Unit 2 Grammar Focus(3a-3d)（作业课件）-【优翼·学练优】2025-2026学年七年级英语下册同步备课（人教版）

该初中英语课件聚焦祈使句（肯定/否定结构及注意事项）和情态动词can/must/have to的用法，课堂导入从基础语法结构切入，先讲解祈使句的Do型、Be型、Let型肯定结构及Don't+动词原形等否定形式，再过渡到情态动词功能，构建从结构到应用的学习支架。 其亮点是语法讲解与情境练习结合，通过语法精练（填空、句子转换）、微语篇语法（信件填空）和课时精练（完形填空融入文明礼仪），培养语言能力、思维品质和文化意识。如微语篇让学生在真实信件中运用情态动词，完形填空强调乘车礼仪，帮助学生巩固语法并形成文明素养，教师可借助系统练习提升教学效果。

优翼 优图 学练优·七年级英语下 优翼 第三课时 Grammar Focus(3a~3d) 优留 语法精讲0 祈使句一 Do型，即以行为动词的 开头。如：Come here.. 肯定结构 Be型，即以be动词开头。如：Be quiet! Let型，即以动词let开头。如：Let me do it.. +动词原形+其他.如：Don't be late for school. 析 Don'tlet+宾语+动词原形(+其他)./Let+宾语+not+动词原形(+其他).如：Don'tlet her go./Let her not go.I 否定 No+ 结构 /动名词如：No photos./No parking. 用never代替don't来加强语气。如：Never give up! 为表达委婉的语气，可在句首或句尾加上please。please在句尾时要用逗号与句子其他部分隔开。 如：Please sit down.=Sit down,please. 注意 祈使句中的动词（词组）有时也可以省略。如：Come this way,please.=This way,please.. 优鼍 情态动词 can表示请求、允许，意为“可以”。如：Can I bring the new watch to school?? can 表示拒绝对方的请求或不同意、不允许，意为“不可以”。 如：Can I watch TV?-No,you can't. 强调说话者的主观意愿，意为“必须”。如：I must go home now because it'slate.. 情态动词 注意：由must引出的一般疑问句，肯定回答常用must,否定回答常用needn't/don't have to。 常用于一般现在时，无人称和数的变化。如：I/He/You/They must work hard. must 意为“不准；禁止”。如：You mustn't swim in the river. | 强调客观需要，意为“不得不”。如：It's too late..I have to take a taxi. 可以用于不同的时态，有人称和数的变化。如：She has to wear a uniform at school.. have to don't have to表示“不必”。如：You don't have to get up early on weekends. 优翼 11语法精练10 I.根据句意用括号内所给单词的适当形式填空。 1.(be)on time for school,please. 2. (not run)in the school hallways. 3. (remember)to bring your book. 4.Let's (play)football after school. 优翼 5.No (litter)!It's our duty to keep our classroom clean. 6.The library closes at 9:30 p.m.and everyone (have)to leave by then. 优留 Ⅱ.按要求完成句子，每空一词。 1.Open the door.（改为否定句) the door. 2.不要让他在河里游泳！（根据汉语意思完成 句子)】 Let him ！in the river! 优留 3.请穿校服上学。（根据汉语意思完成句子） the school uniform to school. 4.保罗这周未得上班。（根据汉语意思完成句子) Paul work this weekend. 5.Must I do my homework now?（作否定回答) you 优翼 Ⅲ.微语篇练语法 用can/must/have to的适当形 式填空。 Dear Mr Brown, I'm a 12-year-old girl.There are too many rules in my family.I 1. get up at a quarter past six.Mum says that I 2. have breakfast at home.After school,I 3. play with my friends because I need to 优鼍 finish my homework first.On Friday nights,I 4. play the violin for one hour.I 5. clean my room and learn to play chess on Saturdays.I don't like these rules at all. What can I do?I need your help. Li Hua