英语语法祈使句学案.ppt

祈使句 祈使句 祈使句,无主语,只用动词就可以. 表示请求或命令,加上please表客气。 如果变成否定句， Don’t开头是规律。 No talking!是警示，祈使句用法要牢记。 祈使句的结构如下： 　　　 (Please) + do sth. 　　　(Please) + Don’t do sth. 1.肯定： 2.否定 ： 3.第一人称的祈使句 Let’s + （not）动词原形 … Eg. Let’s go home together./ let’s not talk in the class. 1. let’s …… , shall we? 2.Let sb …. , will you? 3.祈使句 ， will you? 祈使句 : 是表示请求、命令、建议等句子 通常说话的对象是 第二人 称you, you常被省略。 反意疑问句 1.动词+… 2. Please+动词… 3. 人名+动词 Be quiet. Please have a seat. David, pay attention. 5.do可以放在动词前，为加强语气用。 如：Do come in,please! Do listen to me ,please! Do open the door,please! 4. 第三人称的祈使句： Let sb(宾格/人名)+动词原形 Let her have a try . Don’t let her have a try . Turn left! Guessing Game Turn right! Guessing Game Walk on the zebra crossing! Guessing Game Guessing Game Don’t smoke! No smoking! Guessing Game Don’t play football! Guessing Game Don’t park your car! Guessing Game Don’t eat! Guessing Game Don’t pick the flowers! Go upstairs! Guessing Game Guessing Game Go downstairs! Let’s do exercise. 1. Jim, _____ me a hand. A. gives B. is giving C. will give D. give 2. ____ careful, Jenny! There is a tree in front of you. A. Am B. / C. Be D. Was 3. Lets ____ our time. A. not waste B. no wasting C. not to waste D. no waste 4. —____ higher, and you will see the house. —OK. A. If you stand B. To stand C. When you stand D. Stand 5. Please ___ do it. A. he B. let him C. let he D. him 6. _____ let anyone open the door. A. Dont B. Will C. Not D. No 7. —Don’t be late again. —Sorry, ______. A. I may B. I must C. I will D. I won’t 8. —Call me when you get home. —OK, ____. A. I must B. I can C. I will D. I may 1. —Call me when you get home. —OK, ____. A. I must B. I can C. I will D. I may 2. Jim, _____ me a hand. A. gives