How to use into in sentences?

 The preposition "into" can be used in sentences in a variety of ways. Here are some examples:

• To indicate movement or entrance:
  • I walked into the room.
  • The ball fell into the hole.
  • The cat jumped into the tree.
• To indicate change:
  • She turned the water into ice.
  • The caterpillar transformed into a butterfly.
  • The old house was converted into a museum.
• To indicate division or separation:
  • He cut the cake into four pieces.
  • The class was divided into two groups.
  • The country was split into two nations.
• To indicate a figurative change or development:
  • He fell into a deep depression.
  • The company went into bankruptcy.
  • The country entered into a period of peace and prosperity.

Here are some more examples of "into" in sentences:

• I poured the milk into the glass.
• The teacher put the papers into the folder.
• The student wrote the essay into the computer.
• The workers loaded the boxes into the truck.
• The scientist injected the vaccine into the mouse.

"Into" can also be used in idiomatic expressions, such as:

• Into thin air
• Into the bargain
• Into the blue
• Into the line of fire
• Into the groove

I hope this helps!