思路分析:
1. 分段原則為: 每條線一段,即上升的一段,下降的一段,波動的一段。
2. 重點描述數(shù)據(jù)的改變和趨勢。
3. 注意一類數(shù)據(jù)的描述(Max, Min,起點,終點,交點)。
4. 線段的描述應呈現(xiàn):動作+幅度。
參考范文:
The three graphs of wheat exports each show a quite different pattern between 1985 and 1990. Exports from Australia declined over the five-year period, while the Canadian market fluctuated considerably, and the European Community showed an increase.
In 1985, Australia exported about 15 millions of tonnes of wheat and the following year the number increased by one million tonnes to 16 million. After that, however, there was a gradual decline until 1989 and 1990 when it remained stable at about 11 million tonnes.
Over the same period, the amount of Canadian exports varied greatly. It started at 19 million tonnes in 1985, reached a peak in 1988 of 24 million, dropped dramatically in 1989 to 14 million tonnes and then climbed back to 19 million in 1990.
Seventeen million tonnes were exported from the European Community in 1985, but this decreased to 14 million tonnes in 1986 and then rose to 15 million in 1987 and 1988 before increasing once more to 20 million in 1990.
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