北师大版 (2019)选择性必修 第四册Lesson 2 Aha Moment课堂教学ppt课件

这是一份北师大版 (2019)选择性必修 第四册Lesson 2 Aha Moment课堂教学ppt课件，共52页。PPT课件主要包含了课前自主预习，¤重点单词，¤重点词块，¤重点句式，课堂新知讲练，◇词汇拓讲，语言提升，归纳拓展，易混辨析，◇句式解读等内容，欢迎下载使用。

1．emerge vi. __________________2．clueless adj. __________________________3．evaluatin n.__________________
　出现，浮现　　一无所知的，一窍不通的　评估，评价　
1．想起_____________________2．突然_____________________3．对……很激动__________________4．导致__________________5．浪费时间__________________
fly/cme t ne’s mind　all at nce/all f a sudden　be excited abut…　lead t　a waste f time　
6．在……的阶段__________________7．偶然__________________8．被卷入；涉及__________________9．bury neself in…__________________10．can’t help ding sth.__________________11．walk arund__________________12．write ut__________________
at the stage f…　by incident　becme invlved in　专心致志于……　情不自禁做某事　溜达；闲逛　写出　
1．(P112)Then yu __________________(情不自禁大叫): “Aha! That’s it！” (can’t help ding sth. )2．(P113)____________(在你深入一个领域后), yu d nthing. (after引导的时间状语)【答案】1．can’t help shuting ut2．After yu deeply becme invlved in an area
1．emerge vi. 出现，浮现(P112)Why d sme peple wrk s hard but achieve very little, while sme thers seem t d nthing but gd ideas emerge?【翻译】为什么有些人努力工作却收获寥寥，而有些人似乎什么也没做却好点子层出不穷？
emerge　vi. 浮现；出现；出来；幸存下来；变得显眼；被知晓；暴露；恢复过来；破壳而出过去式：emerged过去分词：emerged现在分词：emerging第三人称单数：emerges
Richard was waiting utside the dr as she emerged. 当她出现的时候，理查德正等候在门外。The yacht will emerge frm the yard with her riginal rig. 游艇将以独特的帆装从造船厂驶出。She then emerged frm the curthuse t thank her supprters. 然后她从法院大楼出来向支持者们表示感谢。
emerge还可以表示“摆脱；显露；兴起；立足成为”等意思。What happens when new players emerge?当新的参与者出现时，会发生什么呢？
It sn emerged that neither the July nr August mrtgage payment had been cllected. 很快显示的是7月和8月的抵押款都没有被收取。Vietnam has emerged as the wrld’s third-biggest rice exprter. 越南已立足成为世界第三大稻米出口国。
emerging adj. 走向成熟的；新兴的Asia’s emerging ecnmies will be n a self-sustaining cycle f grwth. 亚洲的新兴经济体会出现自我维持的循环增长。The televisin screens f the next century will be linked up t an emerging wrld telecmmunicatins grid. 下个世纪的电视屏幕将与一种新兴的世界电信网格相连。
emergence n.出现，浮现；发生；露头What is the custm and usage in this emergence? 这里出现的习俗和用法是什么？Freedm was threatened in early mdern times by the emergence f mnarchies that might have been able t crush it. 在近代早期，君主制度的出现对自由构成威胁，并有可能摧毁它。emergent adj. 新兴的；处于发展初期的；[生]露头的，突出的
emerging market 新兴市场emerging ecnmies 新兴经济emerging industry新兴产业；新兴行业
appear, shw, emerge, lm这组词都有“出现”的意思，其区别是：appear 强调公开露面，被看见。shw 语气较强，强调“露出来”。emerge 侧重缓缓出现的过程。lm 指朦胧出现，好像从雾中浮现出来一样。
【针对练习】单句语法填空(1)Many ____________(emerge) natins gt back t their pre-crisis levels f utput in 2009．(2)They prefer t wait fr the ____________(emerge)f a new physics thery f everything. (3)Mdern linguistics ____________(emerge)as a distinct field in the nineteenth century. 【答案】(1)emerging　(2)emergence　(3)emerged
完成句子(4)S hw did Japan finally _____________ its banking crisis?那么日本最终是如何度过银行业危机的呢？(5)With the rapid develpment f China’s ecnmy, express presents great vitality as ________________. 随着我国经济的飞速发展，快递业作为一个新兴产业展现出了蓬勃生机。【答案】(4)emerge frm　(5)an emerging industry
