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16.這是人類首次認真思考自己的活動對環(huán)境造成的影響.(It's the first time; effect)It is the first time (that) humans/human beings have thought seriously about the effect of their activities on the environment.

分析 這是人類首次認真思考自己的活動對環(huán)境造成的影響.

解答 答案:It is the first time (that) humans/human beings have thought seriously about the effect of their activities on the environment.
解析:It is the first time (that)這個結構中,that從句要用現(xiàn)在完成時(如果是it was the first time that,則that從句要用過去完成時);另外本題還考查the effect on"對…造成的影響"這一固定短語.

點評 本題考查句子翻譯,做此類題目時一定要根據中文及英文題干確定需要翻譯的成分,再找出與之對應的英文并考慮各成分是否有形式的改變.

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