why 

  1. 副詞
為什麼, 為何
何故
why in the world/
why on earth:
究竟為什麼
到底為什麼

    
                        
    2. 
                                                                        
  2. 

    名詞
通常為複數whys:
理由, 原因
難解的問題
謎

    

    同義字詞
account,authority,grounds,motive,reason,subject,wherefore

    
                        
    3. 
                                                                        
  3. 

    感嘆詞
何故
(用以表示驚訝、不耐煩)咦!/
哎呀!
(用以表示猶豫)唔!

    

    同義字詞
ah,aha,come on,fie,indeed,no,pshaw,well,what

    
                        
    4. 
                                                                        
  4. 

    語法
(問句)Why would ...(人事物):
(假設性地)...為什麽會?
(假設性地)...為何會?
(問句)Why would ...(A: 人事物) ...(B: 動詞...)/
(問句)Why would ...(A: 人事物) be ...(B: 動詞ing ...):
(假設性地)(A)為什麽會做(B)?
(假設性地)(A)為何會做(B)?
(問句)Why ...(動詞...):
為什麼做...?
為什麼要做...?

    


    
                        
    5. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                So why not just play on PC ?                            
    2. 
                                                    
  2. 
                                Let's take a closer look why .                            
    3. 
                                                    
  3. 
                                That's why they don't know them.                            
    4. 
                                                    
  4. 
                                So why invite her into the castle?                            
    5. 
                                                    
  5. 
                                Why didn't he think along that line?                            
    6.