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【最新】高中英语必修三教学课件:Unit+4+Astronomy_+the+science+of+the+stars―人教_图文

【最新】高中英语必修三教学课件:Unit+4+Astronomy_+the+science+of+the+stars―人教_图文

Unit 4 Grammar Noun clauses as the subject QUIZ 课前小测 Use the words below to fill in the blanks. whether what who whose whatever 1. ______ Whose watch was lost is unknown. 2. Whatever ________ you did is right. 3. _________ Whether we will go for an outing tomorrow remains unknown. 4. ______ What we need is time. 5. ______ Who will be our monitor hasn't been decided yet. 上面的空大家都填对了吗? 上面每个句子的主语,大家 能找到吗?同时思考这些主 语有什么特别之处? 1. Whose watch was lost is unknown. 2. Whatever you did is right. 3. Whether we will go for an outing tomorrow remains unknown. 4. What we need is time. 5. Who will be our monitor hasn't been decided yet. Find out the subject 主语在哪里? ? 1. The sky in the countryside seems quite blue. ? 2. Flying in my own house is my dream. ? 3. To apologize to his parents was a terrible thing for him. ? 4. What I have got is all here. ? 1. The sky名词做主语 in the countryside状 seems quite blue. ? 2. Flying in my own house 分词做主语is my dream. ? 3. To apologize to his parents不定式作主语 was a terrible thing for him. ? 4. What I have got句子作主语 is all here. 总结:句子中的主语除了名词、代词, 还包括不定式、分词甚至句子都可以 充当。 “是句子必有主谓 有主谓必成句子” 主语从句 (Subject Clause) 如果一个句子在复合句中充当一个主语, 那么这个句子就是主语从句。 That he finished writing the composition in such a short time surprised us all. What we need are good doctors. Whom we must study for is a question of great importance. 连接词—连词不充当句子成分 只起连接作用 不可省略 That That the earth moves around the sun is well known. Whether (是否) Whether he will come or not is not known yet. 连接词—代词充当句子基本成分 且有实际意义 不可省略 what What you need is more practice. which Which one is the best is not clear. Who Who will go makes no difference. whoever whatever whichever 连接词—副词充当句子状语成分 有实际意义 不可省略 ? when, where Where he has gone is a question. When the show will be on isn’t known. why, how Why there is gravity is hard to understand. How he can earn a living in Britain remains a big problem. 8. whoever、whatever、whichever可引 导主语从句。 Whoever comes will be welcome. Whatever he did was right. Whichever of you comes in will receive a prize. 小结 1.引导主语从句连词有that, whether, who, what, whatever等。 2. 连词位于句首不能省略。 3. 主语从句大多数情况下视为第三 人称单数, 但在关系代词what引导 的主语从句后谓语动词的数要根 据句意而定。 为了防止句子头重脚轻,通常把形式 主语it 放在主语位置,真正主语后置。 1. It is certain that he will win the match. 2. It is true that he has made a very important discovery in chemistry. 3. It is very likely that they will hold a meeting. 延伸与了解 1. 以that 引出的主语从句,常以形式 主语it引导, 结构为: It is +形容词/ 名词/某些动词ed + that 从句。 2. 在有些that从句中要用虚拟语气 (should +do/should +ha

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