电子商务英语-E-Commerce-English-PPT-课件-Unit-9.ppt（无音视频）

1、May 29, 20221Unit 9 Search Engine May 29, 20222 Warm-up Background Information Word Study &Text Analysis ExercisesMay 29, 20223Warm-upThree famous search engines are as follows: Which one of the search engines impressed you most? Why?List other search engines which you are familiar with. May 29, 202

2、24Background Information SEO (search engine optimization)即搜索引擎优化，即搜索引擎优化，主要是通过对网站的结构和内容等方面的优化，使搜索主要是通过对网站的结构和内容等方面的优化，使搜索引擎更容易搜索网站的引擎更容易搜索网站的内容，并且使网站的各内容，并且使网站的各个网页在搜索引擎中获个网页在搜索引擎中获得较高的评分，从而获得较高的评分，从而获得较好的排名。从事这得较好的排名。从事这方面工作的人就是方面工作的人就是search engine optimizer，即搜索，即搜索引擎优化师。引擎优化师。 May 29, 20225The li

3、fe span of a Google query normally lasts less than half a second, yet involves a number of different steps that must be completed before results can be delivered to a person seeking information. The main steps are as follows: Background InformationMay 29, 20226Text Analysis Potential customers find

4、Web sites in many different ways. Some site visitors are recommended by friends, some are referred by other Web sites, some see the sites URL in a print advertisement or on television, and others arrive after typing a URL that is similar to the companys name. (译文译文) But many site visitors are guided

5、 to the site by a search engine. May 29, 20227Text AnalysisPrinciples of Search Engine A search engine is a Web site that helps people to find things on the Web. It contains three major parts. The first part, called a spider, a crawler, or a robot, is a program that automatically searches the Web to

6、 find Web pages that might be interesting to people 1. When the spider finds a Web page that might interest search engine site visitors, it collects the URL of the page and some information contained on the page. (译文译文) The information might include the pages title, key words included in the pages t

7、ext and information about other pages on that Web site. May 29, 20228Text Analysis The spider returns the information to the second part of the search engine called index to be stored 2. The index checks to see whether the information about the Web page has already been stored. If it has, the index

8、compares the stored information with the new information and determines whether to update the stored information or not. The index is designed to allow fast search of its large amount of stored information. (译译文文) May 29, 20229Text Analysis The third part of the search engine is the search utility.

9、Visitors to the search engine site provide search terms, and the search utility takes those terms and finds entries for Web pages in its index that match those search terms. (译文译文) The search utility is a program that creates a Web page of a list of links to URLs found in its index that match the si

10、te visitors search terms. 3 The visitor can then click the links to visit those sites. May 29, 202210Text AnalysisSearch Engine Optimization The combined technology and strategy of having a particular URL listed near the top of search results is called search engine optimization (SEO). (译文译文) For si

11、tes that obtain most of their visitors from search engines, a high ranking which places their URLs near the top of the list of links returned by the search engine is extremely important. The content and design of a Web site are very important to SEO. In addition, an increasing number of search engin

12、e sites offer companies paid positioning which is the option of purchasing a top listing on search result pages for a particular set of search terms. (译文译文) May 29, 202211Text Analysis Search engine optimization is a complex subject. A number of consulting firms do nothing but advise companies on it

13、. Plenty of books have been written on this subject, and several major conferences are devoted to this subject each year. (译文译文) May 29, 202212The Key to Exercises: Reading comprehension 1 (1)F (2) T (3) F (4) F (5) TMay 29, 202213The Key to Exercises: Reading comprehension 2 (1) Some site visitors

14、are recommended by friends, some are referred by other Web sites, some see the sites URL in a print advertisement or on television, others arrive after typing a URL that is similar to the companys name. But many site visitors are guided to the site by a search engine. (2) A search engine contains a

15、spider, an index and a search utility May 29, 202214The Key to Exercises: Reading comprehension 2(3) The information might include the pages title, key words included in the pages text and information about other pages on that Web site.(4) The combined technology and strategy of having a particular

16、URL listed near the top of search results is called search engine optimization.(5) For sites that obtain most of their visitors from search engines, search engine optimization is very important.May 29, 202215The Key to Exercises: Vocabulary A5 B2 C3 D6 E7 F1 G4May 29, 202216The Key to Exercises: Tra

