一、閱寫句式

　　1.What explains this remarkable events? Two factors: people have figured out how to use

　　water more efficiently, and communities are rethinking their priorities for water use.

　　設問句，引導下文，提出解決方案或者辦法，引發讀者的思考。

　　2.The consequences of our water policies extend beyond jeopardizing human health。

　　extend beyond 這里其實意譯為遠非，即不僅僅，是個很好用的承上連接詞，可用于雅思作文多個因素并列時。

　　3.Yet, there is a dark side to this picture: despite our process, half of the world's population still suffers, with water services inferior to those available to the ancient Greeks and Romans.

　　轉折句，先優點后轉缺點。

　　4.And disputes over shared water resources had led to violence and continue to raise local, national and even international tensions.

　　We are falling behind in efforts to solve these problems。

　　我們解決上述問題的力度還遠遠不夠。

　　local, national, International 初級詞匯，搭配起來卻循序漸進，顯示出邏輯性。fall behind和effort 基礎5分難度詞匯，解決問題型文章可以套用。寫作未必總用高級詞匯，對于基礎薄弱的同學先學會如何小詞合理搭配，更加有利于短期提高水平，

　　二、閱寫段落

　　Throughout the first three -quarters of the 20th century, the quantity of fresh water consumed per person doubled on average; in the USA, water withdrawals increased tenfold while the population quadrupled. But since 1980, the amount of water consumed per person has actually decreased, thanks to a range of new technologies that help to conserve water in homes and industry. In 1965,for instance ,Japan use approximately 13 million gallons of water produce ﹩1 million of commercial output; by 1989 this had dropped to 3.5 million gallons (even accounting for inflation)--- almost a quadrupling of water productivity. In the USA, water withdrawals has fallen by more than 20% from their peak in 1980.

　　小作文數據圖表題表示數據變化趨勢，上升、下降(尤其是成倍)可以借鑒。

　　基本詞組：

　　1.兩倍twice as….as/double on average

　　2.三倍triple/three times as…as

　　3.四倍quadruple

　　4.drop to 下降到(可加程度副詞noticeably，considerably，sharply，dramatically, slightly等)

　　5.fall by more than 下降了(超過)…..

　　6.account for 占據(represent, constitute)

　　基本句式：

　　By 1989 this had dropped to 3.5 million gallons (even accounting for inflation)--- almost a quadrupling of water productivity. In the USA, water withdrawals has fallen by more than 20% from their peak in 1980.

　　括號內容進一步解釋，可以借鑒說明具體客觀數據，使句子結構主次清晰，簡潔精練，重點突出。

　　例如：

　　1.The location was also a significant consideration and the percentage of students who had paid attention to this did not change remarkably (16% in 2002 and 19% in 1982 respectively)

　　2.The total number of sales for the month was 3134 (1474 to college students, 1051 to book club members, 405 to the staff and 204 to the public).

　　3.The table illustrates the differences in agricultural consumption in some areas of the world by contrasting the amount of irrigated land Brazil (26500km2) with that in the D.R.C. (100 km2).

　　4.Heating rooms and water accounts for the highest proportion (52.2%) of the total amount of electricity used, while the running of ovens, kettles and washing machines constitutes 17.5% of the total consumption of electricity.

　　破折號起補充說明作用，一般可借鑒改成逗號形式，描述多組數據的橫向縱向比較關系或者單組數據的變化趨勢等信息。

　　例如：

　　1.They were also more concerned with the reputation of the university, with one quarter of respondents rating this highly in 2002, in contrast to only 5% in 1982.

　　2.The percentage of students who valued the access to amenities and sports facilities more than tripled from 5% to 18% in 2002, by which time this factor had become the third most common reason for choosing a university.

　　3.The system in Paris has the second largest number of passengers, at 1191 million passengers per year.

　　4.The waste output of Korea, in contrast, showed a marked decrease to 19 million in 2000, with no figure provided for the year 1980.