英语选修8人教版：Unit 5 Meeting your ancestors 学案(新人教版选修8)

Unit 5 Meeting your ancestors核心单词1. alternativen.可供选择的事物；（两者或以上）可能的选择adj. 供选择的, 二选一的常用结构：h ave no alternative but to do sth.只能做某事；除¡­¡­外别无选择We have no alternative but to go on.除了继续下去,我们别无选择。

There was no other alternative but to fight till the victory.除了战斗到胜利,别无选择。

联想拓展：alternatively adv. 或者，二者择一地alternate vt. 使交替；vi.交替；adj. 交替的；轮流的高手过招：(1)单项填空In this school, the students have three courses, and seven courses.A. required; alternativeB. requiring; alternativeC. required; alternateD. requiring; alternate解析：选A。

require(尤指根据法规) 规定、需要，此处用过去分词required修饰courses，因为两者之间为被动关系。

后空意思为¡°选择，选其一¡±，alternative符合句意。

(2)单句改错①I had no alternative but report him to the police.②You have the alternative to speaking or keeping quiet.③Tom and Harry do the work on alternative days.答案：①report前加to ②to→of③alternative→ alternate2. arrestvt. 逮捕，拘留，吸引(注意)n.[C]逮捕常用结构：be arrested for sth. 因某事而被捕arrest one s attention吸引某人的注意under arrest被捕；被拘留The criminal was arrested yesterday.那名罪犯昨天被捕了。

What she did arrested my attention. 她所做的吸引了我的注意力。

高手过招用适当的介词或arrest 的适当形式填空①I got arrested careless driving.②Her uncle was arrest, but nobody knew the rea son.③Five youths in connection with the attack.④The public applauded the of the criminal suspect.答案：①for ②under ③were arrested ④arrest3. preservev.保护,维持,保存常用结构：preserve sth. from 使¡­¡­免遭¡­¡­You can preserve meat or fish in salt.你可以用盐保存肉或鱼。

It is one of the duties of the police to preserve public order.警察的职责之一是维持公共秩序。

联想拓展：preservable adj. 可保存的preservation n. 保存preserver n. 保护者，保存者易混辨析：preserve/conserve/reserve/protectpreserve v. 保护，维持，保存；conserve v.保存，保护，强调珍惜；reserve v. 指意见、看法的保留或座位的预定；protect v. 保护，强调使其免受破坏或损害。

高手过招(1)单项填空①In spite of failing to save every endangered species, we may preserve the majority extinction.A. AgainstB. withC. beyondD. from②It is the duty of the police to social order.A. SaveB.reserveC.preserveD. rescue①解析：选D。

preserve sth. from 使¡­¡­免遭¡­¡­，符合句意。

②解析：选C。

A、D两项都意为¡°拯救¡±；B项意为¡°保留，保存¡±；C项意为¡°保护，维持¡±。

根据句意可知，选C。

(2)完成句子①夏天收获的大量水果可冷藏或装瓶加以保存。

In the summer, large crops of fruit may by freezing or bottling.②我认为这些有趣的旧习俗应该保存下去。

I think these interesting old customs .答案：①be preserved②should be preserved4. reliefn.减轻，解除常用结构：bring /seek/find/giv e/feel relief带来/寻求/找到/予以/感到解脱much to one s relief=to one s great relief使某人宽慰的是¡­¡­relief road 备用车道relief map 地形图I felt great relief when I heard I had passed the examination.当听到已经通过考试时，我感到轻松了许多。

联想拓展：relieve one s feelings 发泄感情relieve sb. of 使某人解除The minister was relieved of his post.部长被解除了职务。

高手过招：单项填空Hearing the news that her son was found, she breathed a sigh of .A.excitementB. joyC. reliefD. belief解析：选C。

按照句意此处为¡°减轻忧虑，松了一口气¡±，C项符合句意。

5. assumevt. 设想，假定；主观认为；装出¡­¡­的样子常用结构：assume sb./sth. to be 假定/认为某人/事是¡­¡­We assumed that you understood the situation.我们认为你了解形势。

He assumed a well informed manner but in fact he knows very little. 他装出一副见多识广的样子，而实际上他知之甚少。

联想拓展：assumed adj.假装的，假的；假定的，设想的an assumed result假定的结果assuming adj.自负的，傲慢的，过分自信的；conj. 假如 (后跟从句)assumption n. 假定，设想His look of astonishment was assumed.他那惊讶的样子是装出来的。

He is too assuming in this attitude about the energy supply.他在对待能源问题的态度上显得过于自信。

Assuming that the weather is favourable, farmers will have a bumper harvest. 假如风调雨顺，今年农民将获丰收。

高手过招完成句子①假如今天下午下雨我们该怎么办呢？this afternoon, what shall we do?②在证实他有罪之前我们必须要假定他是清白的。

We innocent until he is proved guilty. 答案：①Assuming it rains②must assume him to be6. somehowadv. 不知怎么地；以¡­¡­方式常用结构：somehow or other不知是什么原因；由于某种原因；以某种方式Somehow or other we became friends, I never knew just why it was.不知何故我们成了朋友，我绝不知道为什么会这样。

易混辨析：anyhow/somehow/somewhatanyhow 意为¡°无论如何¡±，相当于 anyway；at any rate；somehow 意为¡°以某种方式(in some way or other)¡±或¡°由于某种原因¡±；s omewhat 意为¡°从某种意义上讲；有几分¡±，相当于 in a way, rather。

I always know I d get the job, somehow.也不知为什么，我总觉得能得到那份工作。

Somehow we must get to Glasgow.我们得设法到格拉斯哥去。

He could have finished it on schedule, but somehow he fell behind.他原本能按预定进度做完这件事的，但不知怎么却落后了。

I am somewhat tired of this book. 我对这本书有点厌烦。

高手过招选词填空(somehow/anyhow/somewhat）①We must get the work finished or other by tomorrow morning.②It may rain, but I shall go out， I don t min d the rain.③The price was higher than I¡¯d expected.答案：①somehow②anyhow③somewhat重点短语7. regardless ofadj. 不管, 不顾People should be hired regardless of race and sex.雇用人员应没有种族、性别的差异。