．。 It is necessary that we (should) clean the room every day. 我们每天打扫房间是有必要的。 ②It＋be＋名词(词组)(no wonder，an honour，a good thing，a pity，no surprise等)＋that从句． It is a pity that you didn't attend the