They have a habit of doing that.

都是这样的我穿着新伯鲁提 皮鞋。

It was named Catherine; but he never called it the name in full, as he had never called the first Catherine short; probably because Heathcliff had a habit of doing so.

孩子名叫凯瑟琳；可他从来不叫她全名，正如他也从来不用简名叫那头一个凯瑟琳；这大概是因为希刺克厉夫有这样叫她的习惯。