(
课件网) 五年级（上册） Lesson 2 学习祈使句 Let’s chant. Warm up Sing your way home Sing your way home. At the close of the day. Sing your way home. Drive the shadows away. Smile every mile for wherever you go. It will brighten your road. It will lighten your load, If you sing your way home. 知识讲解 Let’s learn. 祈使句的概念 表示请求、命令、建议、祝愿、邀请或要求的句子叫祈使句。用于祈使句句首的动词总是用原形，不能用其他形式。如： Shut the door!?把门关上! Be quiet! 安静！ Let them go by train.?叫他们坐火车去吧。 当表示礼貌的请求时，在句首或句尾加please。 Open the door, please. Please give out the books. 知识讲解 Let’s learn. 祈使句的主语通常为第二人称(you)，但一般都被省略。 当要给祈使句加上一个称呼时，可以加在句首或者句尾。 Sam, shut the door! Close the window, Sam. Stand up, everybody!?全体起立! 知识讲解 Let’s learn. 祈使句的否定式 构成祈使句否定式的方法很简单，那就是在动词原形前加don’t。 Open the window.?把窗户打开。 →Don’t open the window.?别把窗户打开。 Come next Monday.?下周星期一来。 →Don’t come next Monday.?下周星期一别来。 知识讲解 Let’s learn. 祈使句的否定式 在日常生活中，我们还会见到No+v-ing/n.形式的祈使句，如： Don’t smoke.=No smoking. Don’t take photos=No photos. 知识讲解 Let’s learn. Let 的祈使句 肯定句：Let’s sb. do sth. 否定句：Let sb. not do sth. Let’s tell him the truth.?我们把实情告诉他吧。 →Let’s not tell him the truth.?我们不要把实情告诉他。 知识讲解 Let’s say. Keep quiet! 知识讲解 Let’s say. No spitting! 知识讲解 Let’s say. Watch your step! 知识讲解 Let’s say. No littering! 知识讲解 Let’s say. Don’t waste food! 知识讲解 Let’s say. NO EATING OR DRINKING 知识讲解 Let’s say. No dogs 知识讲解 Let’s say. 知识讲解 Let’s practice. ____ late again, Lin Tao! A. Isn’t B. Don’t be C. Don’t D. Not be 知识讲解 Let’s practice. —I’m leaving now. — ____ you turn off the lights A. To make sure B. Make sure C. Made sure D. Making sure 知识讲解 Let’s practice. Don’t ____. A. sad B. is sad C. are sad D. be sad 知识讲解 Let’s practice. Let’s ____ to a restaurant to have lunch. A. go B. to go C. going D. goes 知识讲解 Let’s practice. Tom, ____ afraid of speaking in public. You are no longer a small boy. A. not be B. not to be C. be not D. don’t be See You!
