选修8 Unit 3 Inventors and inventions 教学辅导

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一. 教学内容：
Unit 3 Inventors and inventions
二. 教学目标：掌握本单元的重点单词与短语
掌握本单元的语法:过去分词的用法
Ⅰ.Language points:
1. When I called up my mother in the countryside on the telephone, she was very upset.
call up 打电话，使……回忆起
今晚我会给你打电话。
Tonight I will call you up.                                               
老相片引起了我对童年的回忆。
The old photo call me up of my childhood.                                  
call back召唤某人回来；再访；回电话
call for需要，要求，接（人或物）
call in邀请；请来
call on拜访（人）
call at拜访（某地）
Ex. ——Can I do the job?
    ——I’m afraid not, because it ______skill and patience.
    A. calls on                 B. calls out  
C. calls up                D. calls for
2. now and then 时而；不时= sometimes, but not often
我有时喜欢去看歌剧。
______________________________________________________________
(I like to go to watch the opera now and then.)
相关短语：
from time to time有时；不时
(every) now and again时而；不时
from now on从现在开始，今后
just now刚才
since then从那时以来
  3. Here was a chance for me to distinguish myself by inventing something that would catch snakes but not harm them.
distinguish vt. & vi.
(1)辨别；辨认
从远处我能认出他们。
______________________________________________________________
(I)can distinguish them at a distance.)
(2) （常与from, between连用）区别；区分
应当教育孩子分辨好坏。
Children should be taught to ________________________________________
(3) (常与from连用) 有别于；有……特点
语言把人和动物区别开来。
Speech______________________________________________________
( Speech distinguish humans from other animals.)
(4)distinguish oneself 显扬自己；使自己扬名
这个人因智慧而扬名。
The man_________________________________________________________.
(The man distinguished himself by his wisdom.)
distinguished adj. 著名的，出名的
distinguishing adj. 有区别的
distinguishable adj. 可区别的
4. I set about researching the habits of snakes so I could trap them in the easiest way.
set about =set out: to begin or start 着手；开始
Ex1.他一到那儿就着手解决问题。
He _________________________________________________ as soon as he arrived there.
= He _______________________________________________ as soon as he arrived there.
set out出发，起程
set out to do sth. 开始做某事
set off出发，动身
set aside留出，对……不予考虑
set down记下，写下
set up设置，造成，产生
  5. They abruptly disappeared into a convenient hole in the wall.
abruptly adv.突然地，唐突地     abrupt adj.突然的；意外的
Ex. 这路有很多急转弯。
Ex1. The road is full of ________________________________________________.
这会议突然结束了。
Ex2. The meeting came to _____________________________________________.
6. Ex1)._________ with the size of the whole earth, the biggest ocean does not seem big at all.
    A. Compare              B. When comparing  
C. Comparing             D. When compared
Ex2). _____more time, we are sure to finish it.
A. Given     B. Giving   C. Be given    D. If giving
注意：在条件/时间/让步状语从句中，当主语从句与从句的主语一致时，从句中的主语与be可以省略。
7. convenient  adj. 便利的，方便的
be convenient to sb. 对某人方便
it is convenient for sb. 对某人方便
it is convenient to do sth. 做某事方便
Ex1.三点钟对你方便吗？
_____________________________________________________________

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Ex2.我想这个时候见你恐怕不大合适。
I’m afraid this isn’t a ________________________________________ to see you.
警示: convenient 不能以人作主语。
Ex3. Come and see me whenever________________.
A. you are convenient      B. you will be convenient

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