题目内容

4.This alsokeeps the air,soil,water and cropsfreefromchemicals.(使…免受)

分析 这使得空气、土壤、水和庄稼不含化学物质.

解答 答案是keeps,free from.本题考查语境中选用恰当的词的适当形式.free from形容词短语,免于,没有;keep…free from 使免于,使没有;题干中主语为单数this,故用第三人称keeps,故答案为keeps,free from.

点评 翻译填空要根据所提供的汉语意思结合语境和句子结构选择恰当的词、短语或句型;同时注意句子结构和所选词的形式变化.

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