The graph shows Internet Usage in Taiwan by Age Group, 1998-2000.

　　Summarize the information by selecting and reporting the main features, and make comparisons where relevant。

　　The graph shows changes in the age profile of Internet users in Taiwan between 1998 and 2000.

　　2. 三根以上柱形且多种趋势：

　　The main users of the Internet in Taiwan are young adults between 16 and 30 years old. In 1998, they accounted for more than half of all users. In 1999 the number dropped slightly to 45%， but even in 2000 they were the biggest group。

　　The second biggest group of users is aged between 31 and 50. They made up 41% in 1998, falling slightly to 37% in 2000. When combined with the 16-30 age group, over 94% of users in 1998 were between 16 and 50.

　　However this number is dropping steadily as more children and older users log on. In 1999, the number of children online quadrupled from 2% to 8%， and it continued to increase in 2000. There were similar increases for older users, rising from 4% in 1998 to 10% in 2000.

　　In summary, while adults between 16 and 50 still represent the great majority of Internet users in Taiwan, their share is declining as more children and older users join the web。

　　在第一个主体段中，作者先从最长的红色柱形入手，见划线句子。然后在第二个主体段中继续描写蓝色柱形的数据。在句型选择上我们发现2段首句都使用了主系表的简单句，选择的主语也是类似，因此从高分角度来讲，我们可以将第2个主体段首句的主语换成原先的表语，即31岁至50岁年龄组，效果会更好。

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