怎么把两个普通句合成定语从句
which引导的定语从句如何分成两个句子？
which引导的定语从句如何分成两个句子？
1、A shop should keep a stock of those goods which sell best.
商店应存有最畅销的货物。
2、This is the family which is planning to move to the city
这是要搬进城里的一家。
3、This is a reason which we must not forget.
这是我们不能忘记的一个原因。
4、When deep in thought, which he often was, he would forget all around him.
他常常陷入沉思，这时他就会忘掉周围的一切。
5、He bought a book, which was written by LuXun, and which he decided to give to his friend.
他买了本鲁迅写的书，他决定送给朋友。
两个定语从句并列时先行词怎么用？
两个定语从句并列时，根据先行词在从句中充当的成分选择相应的关系词，如果先行词在从句中作宾语，最好不省略，例如：
This is the very man who/whom/ that I am looking for and who/that is qualified for the job.他正是我在找的胜任这项工作的人（本句中，and连接并列的两个定语从句，修饰先行词the man，在第一个定语从句中，先行词作宾语，所以用who，whom或that都可以;在第二个定语从句中，先行词作主语，所以用who或that）
一句话能用两个which吗？
I dont know which is the house in which they used to live.
第一个which是名词性从句的which，第二个是定语从句的wherein which转换过来的。
contrast is often made between business, which is competitive, and government, which is a monopoly. 竞争性的企业和垄断性的政府之间经常形成对比。
句中的两个which分别引导两个非限制性定语从句，先行词分别是business 和covernment,不能拼成一个句子。