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Unit 5 Can you come to my party? Section A Period 2 (3a — 4) A: Can you come to my birthday party? B: Sure, I’d love to. birthday party A: Can you go to the concert? B: I’m sorry, I can’t. I have to study for the test. go to the concert study for the math test A: Can you go to the movies? B: I’m sorry, I can’t. I have to go to the doctor. A: Can he go to the movies? B: No, he can’t. He has to go to the doctor. go to movies go to the doctor A: Can you go to the zoo? B: Sorry, I can’t. I have to have a piano lesson. A: Can she go to the zoo? B: No, she can’t. She has to have a piano lesson. go to the zoo have a piano lesson A: Can you play computer games with me? B: Sorry, I can’t. I have to help my mom. A: Can she play computer games with me? B: No, she can’t. she has to help her mom. play computer games help my mom A: Can you play soccer with me? B: Sorry, I can’t. I have to visit my grandma. A: Can she play soccer? B: No, she can’t. She has to visit her aunt. play soccer visit my grandma can和have to的用法 1. can可以表示能力, 意思是“能,会”, 在过去时中用could 。 2. can还可以表示请求许可, 在这一用法中, can和could都表示现在时态, 但could比can语气更加委婉。 can (could)用在一般疑问句中表示请求许可时,其肯定回答一般为 “Sure, I’d love to.”或“Yes, please.”；否定回答通常为“Sorry, I can’t.”。 3. can还可以表示可能性, 常用于否定句中。 | 
