语法点四 情态动词can-【培优计划·语法阅读培优】2023-2024学年三年级英语上册配套课件ppt（外研版一起）

1 2 语法点四 情态动词can 3 语法一点 通读一读，学会情态动词can的用法 含义：can可以表示能力，意思是“能，能够”；也可以表示许可，意思是“可以，能”。 链接教材功能句式： 1.You can't run fast. 你不能跑得快。 2.I can jump far. 我能跳得远。 3.What can you see？你能看见什么？ 01 肯定句式 主语+can+动词原形+其他. 例：You can have a cake. 你可以吃一块蛋糕。 4 02 否定句式 主语+can+not+动词原形+其他. 例：You can't have a cake. 你不可以吃蛋糕。 03 疑问句式 一般疑问句：Can+主语+动词原形+其他? 例：Can I have a drink？ 我能喝一杯饮料吗？ 特殊疑问句：特殊疑问词+can+主语+动词原形+其他? 例：What can you see？你能看见什么？ 5 04 记忆小口诀 can表能力和许可，但与实动不分离。不管主语怎么变，can的样子永不变。只要句中出现can,动词原形后面站。一般疑问can提前，否定can后not添。问答语句有你我，两个人称要互换。 名师点睛 1.表能力 例：I can dance. 我会跳舞。 I can't swim.我不会游泳。 2.表许可 例：Can I come in？我能进来吗？ 6 多学一点 情态动词是表示说话人的语气和态度的动词。情态动词没有人称和数量的变化。常见的情态动词有can、could、may、must、will、would、shall、should、need等。 7 语法自主 测测一测，看你掌握了多少 Ⅰ.单项选择。（难度☆） 1.—Can you sing and dance? —______( ) A.Yes, I do. B.No, I can't. C.No, I can. 2.—Can he do the long jump? —______( ) A.Yes, he do. B.No, he can. C.No, he can't. 3.Amy can ______.( ) A.playing drums B.play drums C.play the drums √ √ √ 8 4.I ______ ride a bike. But I ______ drive a car.( ) A.can't; can B.can't; can't C.can; can 5.Lingling ______ play the piano, but she can play the guitar.( ) A.can B.isn't C.can't 6.You can ______ in the library.( ) A.run fast B.read books C.sing a song 7.—______ —He can play football.( ) A.Can he play football? B.What can he do? C.What can she do? √ √ √ √ 9 8.—______ —Oh, thank you. I want to have an ice cream.( ) A.Can I help you? B.Can you help me? C.What can you do? 9.Steve ______ play football with his friends. He broke his leg.( ) A.can B.don't C.can't 10.—It's raining outside. Stay at home, please. —It's OK. I can ______ an umbrella.( ) A.get B.gets C.getting √ √ √ 10 Ⅱ.按要求完成下列句子。（难度☆☆） 1.I can swim fast. （改为否定句） I _____ swim fast. can't 2.You can have an ice cream. （改为一般疑问句） _____ __ have an ice cream? Can I 3.Can I come in?（做肯定回答） _____________ Yes, you can. 4.Amy can run fast. （对画线部分提问） ______ ____ Amy do? What can 11 5.What can you do? （根据实际情况回答） __________________