1、 太傻面授教师教案 图表作文讲解2：柱状图和饼状图学生面授老师时间本次课时雅思写作第二课时教学思路1.作文简介、写作技巧2.实例讲解3.分析总结4.课后作业教学目标柱状图、饼状图知识点讲解基本特征和写作方法实例分析讲解重点写作技巧讲解范文学习柱状图和饼状图写作方法备考资料剑桥IELTS4-8教学详细内容：一、 写作技巧详解1. 柱状图特点 柱状图是动态图表，切入点是描述趋势。 柱状图写作注重“比较”(找出similarity)和“对比”(找出difference)，也就是说需要横向总结所有柱状图表的共性特征，也要分别描写各个柱子的个性特征。 两种写作方式：其一是对不同时间段内的数据进行比较，适
2、合于数据代表的物体较少且时间界限明确的情况。另外是对单独数据的全程描述，适合于描述数据对象很多且时间划定不清晰的情况。2. 饼状图特点饼形图与柱形图或者线形图所截然不同的是它没有了横轴与纵轴，而以饼形的分割来表示百分比，可以依照三步审题分析法来进行观察： 观察共有几张饼状图，以及它们之间的关系是什么（一般说来，雅思图表题中极少见到单饼图）； 观察每张饼状图中有哪几个区域，以及各个区域分别代表什么； 观察单个饼状图中各区域间的百分比差异，以及相同区域在各个饼状图间的百分比的比较或发展。饼状图是所有图表题中最好写的一种，唯一值得注意的地方在于如何丰富百分比的表达 和“占”的表达，要采取多样性的表达
3、，如25%=a quarter of, 50%=half of, 50%=a/the majority of.描写饼状图中的比例构成就是饼状图图表作文的重点，但也应注意，这种描述并不是对图形的简单重复，对各项数据比例的描述应建立在归纳整理的基础上有条理地进行。学生不仅要善于找数据，更重要的是要善于从数据或比例中升华出来，找到规律和本质。常用词汇、句型及模板1. 柱状图1）倍数的表达 今年的产量是去年产量的两倍 The output this year is two times(twice) more than last years. As much as 不可数名词 as many as 可数
4、The books of this semester are two times as many as that of last semester. A is two times the amount of B不可数 A is two times the number of B可数2) 常用套句 There was in the number of A from to (over next years), which was followed by and then untilwhen there was for the next years. Fromonwards, there was i
5、n the number of A which then increased / decreased at % in In , the number reached (was) %, but (30) years later there was The number of A increased rapidly from to during the (five-year) period. In the (three years) from through, the percentage of A was slightly larger / smaller than that of B. The
6、 graphs show a threefold increase in the number of A. Here is an upward trend in the number of A. (year) witnessed / saw a sharp rise in A.2. 饼状图1) 常用词：percentage, proportion, make up, constitute, account for, take up, .is divided intoparts, consume the largest/smallest portion.2) 例句： The graph, pre
7、sented in a pie chart, shows the general trend in. The percentage of A in is more than twice than that of B. The biggest loss was to A area. There is not a great deal of difference between A and B. In general positions, females outnumber males. A much greater percentage of men than women are found i
8、n managerial positions. The profit of company A doubled from May to September.3） 模板： The two pie charts describe The first point to note is Comparing the graphs, . The graphs also suggest that In conclusion, it can be seen from the data that .4） 饼状图作文模型The two pie charts illustrate the significant c
9、hanges in peoples ways of communication from 1970 to 1995.The first graph shows that in 1975, the most popular way to communicate was letter writing, with the percentage of 50%. Others _, the figures are 32% and 18% respectively.It can be seen from the second graph that ways of communication changed
10、 a lot in two decades. By 1995, _. By contrast, _.Comparing the two pie charts, we can see that the use of the phones and computers during the same period had both risen considerably. However, letter writing became less popular among the people.In general, people inclined to use more modernized medi
11、ums to communicate with others, while the traditional way became less employed.The pie chart depicts the proportion of _. It consists of six segments, the largest one representing _, which account for 26% of the total. _ takes up 21%, becoming the second largest._. The rest proportions, 15% of all,
