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1、教师用书独具演示,教学目标 (1)熟记学案中所列出的单词和短语。 (2)通过学案中所给出的重点单词和重点短语的学习，让学生能够正确理解和使用这些单词和短语，能够运用这些词语造句。 (3)通过对语法的教学让学生能够理解并能够运用主语从句。,教学地位 语法是学生感到比较难以掌握的东西。让学生正确理解和掌握语法知识是让学生学好英语的关键，所以应给学生创设语境，让学生学会该语法的应用，而不要让学生死记硬背语法条文，应从理解的基础上去运用这些语法。,新课导入建议 通过对学生作业的检查导入本堂新课。,演示结束,1crash vi.& vt.碰撞；坠落；使撞毁 n(汽车的)撞车事故；(飞机的)失事；突然发出
2、的巨响 Other scientists believe that a comet crashed into the earth long ago and caused the disappearance.(P29) 其他科学家认为很久以前一颗彗星与地球相撞导致恐龙灭绝。 He witnessed a serious car crash today.Two cars crashed into each other and let out a loud crash. 今天他目睹了一起严重的撞车事故。两辆车撞在了一起，发出了很大的爆裂声。,2climate n气候，风气，潮 Since the l
3、ast ice age，the climate of the earth has not changed very much.(P29) 自从上一个冰川世纪以来，地球上的气候变化不大。 I dont like the moral climate in some countries. 有些国家的道德风气我不喜欢。,3block out挡住(光线)，不去想(回忆) As a result of this event，a great dust cloud formed in the sky blocking out the sunlight.(P29)正因为这一事件，天空中形成了一团巨大的尘云，挡住
4、了阳光。 The heavy curtain blocks out the light. 这厚窗帘把光挡住了。,We found that a big elephant blocked our way. 我们发现一头大象挡住了去路。 The traffic is very heavy and has begun to block up the streets.交通量很大，已经开始把街道阻塞了。,观察下列从Reading中选取的句子，并说出其引导的从句在主句中充当的成分及引导词的功能。 What it was to become was uncertain until between 4.5 a
5、nd 3.8 billion years ago when the dust settled into a solid globe. The earth became so violent that it was not clear whether the shape would last or not. What is even more important is that as the earth cooled down，water began to appear on its surface.,It was not immediately obvious that water was t
6、o be fundamental to the development of life. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 自我总结 1.引导词what/whether/that引导的从句在句中均可作主语。,名词性从句：主语从句 在复合句中作主语的从句叫做主语从句。 1主语从句的引导词,Who will do it doesnt ma
7、tter.(连接代词who在从句中作主语) 谁做这件事都没有关系。 What we need is more water.(连接代词what在从句中作need的宾语) 我们需要的是更多的水。,2it作形式主语 为保持句子平衡，常把主语从句后置，而用形式主语it代替。it作形式主语时常用于以下句型：,It makes no difference where we shall have the meeting.我们在哪儿开会并不要紧。 It is said that Mr.Green has arrived in Beijing. 据说格林先生已抵达北京。 3主语从句中应注意的问题 (1)从句的语
8、序要用陈述语序。 Whoever leaves the room last is expected to turn off the lights.无论谁最后离开房间都要把灯关掉。,(2)从句作主语时，主句的谓语一般用单数形式。有时受表语的影响用复数形式。 Who has left so many sweets on his table makes him curious.谁在他的桌上留下了那么多糖块令他很好奇。 What he wants to read now are some magazines. 现在他想读的是一些杂志。 (3)从句的时态一般要取决于主句。 What made peopl
9、e excited was that the solar ship had completed aroundtheworld trip. 让人们激动的是太阳能船已完成了环游世界的旅行。,.单项填空 1(2013江西高考) one of you breaks the window will have to pay for it. AWhoever BWhatever CWhichever DWherever 【解析】 句意：你们当中无论哪一个打破窗户都必须赔偿。此处指从“you”这一范围中作出选择，故选C项，表示“无论哪一个”。 【答案】 C,2(2013陕西高考)It remains to b
