1.Objectives 1)to know the definition and types of sentences. 2)to know what effective sentences are. 3)to identify common errors in sentences. 4)to master the skills of making effective sentences in writing1. Objectives v 1) to know the definition and types of sentences. v 2) to know what effective sentences are. v 3) to identify common errors in sentences. v 4) to master the skills of making effective sentences in writing