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1、,Unit 5 Working the land,Review the whole unit,Goals,overcome vt. 克服；解决；战胜教材原句Yuan overcame enormous technical difficulties to develop the first hybrid rice.要点必记overcome problems解决问题overcome oneself战胜自己overcome despair摆脱绝望,核心词汇,alternative n. 可供选择的事物；adj. 可供替代的,教材原句 As an alternative, some farmers h
2、ave switched to organic farming.要点必记alternative method 替代的方法alternative approach 变换方法have no alternative but v. 别无选择；只得；唯一的办法是,generate vt. 产生；引起教材原句It is estimated that about 60 percent of domestic rice consumption in China is comprised of crops generated from Yuans hybrid strains.要点必记generate elec
3、tricity 发电generate profit 产生利润generate strategy制定策略,extension n. 扩大；扩建部分,教材原句 That were intended to one day become an extension of London Underground.要点必记vt. extend 延伸；扩大；推广；伸出；给予；使竭尽全力adj. extensive 广泛的；大量的 extended 延伸的；扩大的；长期的 extendable 可延长的；可展开的；可扩张的 adv. extensively 广阔地；广大地n. extensiveness 延伸；大
4、范围,instance n. 现实；事实,教材原句For instance, they may grow corn or wheat in a field one year.要点必记for instance 例如（for example; such as）in this instance 在此情况下at the instance of 在的请求下；经的提议；因的主张,depth 轮流；依次,教材原句Organic farmers also plan diverse crops that use different depths of soil to help keep it rich.要点必记
5、in depth 深入地；全面地in the depth of 在里面longlength widewidth highheight deepdepth,alleviate n. 现实；事实,教材原句What can people and countries do to help alleviate these causes?例句1. Nowadays, a great deal can be done to alleviate back pain.如今，很多方法可以被用来减轻背部疼痛。2. Their energies were focused on the alleviation of t
6、he refugees misery.他们把精力集中在了对难民苦难的减轻上。,in turn 轮流；依次,教材原句This affects the crops grown on the land, in turn, the animals and humans who digest them.要点必记take turns to do sth 轮流做某事by turns 轮流in return 作为回报in return for 作为对的回报,devote vt. 把献给； 专心于教材原句Indeed, his slim but strong body is just like that of
7、millions of Chinese farmers, to whom he has devoted his life.例句1. Considerable resources have been devoted to proving him a liar. 为了证明他是个骗子已投入了相当多的人力和财力。2. After her marriage, she couldnt devote herself totally to her music. 她结婚之后无法全力倾注于音乐。,【拓展】devoteto (doing) sth. 把致力于；专心于devote oneself to (doing)
8、 sth. 献身于；致力于devoted adj. 挚爱的；忠实的，忠诚的be devoted to 致力于devotion n. 奉献；关照；忠诚,shortage n. 缺少；不足,教材原句Farmers often had poor harvest and sometimes even had a serious shortage of food to eat.要点必记shortage of 缺少water shortage 缺水；水量不足；枯水food shortage 粮食短缺power shortage 电力短缺fund shortage 资金不足， 资金短缺,digest v.
9、消化；领会,教材原句This affects the crops grown on the land, in turn, the animals and humans who digest them.例句展示IhavehadtimetodigestwhathappenedSundaynightand whatitmeanstome.我需要一些时间来消化周日晚上发生了什么，它对我而言意味着什么。,要点必记adj. digestive消化的；助消化的 digestible易消化的；可摘要的n. digestion消化；领悟,convince v. 使相信；使确信；信服,教材原句Yuan was c
10、onvinced that the answer could be found in the creation of hybrid rice.要点必记adj. convinced 确信的；深信的 convincing 令人信服的；有说服力的convince sb. to do sth. 说服某人做某事convince sb. of sth. 使某人相信某事be convinced of 相信,Read and complete the passage with the correct forms of the words and phrases in the box. Then answer
11、the questions.attain be comprised of depth diverse essential for instance output soilJia Sixie was a government official from Shandong Province who conducted a lot of agricultural research in the sixth century. In his travels, he observed that some farmers had much better _ than others, so he decide
12、d to investigate the best ways of _ good harvests. After retiring, he wrote a book Qi Min Yao Shu, which _ sound advice and practices for people doing agriculture work.,output,attaining,is comprised of,In one piece of advice,_, he told fanners to clear weeds from the ground before planting crops. Th
13、ey could either let the animals eat the weeds or turn the_over so that the weeds were covered. Then he gave advice on ploughing, suggestingthat the autumn ploughing should be at a greater _ than the spring ploughing. He alsosuggested changing crops to get better harvests every year. Finally, he sugg
14、ested that farmers grow a _ range of crops next to each other in the fields. Although has been centuries since Jia Sixie died, Q Min Yao Shu is still considered a(n)_book in Chinas agricultural history.,for instance,soil,diverse,essential,depth,it is +done +that 从句,教材原句It is estimated that about 60
15、percent of domestic rice consumption is in china.要点必记it is +adj +that 从句 It is important to get along well with others.it is + n. +that 从句 It is a pity that he can not come to my birthday party.it is +done+that 从句 It is reported that the park has received one million visitors.,核心句式：,现在完成进行时,结构：have/
16、 has been doing sth.意义： 表示到现在为止已经完成，并且还会继续下去例句：He has been working as a doctor since he left school. (做医生这份工作会一直进行下去，不会到现在为止结束),核心句式：,和现在完成时的区别：have/ has done: 到现在为止已经完成，不会再继续He has finished his homework. (作业已经完成，不会再进行下去了),not onlybut also,要点必记1. not onlybut also就近原则连接两个主语时，要和与其最近的主语保持人称和数的一致。 如： No
17、t only Tom but also Alice and Mary are busy.不仅汤姆很忙，爱丽丝和玛丽也很忙,核心句式：,为了强调，可将not only置于句首，其后的句子通常要用部分倒装的形式。如:Not only has she been late three times, she has also done no work.她不仅仅迟到了3次，她还没干一点活。,as well as,要点必记当as well as连接两个成分作主语时,其后的谓语通常要与前面一个主语保持一致。如：E.g. Tom as well as his parents is going toLondon.
18、汤姆和他的父母要去伦敦。The captain, as well as the other players was tired.队长和其他队员都累了。,核心句式:,相似用法with; together with; along with; besides; but; except; including; rather thanE.g. Everyone including Mary and Tom is here.,主语从句,一、概念与类型主语从句在复合句中作主句的主语。例如:1. That she was chosen made us very happy. 她当选了使我们很高兴。2. Wha
19、t caused the accident is a complete mystery.是什么导致了这次事故还完全是一个谜。3. Whether she will come or not is still a question. 她是否来还是一个问题。,核心句式：,为了使句子结构平衡，避免“头重脚轻”，常用it作形式主语，而把从句放在后面。例如:1. It is a pity that she has made such a mistake. 她犯了这样一个错误，真是遗憾。2. It depends on the climate whether they are going shopping
20、today.他们是否今天去购物还得看天气。,Fill in the blanks with that, whether, or wh- question words.1 _the research centre is to be set up has not been decided.2 _many countries still face food shortages remains a big problem.3 _impressed me most was that the hybrid rice enabled farmers to expand their output greatl
21、y.4 _the plan is to be carried out still needs discussing.5 _the new chemical pesticide is effective remains to be seen.,Where,That,What,When,Whether,6 _will join in the research team will be announced tomorrow.7 _he quit his high-paying job is not difficult to understand. He wanted to start up his own business.,That,Who,THANKS,