祈使句与感叹句祈使句与感叹句祈使句与感叹句祈使句与感叹句祈使句是用来表示请求、命令、劝告、建议等的句子。习惯上常常省略主语，句末用感叹号或者句号，朗读时常用降调。祈使句1.祈使句的肯定式2.祈使句的否定式3.祈使句的let式4.祈使句的强调式5.不含动词的祈使句祈使句的形式在祈使句的肯定式中，谓语动词要使用原形。Look at the blackboard.Sit down, please!Open the door, please!Keep away from it!祈使句的肯定式在祈使句的肯定式中，谓语动词用dont/never+原形。Dont worry.Never mind.Dont turn off the light!Dont play football on the road!祈使句的否定式将下列祈使句变为否定句。1.Give me some apples.2.Lets clean the classroom.3.Be quiet.4.Please watch TV.5.Run around the playground.祈使句的否定式练习Let + 人称代词（宾格）+动词原形Let me see.Let me check.Lets go to the seaside.Lets go home.祈使句的let式感叹句感叹句表示说话人的惊奇、愤怒、赞美、喜悦等情绪。感叹句一般由what和how开头，what修饰名词，how修饰形容词和副词。what感叹句结构：感叹句结构：1.What+a/an+形容词+名词（+主语+谓语）！2.What+形容词+名词复数（+主语+谓语）！例：What an interesting story (it is)!What beautiful flowers (they are)!how感叹句结构：感叹句结构：1.How +形容词/副词+主语+谓语！例：How lucky we are!How quickly the time passed!Exercise:将下列陈述句转换为感叹句。将下列陈述句转换为感叹句。1. She swims wonderfully.2. It is an interesting book.3. They are cute pencil boxes.4. The sunglasses are cool.5. Her hair is short.