Unit 5 Working the Land Discover Useful Structures 主语从句课件-2023-2024学年高中英语人教版（2019）选择性必修第一册

Subject Clauses Unit 5　 Working the Land Who is known as the Father of Hybrid? Yuan Longping is known as the Father of Hybrid? What is his life pursuit? Keeping all the people away from hunger is his life pursuit. What impressed people most about him? (para. 5) What impressed people most was his ongoing ability to fulfil his dreams. 如果一个从句在句子中担当主语，那么这个从句就是主语从句。 Definition of subject clause Combine the two sentences into one. Yuan had realised his dream of seawater rice. It surprised the whole world. That Yuan had realised his dream of seawater rice surprised the whole world. Combine the two sentences into one. Was it possible to develop a hybrid of self-pollinating plants? It was a matter of great debate. Whether it was possible to develop a hybrid of self-pollinating plants such as rice was a matter of great debate. Combine the two sentences into one. What concerned Yuan Longping most? farmers often had poor havests and sometimes even had a serious shortage of food to eat. What concerned him most was that farmers often had poor harvests and sometimes even had a serious shortage of food to eat. Combine the two sentences into one. How could farmers boost yields? It was a challenging question. How farmers could boost yields was a challenging question. 主语从句的引导词 例词 说明 that 在从句中均不作成分，只起连接作用；无实义 whether 在从句中均不作成分，只起连接作用,表示“是否”。 连接代词 who, whom, what, which, whoever, whatever等 在从句中作主语、宾语、表语、定语等名词性成分。 连接副词 when, where, how, why, whenever, wherever等 在从句中作时间、地点、方式、原因状语等副词性成分。 主语从句的本质：用三种句子--陈述句、一般疑问句、特殊疑问句，在另一个句子中做主语。 三种引导词：that,whether, 和疑问词（关系代词+关系副词）。 Complete the sentences using what, whether, where, when, who, why, how or that. 1. _____ is needed for success is your hard work. 2. _____ we will go to Beijing has been known to everyone. 3. ____can join in the sport meet is decided by the teacher. 4.________ it will rain or not is not clear. 6. ____ the earth is a solid ball is known to us all. What That Who Whether That 5. ______ the earth is becoming warm is a goo