(6)Language emerges and develps with the ___________ _______ f sciety. 语言是随着社会的产生而产生，随着社会的发展而发展的。(7)The result wuld be a mre balanced recvery in America and the ________________. 结果是在美国和新兴经济体中出现更加平衡的经济复苏。【答案】(6)emergence and develpment(7)emerging ecnmies
2．evaluatin n.评估，评价(P113)The third stage is called “evaluatin”．【翻译】第三个阶段被称之为“评估”。【语言提升】
evaluatin 评价；估价；赋值；估计价值(复数形式为evaluatins)
The writer discusses the evaluatin f evidential matter in tw ways. 作者从两方面讨论了证据评估。Usually, ur teachers ften give sme evaluatin n us accrding t the perfrmance in their eyes. 通常，我们老师经常根据在他们眼中我们的表现来对我们作出评价。
The Chinese peple’s evaluatin f Ca Ca mainly cmes frm the Rmance f the Three Kingdms by Lu Guanzhng nvelist Lu Guanzhng. 国人对曹操的评价主要源于明代小说家罗贯中所著的《三国演义》。evaluate vt. 评价；估价；求……的值　vi. 评价；估价(过去式：evaluated，过去分词：evaluated，现在分词：evaluating，第三人称单数：evaluates)
Dn’t evaluate peple by their clthes. 不要根据衣着来评价人。The market situatin is difficult t evaluate. 市场形势难以评估。On February 19, cmmittee f teachers will evaluate materials and give pinins. 在2月19日，教师委员会将对材料进行评估并提出意见。
【针对练习】单句语法填空(1)He gt a gd __________(evaluate)．(2)First, assist him in __________(evaluate) his life. 【答案】(1)evaluatin　(2)evaluating
完成句子(3)We __________________ hw well the plicy is wrking. 我们需要对这一政策产生的效果作出评价。(4)The way the guests were treated in the htel influenced ______________ the service. 客人在酒店受到的待遇影响了他们对服务的评价。【答案】(3)need t evaluate　(4)their evaluatin f
(5)Writing dwn yur prgress allws yu ____________ ______ yur wrk. 写下你的进度可以让你客观地评估你的工作。【答案】(5)t bjectively evaluate
1．(P112)Then yu can’t help shuting ut: “Aha! That’s it！”【翻译】然后你情不自禁地大喊：“哈哈，就是它！”【句式剖析】can’t help ding sth. 为固定结构，意为“情不自禁，忍不住做某事”。
【句式提升】can’t help (ding)　不禁，忍不住，无法控制通俗点讲，can’t help (ding)是指看到某物而想起了什么，睹物生情，或是受到某事物刺激而引起了另外一个动作。She culdn’t help smiling. 她禁不住笑了起来。I can’t help feeling srry fr the pr man. 我不禁为这个可怜的男人感到难过。
She is a very selfish wman, but smehw yu can’t help liking her. 她是个自私的女人，但是你都忍不住喜欢她。请注意此句式与can’t help t d sth. 的区别：She can’t help t clean the huse because she’s busy making a cake. 因为她忙于做蛋糕，所以她不能帮忙打扫房子的卫生。
can’t help t d sth. 意为“不能帮助做某事”。—Lk at these dirty clthes. ——你看看这些脏衣服。—Srry, dear. I can’t help (t)wash them because I have t g t wrk tday. ——对不起，亲爱的，我因为今天要上班，不能帮你洗衣服了。
在实际使用中，有时还可以用can’t help sb. ding sth. 结构，表示“不能使某人不做某事”。如：I culdn’t help him saying that. 我不能让他不这样说。She culd nt help the tears f rage rlling dwn her face. 她止不住她愤怒的眼泪顺着面颊流下来。
【针对练习】单句语法填空(1)She culdn’t help ________(envy)Helen. (2)While shpping, peple smetimes can’t help ___________ (persuade)int buying smething they dn’t really need. 【答案】(1)envying　(2)being persuaded
完成句子(3)Whenever I hear the stry, I __________. 我不管何时听到这个故事，都忍不住要哭。(4)We ____________ by their zeal. 我们不由得被他们的热情感动。【答案】(3)can’t help crying(4)cannt help being mved
(5)We ____________ us just nw. 刚才我们无法让他们不看到我们。(6)I ____________ her accident. 我总忍不住想起她的那起事故。(7)She ____________ the cnversatin at that time. 在那时，她忍不住偷听对话。【答案】(5)culdn’t help them seeing(6)can’t help thinking abut(7)culdn’t help verhearing
