Unit 6 Electricity【重点语法】- 2021-2022学年七年级英语下册链接教材（深圳广州牛津版）

Unit 6 Electricity 教材重点语法知识链接及典型例题 Modal verbs 原文呈现： We can use electricity to do many things. We cannot/can't see electricity. Can you think of an example?Yes, I can. /No, I cannot/can't. May/Can l use your mobile phone? Yes,you may/can./No,you may not/can't. You may/can turn on the TV. You may not/cannot play in the kitchen. You must not/mustn't do that, Benny! We must always be careful with electricity. They must not/mustn't play near the heater. 总结： 情态动词的定义: 情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。 情态动词无人称和数词的变化，后接动词原形。 We can be there on time tomorrow. 我们明天能按时去那儿。 ______________________________我能知道你的名字吗？ ______________________________我们现在就开始吗？ ______________________________你必须遵守校规。 1、can的用法 1. can/could； can’t/couldn’t (否定) 1) 表示能力, 意为“能、会”, 例如： 如：I can speak a little English. -- Can you ride a bike? I can’t swim. -- Yes, I can. / No, I can’t. 2) 表示请求或允许，多用于口语中，意为“可以、能”等 如：You can go home now. 现在你可以回家了 -