好多老师又要忙着为同学们写教案、备课。教案的制作需要清晰地思路，条理的章程，精品学习网编辑了高三英语教案重点难点：Lesson 23，欢迎老师们参考借鉴!

1. European countries are now making an active effort to reuse materials more than they used to. 欧洲国家现在比以往更加积极地致力于废料的再利用。make an active effort to do sth. 积极努力地去做某事;e.g. She is sure to make an active effort for you. 她一定会为你做出积极努力的。He made a great effort to catch up with others. 他做出巨大努力以赶上其他人。He made an effort to get along well with his classmates. 他努力和同学们友好相处。Please make an effort to arrive at school early tomorrow morning. 明天请尽量早点到校。

2. The ink is taken out by a special technique…. 用特殊的技术清除油墨，take out 除去;檫掉;把……搞掉;e.g. He took out the pencil marks from his English paper.他把英语试卷上的铅笔痕迹檫掉了。How can I take out the ink stains from my coat? 我怎样才能把外套上的墨水污迹去掉呢?You will have to have the bad tooth taken out 你必须将坏牙拔掉。technique 技巧;技能;手法;e.g. Writing poetry requires great technique. 写诗需要很强的技巧。The violinist’s technique is excellent. 那位小提琴手的演奏技巧非常高明。

3. More than 60000 small factories which seriously polluted the environment were shut down in 1996. 曾经严重污染环境的六万多家小工厂已于1996年关闭。1). shut down 关闭;使……停止;e.g. The factories has been shut down and the workers are unemployed. 那家工厂关闭了，工人失业了。The chemical works has been shut down for lack of raw material. 化工厂因为缺乏原料而停业了。

4. environment n = all the surrounding conditions which influence growth and development 环境;周围的状况;e.g. Children need a happy home environment. 孩子需要幸福的家庭环境。They have passed new laws to prevent the pollution of the environment. 他们已经通过了新的法令，防止污染环境。natural environment 自然环境;social environment 社会环境;

5. They were separated at birth. 他们在出生时被分开了。at birth “在出生时”; at parting 在分手时;at the beginning 在开始时;

6. They were defeated but still alive. They managed to escape in a boat. 他们虽然被打败了，但是依然生机勃勃，终于设法乘船逃脱了。alive 表语形容词，“活的”;“有生气的”;“热闹的”;e.g. His grandpa is still alive. 他的爷爷还活着。 The young man looks alive. 小伙子看上去英气勃勃。The road is alive with lookers-on everywhere. 路上到处都是看热闹的人。

7. Hit the tin flat with a hammer. Then they will take up less space. 用锤子将罐头盒砸扁，这样它们占的地方就小了。take up 占用(时间);占据(空间);e.g. The desk takes up too much room. 这张课桌太占地方了。Visiting grandpa will take up the whole of Sunday. 看望爷爷会花去整个星期天的。John took up art while he was at school. 约翰在学校时开始学习艺术。 I’ll take up the text where I unfinished last class. 我将接着讲上节课没有讲完的课文。