Three words(转载)

Jack is six years old.He is old enough to go to school.On the first day,his teacher teaches him three words,"I,you,he'.Then the teacher says‘I am your teacher.You are my stedent.He is your chassmate,'When school is over,Jack goes home.His mother asks him,"What does your teacher teach you today?'Jack says with a smile,"Listen,Mum and Dad,I am your teacher.You're my student.He is yourchassmate.'His mother says,"No,dear.You're wrong.'Then she says,"I am your mother.You're my son.He's you father.'The next day,Jack's teacher asks Jack to make sentences with",I,you and he.' 　
　　Jack stands up and says."I'm your mother.You're my son.He is your father.' All the students in Jack's class laugh.