13.It is known to all that fresh air isbeneficial(有益的) to our health.

分析 眾所周知,新鮮的空氣對我們的健康有益.

解答 答案是beneficial.本題考查語境中選用恰當(dāng)?shù)脑~的適當(dāng)形式.beneficial adj.有益的;be 動詞is 后面需要的是形容詞,be beneficial to 對…有益的,故答案是beneficial.

點(diǎn)評 翻譯填空要根據(jù)所提供的漢語意思結(jié)合語境和句子結(jié)構(gòu)選擇恰當(dāng)?shù)脑~、短語或句型;同時注意句子結(jié)構(gòu)和所選詞的形式變化.

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