精讲点拨
1. through 与 across的区别：through 是“穿过”的意思，是介词，常指“从某空间内或某物中间穿过”，多指穿过门、窗、洞、森林、隧道等；across是指“从某个平面横过”，多指穿过街道、马路、桥梁、河等的表面。
例如： walk through the forest , run across the bridge.
2. in five minutes 意为“5分钟以后”，“in +一段时间”表示“在一段时间之后或之内”，常用于一般将来时，用“how soon”提问。
【拓展】
与how 有关的疑问词
How long 是“多久”的意思，常对for 和 since 引起的表延续的短语提问，常用于现在完成时；
How often 有“多久一次”的意思，对频率提问，如 often ，sometimes，twice a week 等表示频率的词或短语，常用语一般现在时或一般过去时；
How many 后跟复数名词，对可数名词的量来提问；
How much 后可跟不可数名词，对不可数名词的量来题问，或对价格提问；
How many times 对次数提问，如twice，several times等，是“多少次”的意思，常用于现在完成时；
How far 对距离提问；
用适当的疑问词完成句子
1）_______________ is it from your school to your home?
2) _______________ has he been to the USA? Once.
3) _______________ does the boy visit his grandparents?
Twice a month.
4) _______________ will your sister come back from Shenzhen?
In a week.
5) _______________ are the shoes?
One hundred yuan.
3. too … to … 是“太……而不能……”的意思。可与enough… to…，so … that…改写。
例如： He is to young to go to school.-------同义句
He isn’t old enough to go to school.
He is so young that he can’t go to scool.
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www.yf1234.com 四. 学习成果展示
1. 选择正确的答案
1） All the students will climb the mountain if it _______ rain tommow.
A. won’t B. don’t C. didn’t D. doesn’t
2) — _______ will the supper be ready? I’m very hungery.
— In a minutes.
A. How soon B. How long C. How much D. How often
3) Please turn on the light. It is _______ dark _______ see anything in the room.
A. too，to B. so, that C. such , that D. too, not to
4）The two men walked _____ the tunnel and got to a small house .
A. across B. through C. crossing D. over
2. 完成句子
1）During the trip, after _______ _______ ( 穿过) the forest , we sailed _______ ( 横渡 ) a big river.
2) The river in our hometown is about _______ _______ _______ (20xx 公里长)。
五．当堂反馈小结： 回想本课所学内容，你学到了那些？你还有那些疑问？
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I was on the edge of the Grand Canyon教案