3.Types of Sentences 1.Classification by Structure Simple(简单句) Compound(并列句) Complex(复合句) Compound-complex(并列复合句) 2.Classification by Communicative Function Declarative Interrogative Imperative Exclamatory3. Types of Sentences 1. Classification by Structure Simple（简单句） Compound（并列句） Complex（复合句） Compound-complex（并列复合句） 2.Classification by Communicative Function Declarative Interrogative Imperative Exclamatory