1、can句型: 肯定句: I can hear a car. Kitty can smell a lemon. 否定句: I can’t hear a car. Kitty can’t smell a lemon. 一般疑问句: Can you hear a car? Can Kitty smell a lemon? 肯定回答: Yes, I can. Yes, she can. 否定回答: No, I can’t. No, she can’t. 划线提问: What can you hear? What can Kitty smell?