into  
preposition uk/ˈɪn.tuː/ us/ˈɪn.tuː/
  (INSIDE)      
 A1 进入,到…里面
to the inside or middle of a place, container, area, etc.
  Would you put the jar back into the cupboard for me, please? 请帮我把罐子放回碗橱里,好吗? 
 Let's go into the garden. 我们去花园吧。 
 Stop running around and get into bed! 别乱跑了,快上床! 
 I can't get into these trousers any more. They're far too small for me. 我再也穿不上这些裤子了,它们都太小了。 
 - More examples
- They climbed into the truck and drove away.
- The door opened and a nurse came into the room.
- Crack three eggs into a bowl and mix them together.
- He thrust his hands into his pockets.
- He took off his clothes and got into the bath.
  (CHANGE)      
 A2 成为,转为
used to show when a person or thing is changing from one form or condition to another
  Peel the cucumber and chop it into small cubes. 把黄瓜削皮,再切成小方块。 
 There was a series of explosions and the van burst into flames (= started to burn violently). 发生了一系列的爆炸,随后货车开始燃起熊熊大火。 
 Her novels have been translated into 19 languages. 她的小说已被译成19种语言。 
 We're planning to turn the smallest bedroom into an office. 我们正计划将最小的卧室改成办公室。 
 - More examples
- The commercialization of football has turned it from a sport into a business.
- Could we convert the small bedroom into a second bathroom?
- These chemicals quickly degrade into harmless compounds.
- Over time, their acquaintance developed into a lasting friendship.
- Heavy rainfall turned the river into a rushing torrent.
  (TOUCHING FORCEFULLY)      
 B1 碰上,撞上
used to show movement that involves something touching something else with a lot of force but without moving inside it
  He's always walking into things when he doesn't have his glasses on. 他不戴眼镜时总是东撞西碰的。 
 - More examples
- The car skidded and went out of control, crashing into an oncoming truck.
- The plane crashed into a mountainside.
- A stone was digging into my heel.
- She bumped into his tray, knocking the food onto his lap.
- I wasn't looking where I was going and walked into a lamppost.
  (TOWARDS)      
 B1 朝着…的方向
in the direction of something or someone
  She was looking straight into his eyes. 她直视着他的眼睛。 
 - More examples
- The bull tossed him up into the air.
- There was an accident on the main road into town.
- She shone the torch into the dark room.
- I trekked all the way into town to meet him and he didn't even turn up.
- Chuck it into the corner.
  (ABOUT)      
  涉及,关于
involving or about something
  an inquiry into the cause of the accident 对事故原因的调查 
 - More examples
- Citizens have demanded a full inquiry into the government's handling of the epidemic.
- Inquiry into the matter is pointless - no one will tell you anything.
- She's researching into possible cures for AIDS.
- They are doing some fascinating research into the language of dolphins.
- Several social workers have looked into the child's case.
  (DIVISION)      
  除
used when referring to the division of one number by another number
  What's 5 into 125? 5除125是多少? 
   (INTERESTED)      
B1 极喜欢,对…很有兴趣
enthusiastic about or interested in
  Jackie's really into classical music. 杰基非常喜欢古典音乐。