102、level3-unit1-part4 dialogue-

A: What's wrong?
B: I can't walk.  My left foot hurts.
A: Is it broken?
B: I don't know if it's broken, but it sure hurts.

问：What can't he do? →答：He can't walk

B: There's one way tofind out if it'sbroken.
A: How?
B: You need to see a doctor.  
     The doctor can X-ray your foot.

问：Who can X-ray his foot?→答：A doctor can X-ray his foot.

A: OK, let's go.  
     I can't walk by myself.
     Can you help me into a taxi?
B: Sure, I'll call a taxi.
      I'll get you to a hospital as soon as possible.
B: Thanks.I sure hope it isn't broken.
A: We’ll find out soon enough.

问：How is he going to get to a hospital?→答：They are going to go there by taxi.