发布时间 : 星期一 文章辽宁省北票市高级中学人教版高中英语选修八学案： Unit2 Cloning 第23课时更新完毕开始阅读f7f785a9fbd6195f312b3169a45177232f60e4e6
高二英语选修8 Unit2第2-3课时 Language points
Teaching goals
1 .Enable the students to learn the key words , expressions and sentences. 2.Teaching important and difficult points:
Master the use of the key words ,phrases and sentenses
part 1 language study
1. differ –different –difference 2.commercial –commerce 3. disturbing –disturbed –disturb—disturbance 4.medium –media (pl.) 5 forbid –allow /permit (opposite word) 6accumulate --accumulation 7．assumption –assume (v.) 8.regulation –regular(adj.) –regularly 9.resist –resistance(n.) –resistant(adj.) 10.decoration –decorate
Part 2Languge points
1. differ vi. 不一致, 不同, 相异, 不同意, 意见相左
常见的搭配有:1) A and B differ in … 2) A differs from B
3) sb differ from/ with 4) sb on/ about / over /upon sth
拓展: different adj. difference n
be different from
make no difference to sb.
make a difference
即时练习：用介词 from, with, on, about, upon 或 in 填空。
(1) We differ _________ him _________ that question. (2) The two nations differ ______ culture and religion. (3) The climate here differs ___________ that of the South. 2. undertake vt._________ ________ __________
undertake sth 承担某事 undertake a task/ project 承担一个任务/项目
undertake to do sth 许诺做某事/ 同意做某事 undertake that … 保证…
即时练习：(1).He will _________ __________ __________ next month (去旅行). (2).我愿意承接这项变革的责任 I can ________ _________ __________
for the changes.
(3).他许诺当我们的向导. He _________ _________ _________our guide .
3.pay off 1)（事业、计划）成功：2)付清薪水并解雇；3)偿还（债务等） 1)他付清全体船员的工资并将他们解雇。He ______ ______the crew of the ship. 2)最终他还清了所有的债务。 _____________________________________. 4. cast down：feeling unhappy and depressed使沮丧, 低沉， 使下降, 推翻
be cast down = feel discouraged
He was much cast down by the failure of the experiment. 即时练习：将下列句子译成英语 (1) 听到这个消息他很沮丧。
________________________________________________________________ (2) 发现事情的真相使他很沮丧。
________________________________________________________________ 拓展:
词汇cast about/around for_____________ cast away _________
cast aside _______________ cast off ____________ cast out ______ 5．objection n.__________
have/make an objection to (doing) sth. raise an objection ? object vi./vt. ? object to sth./doing sth. ? object to sb doing sth ? object that…
We object to being treated like this. ___________________________. I object that he is too young to take that position. ____________________. 即时练习：将下列句子译成英语
学生反对像孩子似地被对待。
________________________________________________________________ 我们反对因为一个人的错误而惩罚整个班级。
6.a storm of ….常常指感情猛然爆发或强烈表现
(Sudden violent outburst or display of strong felling) ? 一阵猛烈的抗议 a storm of protests ? 一阵弹雨/箭雨 a storm ofbullets/arrows
? 一阵暴风雨般的掌声/欢呼声 a storm of applause/cheers ? 一阵辱骂/抨击 a storm of abuse/criticism
7. have/make a strong/ great impact on对…..有（或产生）巨大影响(冲击） 翻译:
? 这场反对吸烟的运动对年轻人有极大的影响。_______________________ ?
? 这本书对读者产生了巨大的影响。__________________________
拓展: have an effect on ___________ ?
? have an influnce on
8. Identical adj.同一的，一模一样的
我们双方对应当怎么办的看法是一致的。
We ___________in our views of what should be done.
这是我们去年住过的那家旅馆。
This is _______________that we stayed in last year.
9. be appropriate to….. 适合于…. ; 与….相称的（=be suitable for a particular
person, condition, occasion or place; fitting) ? 用与你的题目相称的题材写。 ? Write in a style _____to your subject. ? 他的便服,不适宜在这样正式的场合穿。
? His casual clothes were not__________ for such a formal occasion.
10. accumulate vt/vi 收集, 聚集, 堆积。 ? 翻译:
He accumulated a fortune by hard work._______________________________.
教育的目的不仅仅是知识的积累。 __________________________________. Dust accumulated during my absence. _________________________________.
accumulation n. 积聚
the accumulation of knowledge ______________________.
11. be bound to do sth.1)注定，2)一定会(法律责任或义务)做某事。
明天天气一定会变好。
_______________________________________________________. 我觉得有必要对你说，你酒喝得太多了。
________________________________________________________.
Part 3 随堂练习：
complicated fate attain cast accumulate reform carrier As Freddy the frog grew older, he only had one ambition left to ___________ - to continue his career forever. To do this he thought that he would have to clone himself'. The doctor explained that this was a ______________ procedure that he should consider carefully. Shortly after Freddy did some research, he discovered the _________________ of Dolly the sheep. It seemed as if a clone was a _________________ of more weaknesses than its original. Freddy was ______________ down and looked for some way to _______________ the cloning procedure to avoid this problem. Sadly this seemed impossible. So Freddy made up his mind to enjoy his singing and to __________________ as many happy experiences as he could so that when he retired he would be able to look back on his life with satisfaction.