10、e seen the newly formed committees policy can be put into practice. Athat Bwhich Cwhat Dwhether 【解析】 句意：新组建的委员会的政策是否会付诸实施还有待观察。该句包含一个由whether引导的主语从句“whether the newly formed committees policy can be put into practice”，该主语从句不缺成分，所以排除B和C；由语境中的remains to be seen可知，“是否实施新政策”还有待观察，所以此处要用whether。故选D。 【答案】
11、 D,3Was decided that they should start the project the next week? Ahe Bthis Cthat Dit 【解析】 本句可还原为“It was decided that.”，it为形式主语，that引导真正的主语从句。 【答案】 D,4It matters little a person dies，but matters much more is he lives. Ahow；what；how Bhow；it；how Cwhy；it；why Dwhich；what；that 【解析】 句意为“一个人怎么死的不太重要，但重要的是他
12、是如何活着的”。第一空用how引导主语从句，it作形式主语；第二空what引导主语从句；第三空用how引导表语从句。 【答案】 A,5Which topics you are interested in none of my business. about is the present problem. Ais；What I am concerned Bare；What I am concerned Cis；What am I concerned Dare；What am I concerned 【解析】 which引导的从句作主语时通常按单数处理，主句谓语应用单数形式，排除B、D两项；主语从
13、句要用陈述句语序，故选A项。 【答案】 A,6The villagers have already known well do is to rebuild the bridge. Athis Bthat Cwhat Dwhich 【解析】 句意：村民们已经知道我们要做的事是重修这座桥。分析句子结构可知，known后的宾语从句中含有一个主语从句，该从句缺少引导词并且从句中do缺少宾语，故用what，意为“的事情”。this不能引导从句；that在名词性从句中不作句子成分；which强调“哪一个”，不符合句意。 【答案】 C,7It remains to be seen the plan can
14、be put into practice. It depends on your determination. Awhether Bwhere Chow Dthat 【解析】 It remains.中的it是形式主语，“ the plan can be put into practice”是真正的主语，根据句意，空格处应有“是否”的含义，所以选用whether。 【答案】 A,8 all the inventions have in common is they have succeeded. AWhat；what BThat；that CWhat；that DThat；what 【解析】 句
15、中is前面的部分为主语从句，从句中含有“have.in common”短语，因此前一空格中的词应引导主语从句并作have的宾语；后一空格中的连词引导表语从句，从句中succeeded为不及物动词，因此该连词不充当句子成分。that引导名词性从句时不在从句中充当句子成分。 【答案】 C,9 he referred to in his article was unknown to the general reader. AThat BWhat CWhether DWhere 【解析】 句意：文章中他所提及的内容一般读者不知道。此主语从句中referred to后面明显缺宾语，所以应该选连接代词，故
16、C、D项被排除；that在从句中不充当成分，故选B项。 【答案】 B,10It is obvious to the students they should get well prepared for their future. Aas Bwhich Cwhether Dthat 【解析】 that引导从句为真正的主语，it作形式主语。 【答案】 D,.用适当的连接词完成下列句子 1 he got the first prize in the English Contest surprised all of us. 2 we will go to visit Hong Kong in this
17、 winter vacation remains unknown. 3 will take the place of Mr.Li as our new headmaster hasnt been decided. 4 caused the accident to happen hasnt been made clear yet. 5 has helped to save the drowning girl is worth praising.,6It is said Peter will have a chance to travel abroad next month. 7 Liu Yang
18、 ate her food in space is we want to know. 8 he found the way home after he lost his way in the deep forest is not clear to us. 9 he didnt come yesterday is unknown. 10I read about it in some book or other.Does it matter it was?,【答案】 1.That 2.Whether 3.Who 4.What 5.Whoever 6.that 7.How；what 8.How 9.Why 10.where,