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Unit 2　The Grand Canyon was not just big.
◇目标导航◇
类别 课时要点
重点单词 below prep.在下面;在……以下 shine v.照耀 sign n.迹象;标志;招牌 silent adj.寂静的 silver adj.银灰色的;银制的 sky n.天;天空 grey adj.灰色的;(天气)阴沉的 beside prep.在……旁边;在……附近 reply v.回答;答复 clear v.(烟雾等)开始消失 stream n.小河;小溪 nearly adv.几乎;差不多 remain v.逗留;留下
重点短语 get out of从……出来 go through穿过 on top of在……上面;盖住 look over从……上方看过去 look across眺望;向对面看
重点句型 1.I got out of the car,went through a gate and walked along a dark path.我从车里出来,穿过一座大门,沿着昏暗的小路一路前行。 2.You’ll get there in five minutes.五分钟后你将到达那里。 3.I looked over them,but it was silent and there was no sign of it.我朝那片岩石望过去,但是一片静寂,还是看不见它。 4.Suddenly,the rain stopped and the clouds cleared.突然间,雨收云散。
重点句型 5.Far below me,the ground fell away and down to a river.远远地,在我的下方,地面(仿佛随光线)向下延伸,(逐渐)退落,显露出谷底的河流。 6.If you put the two tallest buildings in the world on top of each other at the bottom of the canyon,they still would not reach the top.如果你将世界上最高的两座建筑叠置于大峡谷的底部,它们仍不能触及它的顶端。
教学重点 1.让学生灵活运用各种时态描述自己的游历。 2.让学生掌握计量表达法。
教学难点 让学生灵活运用各种时态描述自己的游历。
◇教学过程◇
预习指导
一、方法指导
采取快读的方法把Activity 2中的生词和较难的句子画出来,然后读Activity 3中的问题,试着用“先题后文法”做题。
二、预习检测
Ⅰ.根据首字母及汉语提示补全单词
1.I asked him a question,but he didn’t　reply　(回答) to me.
2.The little girl is reading a book　beside/by　(在……的旁边) the river.
3.—Look at the　sign　(标志).Smoking is not allowed here.
—Sorry,I didn’t notice it.
4.Luckily,it　cleared　(转晴) up soon after the rain.
5.Ice is often seen here in winter as the temperature normally stays　below　(在……以下) zero.
6.Policemen asked the man to　 remain　(留下) in his home.
Ⅱ.英译汉
1.I got out of the car,went through a gate and walked along a dark path.
我下了车,穿过一个大门,沿着一条漆黑的小路前行。
2.You’ll get there in five minutes.
五分钟后,你就会到达那里。
3.I looked over them,but it was silent and there was no sign of it.
我朝那片岩石望过去,但是一片寂静,还是看不见它。
4.Suddenly,the rain stopped and the clouds cleared.
突然,雨停了,云散了。
5.If you put the two tallest buildings in the world on top of each other at the bottom of the canyon,they still would not reach the top.
如果你将世界上最高的两座建筑叠置于大峡谷的底部,它们仍不能触及它的顶端。
课堂教学
Step 1 情景导入
Teacher:Do you know something about the seven natural wonders (Get the related pictures ready beforehand) You can use the present words in Activity 1.Talk and give facts about the wonders as much as possible.
Step 2 快速阅读Activity 2中的短文,回答问题
1.When did the writer arrive at the Grand Canyon area
In early morning. 　
2.Were there many people when the writer visited the Grand Canyon
No,there weren’t. 　
3.What did the writer think of the Grand Canyon
It was great. 　
Step 3 细读Activity 2中的短文,完成表格
The Grand Canyon
How wide 　about fifteen miles　
How long 　more than 200 miles　
Step 4 小组内释疑
1.明确重难点,让学生试着翻译短文并完成Activity 3和4中的练习。
2.让学生试着体会含有现在完成时、一般现在时、一般将来时等的句子,总结其构成及用法。
Step 5 读后写
完成Activity 5和6的练习,让学生讲述参观过的人造奇观或自然奇观,在小组内交流。
板书设计
1.辨析through,across与cross。
三者都表示“通过;穿过”,但词性和用法不同。
(1)through是介词,表示从一端到另一端,它表示的动作是在内部空间进行的。
(2)across也是介词,强调在物体表面上或沿着某一条线的方向进行的动作,常和表示移动的动词(如walk,run,fly,jump等)连用。
(3)cross是动词,表示“穿过;越过;渡过”。
2.辨析get out of与get off。
(1)get out of意为“从(小汽车、电梯等)里出来”,其反意短语为get into。
(2)get off 意为“下车”,后接bus,plane,ship,train等交通工具,其反义短语为get on。
3.英语中表达长、宽、高、深等概念时,即表示计量时,常用结构“主语+谓语+数字+单位+long/wide/high/deep...”。
◇教学反思◇
在第一单元讨论人造(自然)奇观的基础上,本单元具体描述了自然奇观,要求学生掌握文中关键句型,提高自己的阅读和写作能力。学生要熟练运用词汇(如beside,reply,look over等)、句型(如“in+一段时间”,if引导的条件状语从句等)及语法(如一般现在时、一般将来时、现在完成时等)描述自然或人造奇观等。

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