看一下这句话有无错误You should go to see the doctor twice a year,to check your body if you are healthy.
问题描述：
看一下这句话有无错误
You should go to see the doctor twice a year,to check your body if you are healthy.
答
if 不用改成 whether,因为他们两个在这种情况下可以互用.
你需要把year后面的 , 去掉这样才是一个完整的完美的句子
答
把your body 去掉
答
You should go to a doctor for medical check up twice a year,to check if you are healthy.
a doctor 是任何一位医生
the doctor 是你个人(常看0的医生
答
if 改成 whether