how可以引导定语从句

　　引导语：how可以引导定语从句吗？下面由小编告诉你们吧，欢迎阅读！

　　how不能,但what可以

　　1 What was impossible 50 years ago may be quite possible today (这是what引导的定语从句)

　　== Something that was impossible 50 years ago may be quite possible today.（定语从句）

　　2Howshe managed to finish her hard work on time is beyond my ken.（主语从句）

　　== The way that / in which she finished her hard work is beyond my ken. （定语从句）

　　3 She told them what she had seen there （定语从句）

　　== She told them all / everything that she had seen there.（定语从句）

　　4 They are building a second library in what was once the school cinema..（定语从句）

　　== They are building a second library in the house that / which was once the school cinema. ..（定语从句）

　　为什么how不能引导定语从句

　　关系副词在美国英语里只有三个：when、where、why.它们引导定语从句,在从句中作的是状语.

　　when引导定语从句,在从句里作时间状语,先行词表示时间.如：

　　Tuesday is the day when the garbage truck comes.

　　where引导定语从句,在从句里作地点状语,先行词表示地点,如：

　　I once again came to New York,where I hadn't been for ten years.

　　He and his family moved to Italy,from where he moved to Germany and went to university.

　　He has reached a point where a change is needed.

　　why引导定语从句,在从句中作原因状语,先行词只有reason.

　　That's the reaon why I didn't go to college.

　　how不能引导定语从句,它可以作疑问副词或缩合连接副词使用.如果先行词是the way,则可以用in which、that引导定语从句.如：

　　I don't know how I can solve the problem.

　　That is how he solved the problem.

　　That is the way in which/that he solved the problem.

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