It is necessary to learn some foreign languages for young adults.

admin2015-09-24  32

问题 It is necessary to learn some foreign languages for young adults.

选项

答案年轻人学习几门外语是很有必要的。

解析 该句省译了形式主语。It is necessary to do sth.句型中it是形式主语,真正的主语是不定式结构。
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