Students compare and contrast the versions of the sentences. Subordinate clauses create relationships. Among the different clauses, there are some that are essential to the meaning of the sentence and some that are nonessential. The compare and contrast invitation nudges students to note the different placement of phrases. Students discuss the relationship of each subordinate clause to the rest of its sentence. Students may consider the sentence without the highlighted phrases to better understand the relationship. Many grammatical patterns are designed to extend information within a sentence in lieu of adding sentence after sentence to get information across. Students compare and contrast the positioning of the relative clauses. Students go into their writing to find simple sentences where they can include a clause beginning with a wh- word to add detail to their sentences.