| Vocabulary Words | Meanings |
|---|---|
| x-ray | a special kind of photograph which shows doctors what the inside of your body looks like |
| xylography | wood engraving, a process of decorative painting on wood |
| xylophone | a set of narrow pieces of wood that make musical sounds when they are hit with wooden hammers |
Non-defining relative clause
Non-defining relative clauses are placed after nouns which are definite already.
The adjective clause which does not define the noun before it but gives additional information about the noun is called the non-defining relative clause.