17、nslation 1 (1) 有些访问者是朋友推荐来的，有些是其它网站推荐来有些访问者是朋友推荐来的，有些是其它网站推荐来的，有些是看到了印刷广告或电视上公司的网址，有些是的，有些是看到了印刷广告或电视上公司的网址，有些是直接输入了类似公司名称的网址找来的。直接输入了类似公司名称的网址找来的。(2) 当网络蜘蛛找到搜索引擎访问者可能感兴趣的内容时，当网络蜘蛛找到搜索引擎访问者可能感兴趣的内容时，它就收集页面的它就收集页面的URL和页面上的信息。和页面上的信息。(3) 越来越多的搜索引擎网站提供付费搜索引擎排名服务，越来越多的搜索引擎网站提供付费搜索引擎排名服务，即企业购买特定关键词从而在搜索结

18、果页面中排名靠前。即企业购买特定关键词从而在搜索结果页面中排名靠前。(4) 有很多专门论述该专题的书，每年还有几次针对该专有很多专门论述该专题的书，每年还有几次针对该专题而举办的大型会议。题而举办的大型会议。 May 29, 202217The Key to Exercises: Translation 2(1) find Web sites in many different ways(2) be guided to the site by a search engine(3) automatically search the Web(4) information about other p

19、ages on that Web site(5) compare the stored information with the new information(6) fast search of large amount of stored information(7) find entries for Web pages in the index that match those search terms(8) click the links to visit those sites(9) near the top of search results(10) do nothing but

20、advise companies on SEOMay 29, 202218The Key to Exercises: Reading Material 1.B 2.A 3.D 4.C 5.CMay 29, 202219Word Studyautomaticallyadv. 自动地自动地The new monitor apparatus is automatically controlled.这套新的监护仪是自动控制的。这套新的监护仪是自动控制的。 May 29, 202220 Some site visitors are recommended by friends, some are ref

21、erred by other Web sites, some see the sites URL in a print advertisement or on television, and others arrive after typing a URL that is similar to the companys name. 有些访问者是朋友推荐来的，有些是其它网站推荐有些访问者是朋友推荐来的，有些是其它网站推荐来的，有些是看到了印刷广告或电视上公司的网址，有来的，有些是看到了印刷广告或电视上公司的网址，有些是直接输入了类似公司名称的网址找来的。些是直接输入了类似公司名称的网址找来的。

22、May 29, 202221 When the spider finds a Web page that might interest search engine site visitors, it collects the URL of the page and some information contained on the page. 当网络蜘蛛找到搜索引擎访问者可能感兴趣的内容当网络蜘蛛找到搜索引擎访问者可能感兴趣的内容时，它就收集页面的时，它就收集页面的URL和页面上的信息。和页面上的信息。 May 29, 202222 The index is designed to allow

23、 fast search of its large amount of stored information. 索引程序的作用是索引程序的作用是对存储的大量信息进行快速检索对存储的大量信息进行快速检索。 May 29, 202223 Visitors to the search engine site provide search terms, and the search utility takes those terms and finds entries for Web pages in its index that match those search terms. 当搜索引擎网站的访

24、问者输入搜索条件时，搜索工当搜索引擎网站的访问者输入搜索条件时，搜索工具就具就从索引里找到与搜索条件相匹配的页面条目从索引里找到与搜索条件相匹配的页面条目。 May 29, 202224 The combined technology and strategy of having a particular URL listed near the top of search results is called search engine optimization (SEO). 使特定使特定URL地址出现地址出现在搜索结果中靠前部分的在搜索结果中靠前部分的技术技术和策略称为搜索引擎优化和策略称为搜

25、索引擎优化(SEO)。 May 29, 202225 In addition, an increasing number of search engine sites offer companies paid positioning which is the option of purchasing a top listing on search result pages for a particular set of search terms. 此外，越来越多的搜索引擎网站提供付费搜索引擎此外，越来越多的搜索引擎网站提供付费搜索引擎排名服务，即企业购买特定关键词从而在搜索结果页面排名服务，即企业购买特定关键词从而在搜索结果页面中排名靠前。中排名靠前。 May 29, 202226 Plenty of books have been written on this subject, and several major conferences are devoted to this subject each year. 有很多专门论述该专题的书，每年还有几次针对此有很多专门论述该专题的书，每年还有几次针对此专题而举办的大型会议。专题而举办的大型会议。