Unit 5 Into the unknown 学案（含答案）—外研版（2019）选择性必修第四册高二英语下学期期末复习

Unit 5 Into the unknown—高二英语下学期期末四步复习法 一、学习目标整合 知识目标 Master the vocabulary and expressions related to exploration and the unknown. Understand and master the key usages of the noun clauses. 能力目标 Enhance students’ listening, speaking, reading, and writing skills. 情感目标 Develop a strong curiosity and enthusiasm for exploration. Cultivate students’ qualities like perseverance and innovation. 二、思维导图回顾知识 三、重难知识易混易错 名词性从句 一、连接词that，whether，if引导的名词性从句 1．that引导主语从句时，常用it作形式主语，that不作从句的任何成分，但通常不可省略。 It is amazing that he finished the work ahead of time. 2．引导宾语从句的that不作从句的任何成分，常可省略。 I believe (that) he will succeed in the competition. 3．引导表语从句和同位语从句的that不作从句的任何成分，通常不可省略。 The fact is that he didn't tell the truth. The news that he won the first prize is exciting. 4．whether与if都可以引导宾语从句。 I wonder if/whether he will come to the party. 5．whether还可以引导主语从句、表语从句以及同位语从句，其中引导同位语从句时不可以用if来替换。 Whether he will attend the meeting is still unknown. The question whether he can pass the exam is worrying him. 其他： 1．动词find，feel，think，consider，make，believe等后面有宾语补足语时，需用it作形式宾语而将that引导的宾语从句后置，that通常不可省略。 I feel it important that we should learn a foreign language well. 2．that引导两个以上的宾语从句时，通常只省略第一个从句中的that。 He said (that) he would go to the park and that he would stay there for a while. 3．whether与if引导宾语从句时，大多数情况下可以互换。但or not前面用whether；用于介词后的宾语从句也用whether引导。 We are discussing whether or not we should start the project. She is interested in whether he can solve the problem. 4．有时主句的谓语较短，而同位语从句的内容较长，这时为避免“头重脚轻”，常常将谓语部分提到从句前面，形成分隔式同位语从句。 The hope will come true one day that he will travel around the world. 二、连接代词和连接副词引导的名词性从句 1．引导名词性从句的连接代词有who，whom，whose，what等。它们不但起连接作用，还在从句中作主语、表语、宾语、定语等。缺少连接代词，从句不完整。 Whom he met yesterday is a famous writer. 2．引导名词性从句的连接副词有when，where，why，how。它们不但起连接作用，还在从句中作状语，表示时间、地点、原因和方式等。缺少连接副词，从句也不完整。 How he solved the problem is a mystery. （引导名词性从句的还有“疑问词＋ever”，如whoever 、whomever、wherever、whichever等，它们在从句中充当某些句子成分。） Whoever breaks the rule will be punished. 练习： 1._____ we are supposed to do is to spare no effort to preserve our cultural heritages. 2.She asked _____ the measures would be able to restore public confidence in the economy. 3.What he wants to know is _____ we can finish our work by tomorrow morning. 4.I hold a firm belief _____ a positive attitude counts a lot whatever we will take up in the future. 5.This young man never thinks about _____ it takes to get to the top of one ca ... ...