现在分词作定语时,和它所修饰的名词之间有逻辑上的主谓关系,表示所修饰名词的特征。如:
Listen to the singing bird. Who is the boy running towards us。
动词不定式作定语时,当所修饰的名词指人时,和它所修饰的名词之间有逻辑上的主谓关系。如:
He is always the first to come to school.
当所修饰的名词指物时,和它所修饰的名词之间有逻辑上的动宾关系。如: I have a meeting to attend.
如果作定语的动词不定式中的动词是不及物动词,需加上相应的介词。如:
I have no room to live in. There is nothing for me to worry about.
望采纳