要求考生对某个地理区域在不同历史年代里的情况进行比较 END
文章结构：历史变迁题通常按照时间顺序划分主体段。题中要求比较几个年代就分成几个主体段来写，每段写其中一个历史阶段（但是如果每段都很短甚至只有一两句话，那么也可以考虑把几个很短的主体段合并为一个长主体段）开头段也是改写原题，结尾段也要求做出结论（最好能概括一下XX是如何发展变化的，但如果实在概括不出来也可以写“本地图展示了……在……个阶段的变化过程”）
时态：历史变迁题的开头段改写原题时也用一般现在时，但主体段和结尾段则需要用过去时。如果其中一个图的时间是“现在”，在单纯描述这张图时需要用一般现在时。
比较重点：结合这道真题的实例给出常用句型和例句。1. 在某处建造了AA was built in/ was constructed in/ was put up in …e.g. A playground was constructed in the southeast of the park in place of the original flower bed in 1980, where residents can play all kinds of ball games and do other activities now.2. 在某处又增建了AA was added to…/ An addition was made to …, which was A.e.g. Two other paths, which extend to the north and east, were added to the original ones.3. A被改造成了B (改变场地或建筑的用途时)A was turned into/ was converted to Be.g. The flower bed located in the southeast in 1980 was converted to a playground for people to play a variety of ball games.4. A从场地上被移走或拆掉了A was removed/ demolished/ taken down.e.g. The surrounding walls and two gates were removed now, thus visitors can get in and out more freely.5. A被B取代了A was replaced by Be.g. The south-western flower bed was replaced by bushes.6. 场地上某些其他事物已经被移走了，但是A存留下来了……, but A remainede.g. Most of the facilities in the park have been changed or removed during these years, but only the pond and benches near the western gate remained at the same place.7. A的面积被缩小/扩大了The size of A was reduced/ expanded to …The size of the north-eastern tree area was reduced to only half of the original size.8. A 经历了（某种变化）A experienced/ witnessed/ saw …e.g. The park has witnessed tremendous changes and adaptations during the period of over three decades.