高中英语外研版 (2019)选择性必修 第二册Unit 4 Breaking boundaries备课ppt课件

这是一份高中英语外研版 (2019)选择性必修 第二册Unit 4 Breaking boundaries备课ppt课件，共23页。

本课件主要内容安排
课件内容1. 单元构词扩展词汇2. 单元核心词汇讲解3. 单元专题语法讲解4. 单元重点句型讲解
单元构词扩展词汇
influential
单元重点短语
✭词汇一 assist v. 协助，帮助
◆教材原句 It assists peple based n need, regardless f which cuntry they are frm. 它根据人们的需要提供帮助，而不管他们来自哪个国家。◆要点必记 assist sb with sth 帮助某人做某事 assist sb t d sth 帮助某人做某事 assist sb in ding sth 帮助某人做某事 with the assistance f ... 在...帮助之下 be f great assistance 有帮助
1. I was wndering if yu culd assist me in ___________(write) the reprt abut teaching. 2. I'll need smene t assist me _________ wrkflw management. What's yur recmmendatin? 3. The advantage t us is that it can assist us ______________ (imprve) ur listening and ral skills.4. One f his fellw passengers came t his _____________(assist) when he fell t the flr. 5. She culdn't attend the meeting s her ___________(assist)tk her place.
assistance
✭词汇二 relieve v. 给某人换班；使减轻
◆教材原句 My missin was t relieve Emma, a Canadan specialist in infectius disease. 我的任务是接替艾玛，她是加拿大的传染病专家。◆要点必记 relieve sb f sth 使 某人解脱/拜托... relieve a guard 换岗 t ne's relief 使某人欣慰的是 in relief 如释重负，松了一口气◆考点呈现1. Yu'll _____________(relieve) at six 'clck and then yu can return hme. 2. The fficer invlved was relieved ________ his duties because he had vilated strict guidelines. 3. Nt until we succeed in letting wildlife live in peace, can we smile _______relief.
be relieved
✭词汇三 cmpensate v. 弥补，补偿
◆教材原句 This small but unexpected success cmpensated fr many ther less frtunate cases. 这个小小的但意外的成功弥补了许多其他不幸的案例。◆要点必记 cmpensatin 补偿（或赔偿）物；（尤指）赔偿金， claim/award/ cmpensatin 要求╱得到赔偿金 cmpensate fr sth 补偿；弥补 cmpensate sb fr sth 给（某人）赔偿（或赔款）◆考点呈现1. Nthing can cmpensate __________ the lss f a lved ne.2. Her lawyers say she shuld _________________(cmpensate) fr the suffering she had been caused.3. He received ne year's salary as cmpensatin ________ lss f ffice.
be cmpensated
✭词汇四 rewarding adj. 值得做的；意义的
◆教材原句 It was rewarding t see hw ur wrk helped ... frm different cultures. 看到我们的工作起了多大作用是很值得的……从不同的文化。◆要点必记 reward v. 奖励，回报， 酬谢； reward n. 奖励；回报；报酬 rewarding adj. 值得做的；意义的 reward sb fr sth 因…报答某人 reward sb with sth 以某物奖赏某人
1. Winning the match was just reward ________ the effrt the team had made. 2. She _______________ (reward) fr her effrts with a cash bnus.3. He rewarded us unselfishly __________ helping him.4. She started singing t the baby and was rewarded ________ a smile.5. It is ____________ (reward) t learn a freign language. 6. It is very rewarding __________ (hear) these stries and see the smiles n peple's faces.
was rewarded
✭词汇五 dedicate v. 致力于，献身于
◆教材原句 But in a larger sense, we can nt dedicate--we can nt cnsecrate-we can nt hallw this grund. 但是，从更广泛的意义上说，这块土地我们是不能够奉献、不能够圣化、不能够神化的。◆要点必记 dedicatin n. 奉献；献身； dedicate ... t... 把 用于... dedicate eself t... 专心于...; 致力于 be dedicated t ... 奉献于...; 从事于...◆考点呈现1. We are ready t dedicate ur yuth ______ the cnstructin f mtherland.2. The sciety was dedicated t ____________(further)the cause f wrld peace.3. He felt that the cause t _________ he culd dedicate himself was the mst imprtant cause in the wrld.
