(
课件网) In this class, you will identify and summarize the uses of noun clauses as subjects; use subject clauses to talk about what qualities make a person so successful. Circle the simple subject in each sentence. Time flies. Ice cream is the favorite dessert of children. The children in the first row received badges. Why would a baby elephant be eating leaves Who gave you that present To leave was his wish. From the ceiling hung the chandelier (吊灯). Tall buildings and windy weather don’t mix well. Eat your dinner with a spoon. Driving too fast is dangerous. My favorite older brother, who just started tenth grade, rides his bike to school. You What concerned him most was that farmer soften had poor harvests and sometimes even had a serious shortage of food to eat. Discover useful structures: Subject clauses what 在主语从句中充当 _____, 译为 _____ 主语 事情 How this could be done was a challenging question at the time. Whether it was possible to develop a hybrid of self-pollinating plants such as rice was a matter of great debate. how 在主语从句中充当 _____, 译为 _____ whether 在主语从句中充当 _____, 译为 _____ 方式状语 怎样 不做成分 是否 It is estimated that about 60 percent of domestic rice consumption in China is comprised of crops generated from Yuan's hybrid strains, and his strains have allowed China's farmers to produce around 200 million tons of rice per year. that 在主语从句中 _____, 但不可省略。 不做成分 What impresses people most about Yuan Longping is his ongoing ability to fulfil his dreams. 主语从句，即在复合句中充当主语成分的句子. what 在主语从句中充当 _____, 译为 _____ 主语 事情，东西 归纳总结： ★主语从句必须有引导词；主语从句用陈述句语气。 ★连词位于句首不能省略 ★主语从句大多数情况下视为第三人称单数，但也有例外. ★主语从句引导词的选择主要是根据从句的结构和意义来选择。 如果从句的意义和结构完整，则用that。 如果从句的意义和结构不完整，则根据从句的意义和结构选择相应的引导词。 练一练：用适当的连词填空 _____ bag it is cannot be told. _____ India needs is a law to make land ownership fairer. It is not yet decided _____ cash crop will be produced next year. _____ he said was right. Whose What What/Whatever which/what 比较that / what 1. _____ he wants is a book. 主语从句 2. _____ he wants to go there is obvious. 主语从句 3. _____ happened is not clear. 主语从句 4. This is the best TV_____ is made in China. 定语从句 5. The first museum _____ he visited in China was the History Museum. 定语从句 that 和what 的选用：that 和 what 都可引导主语从句。但是，what除起连接作用外，还在主语从句中充当成分，可做从句的主语、宾语、或表语，相当于the thing(s) that；而that在主语从句中不充当任何成分，只起连接作用。 What That What that that 主语从句考点归纳 主语从句连接词的使用 主谓一致 形式主语结构 主语从句的语序 陈述句 根据从句结构和意思 一般为单数 为了使句子保持平衡，常用it来代替主语从句，而把主语从句放到后面，尤其是连词that引导的主语从句常用于此种句式中。 常用句型如下： It+ be +名词+ that 从句 It ... ...
