habit既可作可数名词也可作不可数名词。当habit的含义为“习惯”、“瘾”、“长袍”、“道服”时，是可数名词，复数形式为habits；当habit的含义为“惯常行为”、“习性”时，是不可数名词。
habit的中文含义及用法介绍
1、作为名词时，意为习惯;惯常行为;习性;(吸毒、喝酒、抽烟的)瘾。
例句：You need to change your eating habits.
你得改变你的饮食习惯。
I'm a creature of habit .
我这人做事总是凭习惯。
He began to finance his habit through burglary.
他开始以盗窃来满足他的毒瘾。
He has an endearing habit of licking his lips when he's nervous...
他有个一紧张就舔嘴唇的可爱习惯。
She became a prostitute in order to pay for her cocaine habit.
她以娼养吸。
Research indicates that eating habits are changing fast.
研究显示，饮食习惯正迅速改变。
He turned to crime to support his drug habit.
他为维持吸毒的恶习而走上犯罪的道路。
Her most annoying habit was eating with her mouth open.
她最让人讨厌的习惯就是张着嘴吃东西。
He always goes to bed at ten ─ he's a creature of habit.
他总在十点钟上床睡觉，是个严守生活习惯的人。
It's all right to borrow money occasionally, but don't let it become a habit.
偶尔借点钱倒没关系，但不要养成习惯。
You'll have to unlearn all the bad habits you learned with your last piano teacher.
你必须丢掉你的前任钢琴老师所教的一切坏习惯。
Data mining is used to analyse inpiduals' buying habits.
数据采掘被用来分析个体的购买习惯。
The discipline of studying music can help children develop good work habits.
音乐学习中的训练可以帮助孩子们培养好的工作习惯。
2、作为及物动词时，意为给…穿衣服;打扮。
