关于动名词和现在分词“acontrollingidea”中controlling是动名词还是现在分词?就我理解现在分词与所修饰的词之间是主谓关系,动名词是修饰名词的性质OR作用.我觉的这个例子两条都符合啊,疑

Question

关于动名词和现在分词
“a controlling idea”中controlling是动名词还是现在分词?
就我理解现在分词与所修饰的词之间是主谓关系,动名词是修饰名词的性质OR作用.我觉的这个例子两条都符合啊,疑惑…………

Answer 1

动名词作定语往往表示被修饰词的某种用途.如：
a walking stick ＝a stick for walking=a stick which is used for walking
a washing machine=a machine for washing=a machine which is used for washing
a reading room=a room for reading=a room which is used for reading
a measuring tape=a tape for measuring=a tape which is used for measuring
sleeping pills=pills for sleeping=pills which is used for sleeping