七下can的用法.doc

单元语法：(情态动词can) 情态动词can不能单独作谓语，只能和其他动词原形构成复合谓语，没有人称和数的变化,意思是“能, 会”。can的用法：(1) 肯定句结构：主语 + can + 动词原形 + 其他成分. eg: I can play the guitar. 我会弹吉他。 He can play the guitar. 他会弹吉他。 用以下结构编写句型： 主语+ can dance / swim / sing / draw. 主语+ can+ speak Chinese / English / Japanese. 主语+ can play the guitar /violin / piano / drums. 主语+ can play basketball / volleyball /baseball /football / soccer /tennis /ping-pong / chess / cards. 主语+ can tell / write a story. 主语+ can do Chinese kung fu. (2) 否定句结构：主语 + cant + 动词原形 + 其他成分. eg: I cant play the guitar. 我不会弹吉他。 He cant play the guitar. 他不会弹吉他。 把以下句子改为否定句: He can dance / swim / sing / draw. My mother can speak Chinese / English / Japanese. They can play the guitar /violin / piano / drums. We can play basketball / volleyball /baseball /football / soccer /tennis /ping-pong / chess. / cards His brother can tell / write a story. Her father can do Chinese kung fu. (3) 一般疑问句结构：Can + 主语 + 动词原形 + 其他成分? 肯定回答：Yes, 主语+can. 否定回答：No, 主语+cant. eg: Can you play the guitar. 你会弹吉他吗？ Yes, I can. 是的，我会。 No, he cant. 不，我不会。 Can he play the guitar. 他会弹吉他吗？ Yes, he can. 是的，他会。 No, he cant.不，他不会。把以下句子改为一般疑问句并做肯定否定回答: He can dance / swim / sing / draw. My mother can speak Chinese / English / Japanese. They can play the guitar /violin / piano / drums. We can play basketball / volleyball /baseball /football / soccer /tennis /ping-pong / chess /cards. His brother can tell / write a story. Her father can do Chinese kung fu.(4) 特殊疑问句结构：特殊疑问词 + can + 主语 + 动词原形 + 其他成分? eg: I can play the guitar. (划线部分提问) What can you do? He can play the guitar. (划线部分提问) What can he do? 注：在此种句型转换中，如果是对动词提问，要先把特殊疑问词what写在句子开头，然后用动词do来代替划线部分的动词，并且do必须与划线部分动词的形式保持一致，最后再把新句子变一般疑问句。把以下句子完成划线部分提问: He can dance / swim / sing / draw. My mother can speak Chinese / English / Japanese. They can play the guitar /violin / piano / drums. We can play basketball / volleyball /baseball /football / soccer /tennis /ping-pong / chess /cards. His brother can tell / write a story. Her father can do Chinese kung fu.2. can的用法口诀:情态动词can表能力, 和行为动词不分离；不管主语如何变, can的模样永不变；只要出现情动can,动词原形后面站；一般疑问can提前,否定can后not添。 3. can的用法练习： 1）They can play basketball after class.(变一般疑问句,并作肯定和否定回答.)2）Liu Lin can sing in English.(改为否定句)3）I can play chess . (改为一般疑问句）4）She can speak Chinese .（改为否定句）5）Can your brother play basketball ?（作肯定回答）6）Can Tom and Amy paint ?（作否定回答）7）I can play chess.(变成一般疑问句） 8）She can play the guitar.(变成一般疑问句） 9）They can play basketball.(变为否定句） 10）He can dance.(变成否定句） 11）I can sing and dace. (改为否定句） 对划线部