"My father does the same thing every mornin. He gets up at 6. He washes,brushes his teeth and combs his hair."
1,Why his father does many things, but the "thing" is singular?
2,Why is "washes",not "washes his face"?

1)the same thing :可理解同样的诸事，视为一类。要不就记住the same thing 中thing不加S。
2）原句washes指洗东西（洗手;洗脸;洗澡;洗衣
），洗脸一般要用及物动词，像下句表示。否则要根据上下文，判断具体行为。此处可作洗脸、洗衣等解释。

及物动词：洗,洗涤
She washed her face and hands, then went downstairs.
她洗了脸和手之后走下楼去。

不及物动词 vi.： 洗手;洗脸;洗澡;洗衣
He likes to wash in cold water.
他喜欢用冷水洗澡。