定语从句什么时候用which

Question

1:定语从句什么时候用which
2:so that 和so as 得区别

Answer 1

1、定语从句用which情况：
1，非限定性定语从句
2.关系代词前有介词
3.关系代词后有插入语
如：
1、The sun heats the earth , which makes it possible for plants to grow .
2、The bodies on which the forces act are in equilibrium．
3、Here is the English grammar book which,as I have told you will help improve your English.

2：如果第二个问题问的这两个短语还是与定语从句有关的话，那
so后面都加形容词，that后面加句子，as后面加名词。如：The biscuits are so delicious that I want to eat more. The food is not so good as those we ate in Bill's home.
so...as用于否定句，和as...as意思一样。后者肯定句否定句都能用。

希望能帮到您！

Answer 2

①当关系代词的前面有介词时.
1.A zoo is a park in which many kinds of animals are kept for exhibition.
2.Is this the room in which Mr. White lives?
②在非限制性定语从句中.
1.Crusoe's dog, which was are now very old, became ill and died .
2.More and more people are beginning to learn English, which is becoming very popular in our country. (which指代主句)
③在一个句子中有两个定语从句，其中一个定语从句的关系代词用了that, 另一个宜用which .
1. Let me show you the novel，that I borrowed from the library which was newly open to us.
2. At the station I bought some magazines that might help me to pass the time on the train and which I could pass on to others when I finished them.
④当关系代词后面带有插入语时.
1. Here's the English grammar which, as I have told you, will help improve your English.
⑤先行词本身是that, 宜用which .
What's that which she is looking at?
⑥先行词是those+复数名词.
A shop should keep a stock of those goods which sell best.
so...as用于否定句，as...as用于肯定句否定句
希望这对你有帮助

Answer 3

先行词为物的时候可以用which，在从句中作主语或宾语
在非限制性定语从句中用which，位于逗号后面
有介词的时候一般用which，位于介词后，也可将介词后置，置于从句的末尾

so that 是如此以至于的意思，一般用于肯定句中，而so as用于否定句中

Answer 4

对事物