Unit 4 Information technology Lesson 3 词汇学案--高中英语北师大版(2019)必修第二册.docx
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1、Lesson3 New words 学案1.harm v.伤害n.损害;伤害【教材原句】Do you think the Internet helps or harms friendships?你认为网络是促进友谊还是伤害友谊?【归纳拓展】(1)do harm to sb/sth=do sb/sth harm对某人/物有害(2)harmful adj.有害的harmless adj.无害的be harmful/harmless to对有害/无害单句填空(1)Reading in bed will often do harm our eyes.(2)Air pollution is (harm)
2、 to our health.同义句转换/翻译句子背诵(3)Staying up constantly can harm your health.Staying up constantly can your health.(4) I think this plan will do more harm than good.(英译汉)2. argument n.论点;论据;争吵,争辩【教材原句】Identify one sentence for each argument that states this general idea.为每一个论点确定一个陈述这一基本观点的句子。【归纳拓展】(1)ha
3、ve an argument with sb和某人争吵heated argument激烈的争论win/lose an argument说得过/说不过(2)argue v.争论;争吵;争辩argue with sb about/over sth与某人就某事进行争论argue for/against sth支持/反对某事单句填空(1)His (argue) was that public spending must be reduced.(2)He argued smoking because he thought that it was(harm) to health.(3)They were
4、having an argument the waiter about the bill.完成句子背诵(4)这是反对吸烟的有利证据。This is against smoking.(5)经过一番激烈的争论,最终做出了决定。After some a decision was finally made.3. replace v.取代;接替;放回原处【教材原句】Firstly,talking online is no replacement for face-to-face contact images really cannot replace a real-life smile or hug.首
5、先,网上聊天不能取代面对面交流;图像真的无法取代现实生活中的微笑或拥抱。【归纳拓展】(1)replace.with/by.用替换be replaced with/by被取代(2)replacement n.替换;替代品;替代人单句填空(1)It is still under discussion whether the old bus station should (replace) with a modern hotel or not.(2)They have replaced physical labour robots.(3)As Jack is ill,we have to get a
6、 (replace) for him.完成/翻译句子背诵(4)课堂上电脑永远不会取代老师。Teachers will never computers in the classroom.4. concentrate v.专注,专心;集中注意力【教材原句】According to a parenting expert,Denise Daniels, communicating through a screen makes it more difficult for children to concentrate or show kindness to others.据育儿专家丹尼斯丹尼尔斯说,通过
7、屏幕交流会使儿童更难集中注意力或对他人表示善意。【归纳拓展】(1)concentrate on集中精力于concentrate ones attention/efforts/thoughts on 将某人的注意力/努力/思绪集中于(2)concentration n.专心;专注;注意力单句填空(1)You need a lot of (concentrate) to solve the problem.(2)He sat there,with his attention (concentrate) on the blackboard.(3)I decided to concentrate al
8、l my efforts on (find) somewhere to live.(4)You should concentrate passing these exams.Then you can have a good rest.(5)The silence can increase your ability (concentrate).5.rewarding adj.有益的;有意义的【教材原句】.though we know that the number of “likes” or followers cannot compare to having long-term and rew
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