特殊疑问词 + ever =No matter +特殊疑问词
连词  whether                                 
no matter +      特殊疑问代词 what / which who/
                              whom / whose
                       
                特殊疑问副词 when/ where /how
     
该类结构只能引导让步状语从句, 而且位置灵活放在主句前后皆可
第一: no matter whether 引导让步状语从句, whether在从句中不充当句子成分,只起引导作用,但是有词义,其汉语意思为“无论是否----”
      例 1: No matter whether he had been invited or not, he was there to celebrate Jim’s birthday.
地震应急演练方案例 2: No matter whether it is light or dark at that hour, we've decided to leave at five o'clock in the morning.银狐洞
      例 3 :Mary always gets to school on time, no matter whether it rains or winds.
第二: no matter what只能引导让步状语从句,其意为“无论什么”。What 在从句中充当主语、宾语、表语。
  例1:No matter what happened, he would not say a word. (what 在从句中作主语)
  例2:No matter what you do, don’t touch this switch.    (what 在从句中作宾语)
地震震级一共分为几个等级
例 3:No matter what you want to be in the future, you must work hard now .
                                                      (what 在从句中作表语)
 例 4:I won’t believe you, no matter what  you say.  (what 在从句中作宾语)
    例 5:No matter what are needed in your wedding , I will preparE them for it in time.
                                                      (what 在从句中作主语)
露娜出装
        Which words can you guess may replace “no matter what ” in the sentences above?
  第三:no matter who , 在让步状语从句中同样作从句的主语、宾语、表语。 Who 既可作主语,又可作宾语和表语,no matter whom  只做宾语和表语。二者同时出现,你选谁呢?
例 1.  No matter who/whom  you are,  you have no right to do that。
                                            (No matter who/whom在从句中作表语)
    例 2.  No mater who/whom you turn to for help, he must give you a hand.
                                            (No matter who/whom在从句中作宾语)
    例 3.  He will be welcome no matter who comes .
                                            (No matter who在从句中作主语)
    例 4  No matter who breaks the law, he should be punished.
(No matter who在从句中作主语)
  第四:no matter which (+名词)
        no matter whose + 名词                                                                           
whether是什么意思
  which 既可单独使用,也可以后带名词,意思是“无论哪一个或哪些----”;
whose后面一定带名词,意思是“无论谁的----”。二者都可作从句的主语、宾语、表语。 
例 1 . No matter which job you choose,you must take it seriously.
      例 2 .I feel happy no matter which team wins .
      例 3.  No matter whose house is destroyed,the government will provide food and shelter.
      例 4 .We must protect it no matter whose possession it belongs to.
以上例句中no matter which=whichever  ; no matter whose=whosever
第五: no matter when/where/how 在让步状语从句中充当时间、地点、方式状语,既起引导作用,又有词义,其意思是“无论什么时候、无论在哪里、无论怎样”。
  no matter when = whenever;no matter where= wherever; no matter how = however
例 1. No matter when my motherland needs me, I will devote myself to it without hesitation.
      例 2 . he was always busy working no matter when I visited him,
      例 3 . No matter where you go, I will be right here waiting for you.
例 4 . No matter Where he works ,he can always find time to read.
      例 5 . I will carry it out no matter how hard it may be.
      例 6 . No matter how late he is, his mother will wait for him to have dinner together.
      例 7 . No matter how much we try , we shall never succeed.
高考考点
第一:no matter what 引导的让步状语从句中,有时可以省略动词be或者不及物动词。  (who/how偶尔也有省略)
例 1. I’ve decided to leave tomorrow, no matter what (happens).
例 2. In our company, every body is well taken care of, no matter what his position (is).
例 3. No matter what the excuse (is), you must not be late .
例 4. No matter what the season (is), he always wears the same suit.
防紫外线伞例 5  The old tower must be saved whatever the cost (is).
例 6  No matter who (it is ),anyone may point out our shortcoming.
例 7  We must value it no matter how small a drop of water(it is).
第二:No matter how 与 no matter what 的区别
No matter how+形容词 / 副词 + 主语 +谓语
No matter how+形容词+a/an +可数名词单数+主语 + 谓语
No matter what+a/an+形容词+可数名词单数+主语 + 谓语
                            可数名词复数
No matter what + 形容词 +                  + 主语 + 谓语
                                          不可数名词
例1. No matter how hard he studies, he fails in each exams.
例2. He goes to swim in the lake no matter how cold the weather is .
例3. They never lost heart no matter what difficulty they had in finishing their tasks.