题目内容

4．Thistheory（理论） helps to explain how animals communicate with each other．

分析 该理论有助于解释动物彼此之间是如何交流的．

解答 答案：theory
解析：根据括号内的中文及题干，可知本题考查theory"理论"这一单词；因为横线前面有单数形式的指示代词this，故后面的名词使用单数即可．综上，本题答案为：theory．

点评 本题考查句子翻译，做此类题目时一定要根据中文及英文题干确定需要翻译的成分，再找出与之对应的英文并考虑各成分是否有形式的改变．

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