U2 单元语法讲练（练习PPT）-【支点·同步系列】2024-2025学年七年级下册英语（人教版）

铭文文化 《支点》七年级英语RJ版下册 Unit 2 No Rules,No Order 单元 语法讲练 单元语法讲解 一、祈使句的用法 1.祈使句的概念 用于表示命令、请求、劝告、警告、禁止等 的句子叫作祈使句。祈使句一般以动词原形 开头，通常省略主语yOu,句末可用句点或感 叹号。 K MINGWEN CULTURE 2.祈使句的形式 (1)祈使句的肯定形式： 动词原形（十宾语）十 Have a seat here, do型 其他成分. please..请这边坐。 Be十表语（名词或形 Be a good boy!要做 be型 容词)十其他成分. 一个好男孩！ Let十宾语十动词原 Let me help you.让 let型 形十其他成分 我来帮你。 MINGWEN CULTURE (2)祈使句的否定形式： Don't十动 Don't be late for 以don't开头 词原形十其 school!上学不要迟到！ 他成分 No十名词/ No photos/smoking! 以n0开头 动名词 禁止拍照/吸烟！ K MINGWEN CULTURE 二、情态动词can,must与have to的 用法 表示能力，意为 I can play the guitar. “能：会” 我会弹吉他。 can 表示请求或允许， You can't park here. 意为“可以” 你不能在这里停车。 We must keep the 表示主观意愿，意 room clean.我们必须 为“必须：禁止” 保持房间干净。 must Children mustn't 否定形式mustn't, play with fire.孩子 意为“不准” 不准玩火。 意为“不得不”，用于 We have to eat in the 强调客观需要，否定 have to dining hall.我们不得 形式为do/does/did 不在餐厅吃饭。 not have to MINGWEN CULTURE 单元语法精练 一、用can,can't,must,have to或don't填空 1.Tony speak Chinese,but not very well. 2.You follow these school rules. They're good for you to have a good habit. 3.They go to school by boat, because there's no bridge over the river. 4. make so much noise.It's time for class. 5.Look at the sign(指示牌)！We swim in the river.It's too dangerous. MINGWEN CULTURE 二、按要求完成下列句子 L.You must eat in the dining hall..(改为祈使句) the dining hall. 2.You can't watch TV on school nights.(改为 否定祈使句) TV on school nights. 3.Don't take photos here.(改为同义句) here. 4.No talking in the library..(改为同义句) in the library. 5.Open the door,please!(改为否定句) the door,please! MINGWEN CULTURE 三、单项填空 1.(2024赣州宁都期中) sleep too late. It's bad for your health. Don't B.Not C.Please not D.Do 2.（2024高安期中）一Ican't stop eating so much ice cream. -For your health,I'm afraid you A.can B.have to C.must D.could 巛 MINGWEN CULTURE