defining + noun phrase
动词define的动名词形式，作主语或宾语。
Defining the problem is the first step.
定义问题是第一步。
决定性的，关键的
用于定义或区分的
that defines or determines the essential nature or character
用于定义或区分的
Serving to define or distinguish.
The architect is defining the shape of the building.
建筑师正在定义建筑物的形状。
用法提示：此处“defining”作为现在分词，构成现在进行时，表示“定义、界定”。
Defining the term clearly is essential for understanding the concept.
清晰地定义这个术语对于理解概念至关重要。
用法提示：此处“defining”作为动名词，作主语，表示“给出定义”的动作。
Her defining moment came when she won the championship.
她的关键时刻是她赢得冠军的时候。
用法提示：此处“defining”作为形容词，修饰“moment”，表示“决定性的、关键的”。
动词define的动名词形式，作主语或宾语。
Defining the problem is the first step.
定义问题是第一步。
defining作形容词，表示‘决定性的’；常修饰moment, characteristic, feature等。
This is a defining moment in history.
这是历史上一个决定性时刻。
动词define的现在进行时形式。
He is defining the parameters of the experiment.
他正在界定实验的参数。
grammar · medium
易错句子The defining of the problem is important.
正确表达The definition of the problem is important.
“defining”是动名词，此处需要名词“definition”表示“定义”这一概念。
grammar · medium
易错句子Please provide a clearly defining term.
正确表达Please provide a clearly defined term.
“defining”是主动含义（起定义作用的），但此处需要已被定义的术语，故应用过去分词“defined”。
defining 强调起决定作用或界定性质的，而 definitive 指最权威、最终定的，常修饰结论或作品
defining 是动词或形容词，表示定义或界定的动作或属性；definition 是名词，指定义本身
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