12-26 23:27:47 浏览次数:585次 栏目:高二英语
1) species
▲ species意为"种""类"。单复数同形,主要指生物学上有相同特征的动植物品种、种类。如:① The agri- cultural extort has developed a productive species of rice.这个农业专家培育出一种高产水稻品种。② Pandas are an endangered species.熊猫是一种濒临灭绝的动物。③ Some species of animals have become extinct because they could not adapt to a changing environment.有一些动物已经灭绝了,因为它们不能适应环境的变化。
【注】species可用来表示"人类"。如:① The use of nuclear weapons is a horrible threat to the species. 核武器的使用对人类是一个严重的威胁。② The protection of our environment will benefit the human species.保护环境有益于全人类。
【注】 species在口语中表示"种类",相当于a kind,a type,a sort。如:① Various species of business advertise- ments on the television sometimes make TV programs rather dull. 电视上五花八门的商业广告有时使电视节目十分乏味。②A strange species of car attracted the attention of people.一种形状奇特的轿车引起了人们的注意。
【注】英语中还有specie这个词,不要把它误认为是species的单数, 这是两个完全不同的词。specie意为"硬币"。
2) yet在肯定句中的意思和用法。
▲yet一般用于否定句和疑问句,意为"还""已经"。如: ① I don't want to go away yet.我现在还不想离开。② The moon had not yet risen.月亮还没有升起。③ I wonder if she's started yet.不知她开始了没有。
▲在个别情况下yet也可用在肯定句中,意为"还""又"。如:① It was too early yet to tell anything. 现在要说什么还为时过早。② I have a few more pages to read yet. 我还有几页书要看。③ Much yet remains to be done. 还有很多事等着去做。
▲yet可用来表示将来还可能发生某事,意为"迟早""终归"。如: ① The plan may yet succeed. 这个计划还可能成功。 ②It will be colder yet before spring comes. 春天到来之前还可能更冷一些。③ The thief will be caught yet.小偷迟早会被抓住的。
▲yet可作连词用,意为"但是""然而"。如:①Jane said she Was ill, yet I saw her in the street just now. 简说她病了,但我刚才还看到她在街上。② I gave him all he asked for,yet he is still not satisfied. 我给了他所要的一切,但是他仍然不满意。
▲yet也可以和and连用,表示"但是"。如:He's plea- sant enough, and yet I don't like him. 他够招人喜欢的,但我不喜欢他。
【注】still,already和yet都有"还""仍然"之意,但是有差别。still暗示对某事件持续时间比预料的长而感到惊讶。如:The coffee is still hot. (咖啡还是热的。) already用于表达对某事物发生时间比预料的时间早而感到惊讶。如:The coffee is cold already.(咖啡已经凉了。) yet一般用于否定句和疑问句中,在正式语体中有时可代替still。如:I have still/yet to hear the truth. (我仍然未被告知真相。)
10. Life in the ocean ranges from the tiniest plankton all the way up to giants like sharks and whales.海洋里的生物中从微小的浮游生物到巨大的动物如鲨鱼和鲸鱼都有。(p.19 第一段 第5-6行)
▲range在本单元中作不及物动词用,意为"在一定范围、幅度内变动"。range的此种用法无进行时态,常与介词from...to...或between连用。如:① Sentences today range from 5 or 6 words to 70, with the majority not far from 20. 现在的句子长度从五、六个词到七十个词不等。不过大多数句子的长度在二十个字左右。② His interests ranged from chess to surfing. 他的爱好从下棋到冲浪,无所不有。③ Their ages ranged from 25 to 50. 他们的年龄在二十五岁到五十岁之间。④ The temperature ranges between 0℃and 30℃.气温在摄氏零度到30度之间。
* range后接介词over时表示"漫游..." "涉及""包括"。如:①We ranged over the hills and valleys. 我们在山上和山谷中漫游。② Our conversation ranged over many topics. 我们的谈话涉及许多话题。
【注】range 作"漫游"解释时,可作为及物动词用。如:He spent the summer ranging the countryside. 他在乡间漫游,度过了夏天。
▲ all the way意为"一直""始终",也可以用the whole way。如:① There being no bus, he had to walk all the way home. 没有公共汽车,他不得不一直步行到家。② I'll support him all the way whatever happens. 不管发生什么事,我将始终支持他。③ The dog has been with me all the way. 这条狗一直跟着我。
▲ up to此处是与from连用的。up to单独使用时有"直到""至多"之 意。如:① It could be up to two years before the project is completed.可能需要两年时间这项工程才能完成。② She was here up to a few minutes ago. 她直到数分钟前还在这里。③ Our minibus can hold up to eight people. 我们的小车能容纳8人。④ Up to now I've never met him. 一直到现在,我还没见过他。
【注】up to有很多意思,常见的还有"忙于...""由......决定、负责"。如:① What have you been up to all day while I've been busy? 我整天忙着的时候你在干什么? ② Go and see what these girls are up to.去看看这些女孩子在干什么。③ It's up to you whether you decide t0 take the job. 要不要这份工作由你自己决定。④ It's up to you to break the news to him. 该由你把这消息告诉他。
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,高二英语下知识点总复习教案