大家看看下面的笔记有什么问题？

“介词+关系代词”构成的定语从句与不定式的转换：

1） The farmer used wood to build a house in which he could store grains.

2） The farmer used wood to build a house in which to store grains.

3） The farmer used wood to build a house to store grains in.

“介词+关系代词+ to do”结构不能用关系副词替换：不可以是关系副词+不定式。

不能说“The farmer used wood to build a house where to store grains. *

完整的定语从句，关系词在定语从句中作地点状语可以用介词+关系代词，也可以用关系副词where。

She didn't know where to go.她不知道该去哪儿。这里的where是疑问副词，不是关系副词。

“介词+关系代词+ to do”结构不能将介词置于句末：

不能说“The farmer used wood to build a house which to store grains in. *”

若没有介词，不能转换成不定式：

不能说“I can't think of anybody whom to invite. *”。

而要说“I can't think of anybody to invite.”，或者“I can't think of anybody who I should invite.”。

“介词+关系代词”的定语从句可以有四种写法：

We moved to the country so that the kids would have a garden ______.

                                                                                in which they could play

                                                                                which they could play in

                                                                               in which to play

                                                                               to play in

1） ______ is known to us all, the whale is not fish but a mammal.

2） ______ is known to us all that the whale is not fish but a mammal.

3） ______ is known to us all is that the whale is not fish but a mammal.

答案:As ;It ; What（注：在主语从句中作主语，所以只能填What。）