I am a teatch he is a student 中的句子成分

I am a teatch he is a student 中的句子成分 He is a new student.的句子成分 I am a student.He is a student,too（合并成一句） I am tall. he is a student. we are good friends. 上述句子中的谓语动词都 My sister is a student,I am a student I am a student. I, who am a student, is 18 years old 中的 is 不应该用 am 吗 I who a He is a student,so am I 啥意思?尤其是后半句? c语言,逆序输出一句话中的单词入,I am a student输出student a am I am a student from huzhou senior high school 的句子成分 i am being a student. I am a good student