2．(P113)After yu deeply becme invlved in an area, yu d nthing. 【翻译】在你深入一个领域后，你什么都不做。【句式剖析】“After yu deeply becme invlved in an area”是after引导的时间状语。
【句式提升】(1)after的意思是“在……之后”，引导时间状语从句时的常见用法如下：①遵循“主将从现”的原则He will g t Beijing t wrk after he graduates frm the university. 他大学毕业后将去北京工作。
②从句表示的动作发生在主句动作之前，如果强调从句的动作发生在前，从句时态要用过去完成时，主句用一般过去时。He went ut fr a walk after he had finished the wrk. 他完成这项工作后出去散步。从句表示的动作发生在主句动作之前，如不强调动作的先后，主句和从句均用一般过去时。He went t bed after he finished his hmewrk last night. 昨晚他完成家庭作业后就上床睡觉了。
(2)when, befre, after引导时间状语的区别：①when引导时间状语从句时表示“当……的时候”，when既可以指时间段也可指时间点，从句中既可用延续性动词又可用非延续性动词，且动作既可和主句的动作同时发生又可在主句的动作之前或之后发生。注意体会如下例句：
I’ll call yu when I get there. 我一到那里就给你打电话。When the wind blws, all the drs rattle. 只要风一吹，所有的门就吱嘎作响。He stpped trying, when he might have succeeded next time. 他不再试了，其实他可能下一次就会成功。When I came hme, my wife was cking dinner. 我回家时，妻子正在做晚饭。
②befre引导时间状语从句时表示主句的动作发生在从句动作之前。See me befre yu leave. 在你离开之前来见我。Befre they drive any f the buses, they will have t pass a special test. 在驾驶公共汽车之前，他们必须通过专门测验。
③after引导时间状语从句时表示主句的动作发生在从句动作之后。I saw them after I arrived. 在我抵达之后，我见到了他们。I fund his pen after he has left. 在他走后，我找到了他的笔。
【针对练习】完成句子(1)It will be fur days ________________. 他们要过四天才能回来。(2)Einstein almst kncked me dwn _______________. 爱因斯坦几乎把我撞倒才看到我。
【答案】(1)befre they cme back(2)befre he saw me
(3)My father had left fr Canada just ____________________. 我父亲恰好在信到之前去加拿大了。(4)They had nt been married fr fur mnths _______. 他们结婚还不到四个月就离婚了。(5)_______________，please let me knw what yu decide. 你仔细考虑过以后，告诉我你的决定。
【答案】(3)befre the letter arrived　(4)befre they were divrced(5)After yu think it ver
(6)____________________，we went hme. 完成工作之后，我们回家了。(7)Yu’ll feel better ________________. 吃完这些药丸后你会感到好一些。【答案】(6)After we had finished the wrk(7)after yu take the pills
一、单词拼写1．Sftware is different because it is an ________(新兴的) reality. 2．He’s cmpletely __________(一窍不通的)abut cmputers. 3．Hw will this affect yur next perfrmance ________(评估)? 【答案】1．emerging　2．clueless　3．evaluatin
4．Authentic Italian cking is very healthy—witness the lw __________(发生率) f heart disease in Italy. 5．The __________(潜伏)perid lasts apprximately 10—14 days after cntact. 【答案】4．incidence　5．incubatin
二、单句语法填空1．We saw the __________(emerge)f flight search engines such as Kayak and Skyscanner. 2．But ften what’s alike in bth managers and staffers is a __________(clueless)abut the ingredients fr success. 【答案】1．emergence　2．cluelessness
3．The market situatin is difficult t __________ (evaluatin)．4．They lay eggs that __________(incubatin)thrugh the winter. 【答案】 3．evaluate　4．incubate
三、完成句子1．All rivers _____________ the sea. 百川归海。2．______________ she didn’t lk sleepy any mre. 突然她看上去不再瞌睡了。【答案】1．flw int　2．All f a sudden
3．Teenagers are still ________________ learning t tell right frm wrng, s they might make mistakes smetimes. 青少年仍处于学习辨是非的阶段，所以有时候他们会犯错。4．With ______________ I realised what the dream meant. 我突然明白了这个梦意味着什么。【答案】3．at the stage f　4．a flash f insight