高中英语人教版选修八-unit3-导学案教师版知识讲解
课型二：词汇课(Discovering uful words and phras) 学习目标：
学习并掌握本单元所学的词汇和短语。
自主学习：
1. 【原句】When I called up my mother in the countryside on the telephone she was very upt. (P20)
我给住在乡下的母亲打电话的时候，她感到很心烦。
观察例句：
Your letter calls up tho pleasant days when we worked together. 你的来信使我回想起往日我们一起工作的快乐日子。
The makers have called in some cars with dangerous faults.
制造商已经要求把某些有大毛病的汽车收回。
Success calls for hard work.
要想成功, 必须苦干。
归纳总结：
call up____________________________
call back ___________ call out _______________
call in ____________ call at_______________
call for ___________ call on ________________
根据提示写出下面电话用语
①call up = ring up= ring= call 打电话
②call back = ring back 回电话
③hang on/ hold on 不挂断电话
④ring off 挂断电话
⑤answer the phone 接电话
即学即练：
根据句意填入适当的介、副词
①The government calls____ the youth to donate their blood voluntarily.
②He is ill; you should call____the doctor right away.咸蛋黄炒土豆丝
③Plea tell him to call ____. My number is 5766490.
④I shall cal____ his home tomorrow, and could you go with me?
2. Snakes come near the hou now and then，and they em to have made their home here，not far from the walnut tree. (P20) 蛇时不时地爬到房子附近，似乎是在房子附近离
胡桃树不远的地方安家了。
观察例句：独立英文
Everyone needs a pat on the back now and then.
每个人都需要不时地得到鼓励。?He went to e his grandmother every now and then.
他时常去看他的祖母。
思考：表示“时而，有时”的同义词或短语还有哪些？
【思考提示】sometimes；from time to time；every now and again,
at times, once in a while, occasionally等。_
归纳总结：
now and then偶尔；有时
即学即练：
①他时常提出一些奇怪的问题。
He rais some strange questions now and then .
②我喜欢偶尔去看电影。
I’d like to go to the cinema now and then .
当今时代主题3.【原句】Here was a chance for me to distinguish mylf by
inventing something merciful that would catch snakes but not
harm them. (P20)这次我有机会来表现一下自己了。我要发明某
种仁慈的东西，既可以把蛇捉住，又不会伤害它们。
1)distinguish
观察例句：
Jim distinguished himlf in the examinations, reaching the top
place in all his subjects.
吉姆考试成绩突出, 所有的科目都名列前茅。
People who can’t distinguish between colours are said to be
colour-blind.
不能辨别颜色的人被称为色盲。
What was it that distinguished her from her classmates?
是什么使得她有别于班上其他同学呢？
归纳总结：
distinguish vi. ＆vt. 显示……的差别，使……有所不同；辨别
distinguished adj.卓越的，著名的，杰出的
distinguishable adj.易分辨的，能区分的
区分/辨别……和……
使…有别于…，使……具有区别于……的特征
be 因……而出名
distinguish onelf (as...)（作为……）表现突出
distinguish by 以……为特征
即学即练：
完成句子
①作为运动员她已经享有盛名。
She has already distinguished herlf as an athlete. (distinguish)
②孩子们几岁的时候才能明辨是非？
At what age are children able to distinguish between right and wrong?
(distinguish)
③是什么使得她有别于她的同班同学？
防溺水心得What was it that distinguished her from her classmates? (distinguish)
2)Merciful
观察例句：
The merciful king saved the young officer from death.
仁慈的国王把年轻的军官从死神手中救了出来。
They had little mercy on their enemy.
他们对敌人决不留情。
They were lost at a, at the mercy of the wind and weather.
他们在海上迷了路，任凭风和天气的摆布。
归纳总结：
merciful adj. ______________________ mercy n. ____________
mercifully adj._____________ mercilessly adv.______________
show no mercy to____________________
have mercy on ________________________
at the mercy of _________________________
即学即练:
田径运动会用mercy的不同形式填空
The merciless king showed no mercy and decided to kill all the
prisoners; at last the merciful queen saved them.
4.【原句】I t about rearching the habits of snakes to find the
easiest way to trap them. (P20)
于是我就着手研究蛇的习性，以便能找到最简单的方法来捕蛇。
观察例句：
We t about our task at once with great enthusiasm.
我们立刻兴致勃勃地开始我们的任务。
飞镜又重磨Setting the chair aside, he sat on the floor.
他把椅子搁到一旁, 坐在地板上。
日本米思考：t about 和t out表示“开始做……”时在形式上有什
么不同？
不同点主要体现在其后所接的非谓语形式上，即：
t about doing sth. t out to do sth.
归纳总结：
t about____________________
t out ________________ t off_________________
t back_________________ t down_________________
t aside_________________
即学即练：
完成句子
①她每周都省出一点钱以备将来之需。
She t aside a little money each week for future u. （t）
②如果你想赶上火车，你最好立刻动身去火车站。
If you want to catch that train you’d better t off for the train station immediately. （t）
5.【原句】They abruptly disappeared into a convenient hole in the wall. (P20) 它们突然一下子就消失在附近的墙洞里了。
观察例句：
The school is at convenient distance from my home.
学校在我家附近。
儿童止咳化痰The place is convenient for bathing.
这地方适合游泳。
Come by to pick me up at your convenience.
在你方便的时候来接我。
在你方便的时候请来看我们。
