二、语法突破
1．“疑问词＋ever”包括“疑问代词＋ever”和“疑问副词＋ever”
(1)疑问代词＋ever：whatever, whichever, whoever, whomever
(2)疑问副词＋ever：whenever, wherever, however
2．“疑问词＋ever”与“no matter＋疑问词”引导从句时的区别
(1)引导让步状语从句时，“疑问词＋ever”与“no matter＋疑问词”可以互换使用。
The quality will be the same, whichever/no matter which of them you choose.
它们当中无论你选哪一个，品质都一样。
Whoever/No matter who breaks the rule, he must be punished.
无论谁违反了规定，都要受到处罚。
The task must be done, however/no mater how difficult it may be.
无论多么艰难，这个任务一定要完成。
Wherever/No matter where she goes, there are crowds of people waiting to see her.
她所到之处都有成群的人等着见她。
You can ask for help whenever/no matter when you need it.
你如果需要帮助随时可以提出来。
