用英语说就是,而没有看病的时候是:toseedoctor如果要纯碎表达去看医生去看医生就是去看病
You must go to see the doctor in 3 point 45.
You have to go to see a doctor in 3:45.
You have to see a doctor at 3:45
You have to see the doctor at three past fourty five.