✭词汇六 influential adj. 有影响的
◆教材原句 Edgar Snw was an American jurnalist wh wrte inflential bks and articles abut China in the 1930s. 埃德加·斯诺是一位美国记者，在20世纪30年代撰写了有关中国的影响深远的书籍和文章。◆要点必记 influence v. 影响； n. 影响；作用； have a(n)... influence 对有影响； under the influence f 在...的影响之下 be inlfuential in sth/ in ding sth)
1. The cmmittee was influential in ____________(make) gvernment plicy n emplyment.2. The educatin I have received is__________ (influence) in frming my character.3. Van Ggh had a majr influence _________ the develpment f mdern painting.4. I believe anyne wh reads anther's writings must ____________ ( influence),t sme degree. 5. He is yur fan ______ yur newly-published nvel have had a great inflence upn.
influential
be influenced,
语法 it作形式主语
一. 概述： 形式主语it 并无实际语义，只是为满足语法上的需要，避免句子头重脚轻，它代替的是句子的逻辑主语。 二. 用法： it 作形式主语，主要分为下列三种情况:不定式作主语、动名词作主语 和 主语从句作主语。具体分析如下:1. 代指不定式，不定式真正主语后置；2. 代指动名词，动名词真正主语后置；3. 代指主语从句， 主语从句真正主语后置。
it作形式主语 拓展延伸
1. it 代替从句：用作动词lk, seem, appear, happen, ccur, fllw等的主语， 例如： ◎It lks as if ur schl team culd win the ftball match. ◎It curred t me that I had left my paper in the ffice. ◎Frm this witness, it fllws that he must accept respnsibility fr the mistake2. 固定句型如： It's said/ believed/ thught that-clause3. 习惯使用形式主语it代替动名词的句型： It's waste/ n use/ gd/ useless + ding sth.
1. It is n use _________ (cry) ver spilt milk.2. Was ________ pretty hard fr him t bring up the child n his wn.3. It is cnsidered n gd _________ (recite) withut understanding.4. In fact______is a hard jb fr the plice t keep rder in an imprtant ftball match. 5. It seems a pity ____________ (waste) the fd.6. _______ a pleasure it is t wrk with yu! 7. It is cmmn knwledge ______ the full mn brings fair weather.
单元重点句型
1. N wnder it isn't a surprise t see 怪不得看到并不意外。 【句型分析】 本句采用了省略形式，完整形式为： It's n wnder that-clause. 意为“不足为奇的是”; it作为形式主语，真正的主语从句后置。 【句型拓展】a. It's a wnder that -clause 令人惊奇的是 What a wnder it is (t d sth) 真是想不到！多令人惊奇！c. wnder wh-从句 想知道，对...感到奇怪；d. wnder if/whether -clause 不知道是否
理解应用
1. I will be away in a few days, and I wnder ____________ yu culd lk after my pet cat. 2. It is n wnder ________he knew s much abut it, fr he had made a thrugh investigatin.3. I wnder __________ it feels like t be in a kangar's puch(袋子)。 4. What a wnder ______ is t see s many rare wildlives in the area. 5. _______ is a wnder that yu recgnized me after all these years.
if/ whether
2. It is an indepedent, nn-prfit rganizatin whse missin is t prvide medical care t thse affected by cnflict, epidemics, disasters r a lack f access t health care. 它是一个独立的非盈利性组织，其使命是向那些受冲突、流行病、灾害或缺乏保健服务影响的人提供医疗服务。【句型分析】 划线部分为过去分词作后置定语，修饰thse, 相当于定语从句“that are affected by cnflict, epidemics, disasters r a lack f access t health care.”【句型拓展】a. 过去分词只表示状态，不表示被动情况，如fallen leaves; develped cuntries; biled water; the risen run; b. 过去分词作定语，表示被动或者已经完成, 如： deeply mved fans; newly-built huse; hme-made fd, the brken bicycle;
1. In that year, there were nly tw hundred cmputers _____________ (cnnect) t the Internet. 2. The envirnment challenges are significance but the effrts ___________ (make) by the gvernment seem t be paying ff. 3. Jin a _____________(guide) bike tur and view sme f the mst ppular mnuments, which is a gd chance fr yu. 4. The wrker has retired but he still remembers the gd time _________(spend) with his students. 5. Here is a pst card _________ (send) frm a far-way muntain schl.
3. Later, Emma intrduced me t sme f the thers wrking fr r alngside MSF... 后来，Emma把我介绍给了一些为无国界医生组织工作或与之并肩工作的人…【句型分析】 划线部分为现在分词作后置定语，它相当于定语从句“ wh/that were wrking fr r alnside MFS”. 修饰 the thers. 【句型拓展】a. 单个现在分词作定语常常放在被修饰的名词前面； b. 现在分词短语作后置定语，与被修饰的名词构成主动关系； c. 现在分词“being dne“ 表示被动动作而且正在进行。
1. This teaching building _____________ (build) nw is designed by a famus architect. 2. This teaching building __________ (build) last year cst ten millin yuan. 3. Students are prvided with breakfast and lunch, __________ (cntain) a sandwich, a drink and a prtin f dessert. 4. Thse __________ (assist) the teacher t clean the ffice are ready t take part in sme vluntary activites. 5. He is a tp student with different hbbies, ___________ (include) reading. drawing and playing vilin.
being built
cntaining
assisting
including