An essential relative clause provides necessary, defining information about the noun. On the other hand, non‐ essential relative clauses provide additional, non‐necessary information about the noun.

Complete the sentence: "The student _____ (who, whom, whose) dog has run away, has gone to look for it." There are two types of relative clauses: defining relative clauses (specify which noun we are ...

While educated people agree on most grammatical rules, there are fierce debates on a few key points. We're going to lay down the most controversial rules and explain when to follow them and when to ...