改错练习

1. A rat's sharp teeth can gnaw through wood, plaster, or soft metallic such as lead.(1)____
译文：老鼠锋利的牙齿能够啃穿木头、塑料或者像铅一样的软金属。
2. Brooklyn New York, had a population of about 23,000 when it becomes a city in l834．(2)____
译文：1834年纽约的布鲁克林成为一座城市，那时它拥有2.3万人口。
3. Ensuring an adequate water supply have been a concern ever since people began to live in towns and cities.(3)____
译文：自从人们开始居住在城填和都市以来，保障足够的水供给一直是个引人关注的问题。
4. Data received from two spacecraft indicate that there is many evidence that huge thunderstorms are now occurring around the equator of the planet Saturn.(4)____
译文：从两艘宇宙飞船接收到的数据表明：已有大量的证据证明巨大的雷雨正出现在土星的赤道附近。
答案解析
1．分析：metallic→metal。考查词性。连词or两边的成分应同词性、同形式。此处应用名词与wood和plaster并列，metallic是形容词，应改为名词metal。另外，短语such as后的名词lead也暗示它前面的词应是名词。
2．分析：becomes→became。考查时态。由时间状语1834推知，谓语动词不能用一般现在时，而应用一般过去时，故将becomes改为became。
3．分析：have→has。考查主谓一致。主语为动名词短语时，谓语动词应为单数形式，have应改为has。
4．分析：many→much。考查不可数名词的修饰语。evidence为不可数名词，应用much修饰，不能用many。注意data是复数形式，其单数形式为datum，所以此句谓语动词indicate无误。