The teacher is always well-disposed towards her students.

well-disposed 是由副词 well（好地）和形容词 disposed（倾向于...的）组成的复合形容词。disposed 来自动词 dispose（安排、使倾向于），加上 -ed 变成形容词。 well-disposed 字面意思是"倾向好的态度"，引申为"友善的、有好意的"。