12、constituting 5% and 10% respectively.From the chart it can be seen clearly that _.二、实例分析分析思路：1. 第一幅柱状图的描述单位是百万，即人数；第二幅则是百分比。2. 第二幅柱状图仅显示了1970年和2000年的信息，而第一幅柱状图显示了1970、1980、1990、2000年的信息。3. 由第一幅柱状图可以看出，从1980年到2000年，结婚人数和离婚人数的变化趋势相似。4. 从第二幅图可以看出，在2000年，结婚和寡居的成年人的比例有所降低而从未结婚过和离婚的比例则有所上升。范文分析One chartsh
13、ows the number of marriages and divorces in the USA in 1970, 1980, 1990 and 2000.The othershows the marital status of adult Americans in 1970 and 2000.首段概述图表信息，对题目进行改写，注意动词的用法和时态。 描述类的常用词有：show/describe/illustrate/demonstrate/indicate； 首段概括图表信息的时候都用一般现在时； 改写题目的时候注意扩充时间地点等细节。The first chartindicates
14、that the number of marriages in America(2.5 million) was the same in 1970 and 1980. This summer thenfell to 2.3 million in 1990 andfell further to 2 million in 2000. The number of divorces was 1 million in 1970 androse to 1.4 million in 1980. Itdeclined to 1.1 million in 1990 andfell slightly to 1 m
15、illion in 2000. Indicate的用法 保持不变的描述方式：was the same 上升与下降的表达方式：fall/decline(further/slightly) to, rise to70% of adults were married in 1970, but this declined to 59% in 2000. Thepercentage of widowed peoplefell from 7 %( 1970) to 5 %( 2000). The percentage of single people was 15% in 1970 andincrease
16、d to 20% in 2000. The percentage of divorced people alsorose- from 2% (1970) to 8% (2000). 百分比的表达方式：the percentage of 从多少降到多少：fall fromto 上升到：increase to 从多少增长到多少：rise fromtoTo summarize, the number of marriages in Americadeclined between 1970 and 2000, whilst the number of divorces rose, then fell.
17、 Alower percentage of adult Americans were married or widowed in 2000 than in 1970, but the percentages of single and divorced adults were higher. 从哪年到哪年下降：decline betweenand 更低的百分比：lower percentage分析思路1. 四个饼状图可以分为两组，一组是澳大利亚，一组是法国；2. 饼状图由五部分组成:coal, oil, natural gas, hydro power, nuclear power;3. 图中
18、的时间是1980年和2000年4. 单位是units范文分析The chartscompare the sources of electricity in Australia and France in the years 1980 and 2000. Between these years electricity production almostdoubled, rising from 100 units to 170 in Australia, and from 90 to 180 units in France. 对比：compare 翻番：double 从多少增长到多少：rise f
19、romtoIn 1980 Australia used coal as the main electricity source (50 units) and theremainder was produced from natural gas, hydro power (each producing 20 units) and oil (which produced only 10 units). By 2000, coal had become the fuel for more than 75% of electricity produced and only hydrocontinued
20、 to be another significant source supplyingapproximately 20%. 剩余的：remainder 继续的趋势：continue to 大约：approximately In contrast, France used coal as a source for only 25 units of electricity in 1980, which was matched by natural gas. Theremaining 40 units were produced largely from oil and nuclear power,
21、 with hydro contributing only 5 units. But by 2000 nuclear power, which was not used at all in Australia, haddeveloped into the main source, producing almost 75% of electricity, at 126 units, while coal and oil together produced only 50 units. Other sources were no longer significant, 对比来说：in contra
22、st 定语从句用以解释说明 剩下的部分：remaining with引导的介词短语作状语 定语从句用以解释说明 发展成为：develop into 非谓语动词作状语 At加数字是一种数字的描述方式Overall, it is clear that by 2000 these two countries relied on different principal fuel sources: Australia relied on coal and France on nuclear power.结尾总结图表中最主要的特征。三、课后练习 1. 柱状图The graph shows some values and regions of import and export food.Summarize the information by selecting and reporting the main features, and make comparisons where relevant.2.饼状图
