make something into something        
phrasal verb with make verb uk/meɪk/ us/meɪk/ made | made
B2 把…变成
to change something into something else
  They've made the spare room into an office. 他们已把空闲的房间改成了办公室。 
 - More examples
 - I made the leftover meat into a pie.
 - I made the silk into a dress.
 - The old buildings were made into classrooms.
 - I'd like to make these pieces of wood into a sculpture.
 - Shall we make this cloth into curtains?