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。Lookattheblackboard.Sitdown,please!Openthedoor,please!Keepawayfromit!祈使句的肯定式在祈使句的肯定式中，谓语动词用don't/never+原形。Don'tworry.Nevermind.Don'tturnoffthelight!Don'tplayfootballontheroad!祈使句的否定式将下列祈使句变为否定句。1.Givemesomeapples.2.Let'scleantheclassroom.3.Bequiet.4.PleasewatchTV.5.Runaroundtheplayground.祈使句的否定式练习Let+人称代词（宾格）+动词原形Letmesee.Letmecheck.Let'sgototheseaside.Let'sgohome.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：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：Whataninterestingstory(itis)!Whatbeautifulflowers(theyare)!how感叹句结构：1.How+形容词/副词+主语+谓语！例：Howluckyweare!Howquicklythetimepassed!Exercise:将下列陈述句转换为感叹句。1.Sheswimswonderfully.2.Itisaninterestingbook.3.Theyarecutepencilboxes.4.Thesunglassesarecool.5.Herhairisshort.
