Some fish are forced to leave polluted water and are flying in the sky. But unfortunately, air is also so polluted that they have to wear masks. Each of them is crying, “Where is my home?” What a terrible sight!
Mankind has brought so much pollution. Waste is being poured into rivers and seas. Poisons to kill pests in farming and chemicals go into rivers and seas, too. Poisonous gasses from factories also make the air so dirty. The whole balance of nature is being destroyed as a result of our ignorance of the environmental protection.
Personally, man can not live alone on the earth. Should fish die from serious pollution, so would man! It is high time we did something to prevent such a scene from happening.
无论是承上、还是启下,抑或是承上启下,带来的好处都是使文章的结构严谨。
例如: 为什么我国的石拱桥会有这样光辉的成就呢?首先,在于我国劳动人民的勤劳和智慧。他们制作石料的工艺极 其精巧,能把石料切成整块大石碑,又能把石块雕刻成各中形象。在建筑技术上有很多创造,在起重吊装方面更有意想不到的办法。如福建漳州的江东桥,修建于八 百年前,有的石梁一块就有二百来吨重,究竟是怎样安装上去的,至今还不完全知道。其次,我国石拱桥的设计有优良传统,建成的桥,用料省,结构巧,强度高。 再其次,我国富有建筑用的各种石料,便于就地取材,这也为修造石桥提供了有利条件。
文中这个划线句子就是针对过渡句的结构作用出的试题。“这样辉煌的成就”概括了上文赵州桥的历史、结构、造型特点,具有承上作用,“为什么”这个疑问代词,概括了这一段的主要内容,所以具有启下的作用。
综上所述,在这个段落中,划线句子的作用就是:承上启下,上承接我国石拱桥取得的辉煌成就,下引出取得成就的原因,使文章架构严谨。
承上的几种类型中词或短语与上文的关系转为对下文的关系,则是启下。
High school is regarded as the best time in a person's life. As a senior three student, it won't take long before I graduate. Now, I have much to share with my fellow students.
高中被认为是一个人一生中最好的时间。作为一名三年级的学生,在我毕业前不需要很长时间。现在,我和我的同学们分享了很多。
Firstly, I would like to show my appreciation to those standing by me all the way, teachers, parents and friends included. Without their help and advice, my life would be different. Secondly, it's high time to say sorry to classmates whom I hurt or misunderstood. Communication and smiles act as bridges to friendship. Above all, I've made up my mind to make every effort to study, for I believe hard work is the key to success. Just as the old saying goes, "no pains, no gains."
首先,我想对我所有的方式,教师,家长和朋友包括我的赞赏。没有他们的帮助和建议,我的生活将是不同的。其次,是对我伤害或误解的同学说对不起的时候了。沟通和微笑是友谊的桥梁。最重要的是,我已经下决心要尽一切努力去学习,因为我相信努力工作是成功的关键。正如俗话所说:“没有痛苦,没有收获。”
Finally I hope that all the younger fellows can make full use of time, because time and tide wait for no men.
最后,我希望所有的年轻人都能充分利用时间,因为时间和时间等待任何人。
1.要指出句子运用的说明方法有哪些(不要遗漏)?
2.要指出运用这种说明方法说明的核心内容是什么?
3.要指出运用这种说明方法带来怎样的效果?
例如:那么,死海海水的浮力为什么这样大呢?因为海水的咸度很高。据统计,死海水里含有多种矿物质:135.46亿吨氯化钠(食盐);有63.7亿吨氯化钙;有20亿吨氯化钾;另外还有溴、锶等。把各种盐类加在一起,占死海全部海水的23%~25%。这样,就使海水的密度大于人体的密度,无怪乎人一到海里就自然漂起来,沉不下去。
1.运用的说明方法有:引资料、分类别、列数字;
2.主要说明了:死海的咸度高、浮力大。
3.效果
(1)引资料:突出材料的科学性、准确性,增强说服力;
(2)分类别:将死海中的矿物质分成若干种类一一说明,条理清晰,层次井然;
(3)列数字:准确具体。
整体答案就是:这句话运用引资料、分类别、列数字三种说明方法,说明了死海的咸度高、浮力大这一突出特点,说明过程引用材料、数据科学、准确、具体,增强了说服力,同时把复杂的内容说明得条理清晰,层次井然。
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