certain 

  1. 形容詞
某些的, 某的
某種程度的
一定程度的
一定會的
肯定的, 一定的
確定的, 有把握的
必然的, 的確的
確鑿的, 可靠的
確信的, 無疑的
certain to ...(動詞...)/

    同義字詞
anonymous,given,one,some,unidentified,unnamed,unspecified
assured,clear,cocksure,confident,doubtless,implicit,positive,sanguine,sure
determinate,final,firm,fixed,flat,frozen,hard,hard-and-fast,inexpugnable,set,settled,stable
ineluctable,ineludible,inescapable,inevitable,necessary,sure,unavoidable,unescapable
can't-miss,fail-safe,infallible,sure,surefire,unfailing
accomplished,inarguable,incontestable,incontrovertible,indisputable,indubitable,irrefragable,irrefutable,positive,sure,unanswerable,unarguable,unchallengeable,undeniable,unquestionable

  2. 副詞
for certain:
肯定地
確定地
無疑地
確定地

    
                        
    3. 
                                                                        
  3. 

    代名詞
某些
某幾個

    

    
                        
    4. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                We can not be certain about any of this.                            
    2. 
                                                    
  2. 
                                It's certain to be an unforgettable event!                            
    3. 
                                                    
  3. 
                                Though could have expressed certain wishes.                            
    4. 
                                                    
  4. 
                                But they are not covered by certain rules .                            
    5. 
                                                    
  5. 
                                How can one be certain of rule-following at all?                            
    6.