Unit 4 Road safety重难点突破-【拔尖特训】2023-2024学年六年级下册英语（译林版（三起））

Unit 4重难点突破 （1） 情态动词can和must的用法 can和must都是情态动词,后面接动词原形, 没有人称和数的变化。 一、 can的用法 1. 表示能力(体力、知识、技能等)或表示请求和允 许。如: Helen can dance. 海伦会跳舞。 Can I go now? 我现在可以走吗? 2. 改为否定句时,在can后加not(cannot),也可写 成can􀆳t。如: Helen can􀆳t/cannot dance. 海伦不会跳舞。 3. 改为一般疑问句时,将can提到句首,句末改为 问号。如: Can Helen dance? 海伦会跳舞吗? 二、 must的用法 1. 表示必须或较为肯定的推测,意为“一定,想 必”。如: You must do your homework first. 你必须先做你的家庭作业。 He must be at home now. 他现在一定在家。 2. 其否定形式 mustn􀆳t/must not表示强烈禁 止。如: You mustn􀆳t run on the road. 你绝不能在马路上奔跑。 3. 改为一般疑问句时,将must提到句首,句末改为 问号。如: Must I finish my homework today? 我今天必须完成我的家庭作业吗? 一、 用must、 mustn􀆳t、 can或can􀆳t填空。(可重 复使用) 1. — Mr Li, I come at 6 o􀆳clock? — No, you needn􀆳t. 2. A blind man see the world. 3. — May I go there? — No, you . 4. Two eyes see more than one. 5. I leave now. Thank you for supper. 6. You smoke here. Look at the sign. 二、 用所给词的适当形式填空。 1. It􀆳s cold. You (can) open the window. 2. We (must) cross the road now. Here􀆳s the red man. 3. He must (finish) his homework before dinner. 4. Must Nancy (wash) the dishes? 5. — Can Mike (run) fast? — Yes. 三、 单项选择。 ( )1. — Can you speak English? — Yes, I . A. can B. must C. do ( )2. The library is closed now. You borrow(借) books today. A. can B. must C. can􀆳t ( )3. You drive on the right side of the road in Beijing. A. can􀆳t B. should C. mustn􀆳t ( )4. You be hungry after a long walk. A. must B. can􀆳t C. need ( )5. You play computer games. You finish your homework before dinner. A. can; mustn􀆳tB. can􀆳t; must C. mustn􀆳t; can􀆳t 􀥈