Unit1 Science and Scientists Discover useful structures 课件-2024-2025学年高中英语人教版（2019）选择性必修第二册

Unit 1 Science and Scientists Period 3 Discovering useful structures The Predicative Clauses what 在表语从句中充当______________ 表示____________________________. 1. The question is what caused the accident. 2. That mountain is no longer what it used to be . 3. What he told you was what had been discussed at the meeting. 主语、表语、宾语 什么，什么样子，或所…的（人或事） 3.引导词的用法 (what) 主语 表语 宾语 引导词的用法 The use of conjunction words who 在表语从句中充当______________ 表示____. The problem is who could do the work 2. My trouble is who (whom) I can turn to. 主语、宾语或表语 谁 4. 引导词的用法 (who) 主语 宾语 引导词的用法 The use of conjunction words which 在引导表语从句时,常充当_____________ 表示 。 I read about it in some book or another,but what I don’t know is which (book) it is. 定语,表语 其/当中哪一个 5.引导词的用法 (which) 定语 引导词的用法 The use of conjunction words 由as if ,as though引导表语从句，表示 。句子中的系动词常用look, appear, seem等。 1.It looks as if it was going to rain. 2.The young man with long hair looks as if he were a girl. 6.引导词的用法（as if, as though） 好像 引导词的用法 The use of conjunction words 引导词 Conjunction words 引导词 用法 从属连词 that 无成分，无意义 Whether 无成分，意为“是否” 连接代词 what,which,who,whom, …+ever, whose 在从句中充当主语，宾语，表语，定语 连接副词 how, when, where, …+ ever, why 在从句中充当状语 其它连接词 because, as if ,as though 因为，好像，似乎 1.表语从句一定是个陈述语序。 The question is whether is the enemy marching towards us. 2.if可以引导宾语从句，但是不能引导表语从句， 引导表语从句表达“是否”只能用whether： The question is whether he has passed the test. ATTENTION!!! 表语从句的注意事项 3.that 引导表语从句时，和宾语从句不同，that 不可省略。 What I said was that I would give him a better one. The reason why he is late for school is ________ he missed the bus. 2. Why we decided to put off the football match is ________ the weather was too bad. that that 当主句的主语是 _____________ 或 why 引导的 __________时常用 ______ 来引导表语从句，而不用 because。 the reason 主语从句 that Attention 3. I think that’s _____ he was so angry. 4. I think it is ________ you are doing too much. 5. The reason ______ he was so late is _____ it was raining hard. why because that / this / it + is / was +why + ________ (原因 / 结果) 表示“_________________________” that / this / it + is / was + because + _______ (原因 / 结果) 表示“________________________” the reason why … is that … 中 why 是引导 _________，that 引导的是 _________，表示“___________________”。 这 / 那就是……的原因 原因 这 / 那就是因为…… 结果 why that 定语从句 表语从句 ……的原因是…… Attention This is __________I want. My English is limited. This is _______I hate reading English books. The village is _________ I used to spend my holiday. He is my favorite singer. It is ________ I really love the way he behaves. The trouble is __________ we are short of funds. My problem is __________ coat is suitable for me. I’d like to start my own business—that’s ____ I want to do if I had the money. What I want to know is _______will support me. what where why because that which what who Activity Learning and practice 1. My worry is if he can get there on time. 2. The reason why he failed was because he hadn’t studied hard. 3. My advice is that he sees the doctor right away. 4. The trouble is what we are short of money. that Practice whether that see 即学即练 改错 即学即练 learning and practice 1.He is careless and irresponsible. That was _______ he was fired. 2.He was fired. That was _________ he is careless and irresponsible. 3. The reason _______ he was fired was ________ he was careless and irresponsible. why because why that Rule 6 :引导词that, because, why的区别： 描述原因用that或because. 描述结果用why Bradley Hand ITC 12 即学即练 learning and practice This is __________I want. My English is limited. This is _______I hate reading English books. The village is _________ I used to spend my holiday. It is ___________ I really love the way he behaves. The trouble is __________ we are short of funds. My problem is __________ coat is suitable for me. I ‘ d like to start my own business—that’s ________ I want to do if I had the money. What I want to know is _______will support me. what where why because that which what who Bradley Hand ITC 13 1. 表语从句的构成: 引导词+简单句 2. 引导词: ｛ 连词：that, whether, as ,as if 连接代词：who, what, which 连接副词：when, where, how ,why 3. 3个注意点: ②if 不引导表语从句 ③主语为reason时，引导词用that ④语序 ①that引导表语从句时不能省略 Ⅲ Summary $$