The Adjective Clause
The adjective clause, as we have before seen, performs the office of an adjective.
1. The man, who lives opposite, is the mayor of the city.
2. That is the place where Hawthorne wrote the "Blithedale Romance.
3. He gave the book, which he had purchased, to his brother John.
4. There shall not be left one stone upon another, that shall not be thrown down.
When a clause modifies a noun or its equivalent it is an adjective clause.