北师大版高中英语选修七学案 Unit20SENTENCE EXPLANATIONS UNIT 20 lesson 1, lesson 2.doc

unit 20 warm-up & lessons 1-2请和你的同学一起认真分析下列句子，并补全所缺内容。这种学习方式能逐步提高你理解长难句的能力。1. the future is now big business and many people will attend the seminar with dreams of starting new enterprises based on the predictions they will hear this weekend. (p20)【分析】本句是一个由and连接的并列复合句。and前的分句是一个简单句，and后的分句是一个复合句。with dreams of . this weekend作状语；based on the predictions . weekend作定语，修饰_；they will hear this weekend是定语从句，修饰_。【句意】目前，未来是个热门议题，许多人将参加研讨会，他们梦想在这个周末听到的预测的基础上开始新事业。【仿写】警察没有放弃并且基于这个女孩仍被藏在镇上某处这样一个假设开始挨家挨户地搜查。police didnt give up _ they carried out a house-to-house search _ _ _ _ that the girl was still hidden somewhere in the town. 2. by the year 2015, the clothing industry will have produced new types of material that will remain stainless no matter what you spill on them. (p20)【分析】本句是一个主从复合句。the clothing industry will have produced new types of material是主句，其谓语动词用了将来完成时，表示在未来某个特定的时间（2015年）之前已完成的动作。that will . on them是_从句，同时又是一个复合句，其中no matter what you spill on them是_状语从句。【句意】到2015年，服装工业将生产出新型的材料。不管你将什么东西洒在上面，都不会留下污点。【仿写】当这封信送到的时候，西蒙将已经离开他就读的那个国家，不管那里发生了什么。_ _ _ that this letter reaches, simon _ _ _ _ the country _ _ _ _ no matter _ _ _.答案1.【分析】enterprises; predictions【仿写】and; based on the assumption2.【分析】定语；让步【仿写】by the time; will have already left; where he is studying; what happens thereunit 20 lesson 3 & communication workshop请和你的同学一起认真分析下列句子，并补全所缺内容。这种学习方式能逐步提高你理解长难句的能力。 1. we started flying around the world and meanwhile, scientists figured out how to split the atom, previously thought to be the smallest particle of matter in the universe. (p24)【分析】本句是一个由and连接的并列句。and前的分句是一个简单句。and后的分句中，how to split the atom为“疑问词+不定式短语”作figured out的宾语，previously thought to be . universe为过去分词短语作定语修饰atom。【句意】我们开始在世界各地飞行，同时，科学家们发现怎样分裂原子，而原子以前被认为是宇宙中最小的物质微粒。【仿写】我上大学去了，与此同时，我的朋友查尔斯在考虑如何建立自己的公司，而这被认为是非常具有挑战性的。i went to college, _ _, my friend charles _ _ _ _ _ _ his own business, _ _ _ _ _ very challenging. 2. without the breakthroughs of these pioneers in science and technology, whether lucky or planned, the world as we know it today would have been a completely different place. (p25)【分析】本句是一个主从复合句。主句为the world would have been a completely different place；without引出的短语是一个与_事实相反的假设；whether lucky or planned是插入语；as we know it today是world的定语。【句意】没有这些科技先驱们的发现，不管是由于幸运还是有所计划，我们今天所熟悉的这个世界将会是完全不同的世界。【仿写】如果没有彼得的帮助，不管是靠技巧还是靠运气，我们都不可能在这场比赛中得一等奖。_ _ _ _ peter, _ by skill or luck, we _ _ _ _ _ in thecompetition.答案1.【仿写】and meanwhil