The document provides instructions for constructing sentences based on diagrams of subject-verb-object (S-V-O) and subject-predicate (S-P) relationships. It includes examples of writing simple, compound, and complex sentences based on diagrams of people and objects at a market. Steps include identifying verbs, subjects, and objects; writing simple sentences; combining sentences; and adding adjectives and adverbs to create complex sentences. Practise exercises provide additional examples of applying the steps to write sentences from diagrams.