量词的搭配
Matching classifier to noun

一本书、一张桌子、一把椅子、一条鱼、一只猫、一件衣服——这些搭配你早就背下来了，说的时候也不用想。上一课说清楚了量词为什么存在，这一课回答另一个问题：为什么是这个量词，不是那个？

一本书, 一张桌子, 一把椅子, 一条鱼, 一只猫, 一件衣服 — you learned these pairings by heart in level 3 and no longer think about them. The last lesson explained why classifiers exist at all. This one answers a different question: why this classifier and not another?

没有一条规则能从名词的意思算出量词来。搭配是记在词典里的，不是推出来的。所以学新词的时候，量词要跟着一起进本子：说一朵花、一座山，不说一个花、一个山。

No rule computes the classifier from the meaning of the noun. The pairing is stored in the dictionary, not derived from anything. So when you learn a new word, the classifier goes into the notebook with it: 一朵花 and 一座山, never 一个花 or 一个山.

理据帮你猜，可是不保证。条的核心是细长、能弯：路、河、裤子、鱼。张的核心是能摊开的平面：纸、桌子、床、地图。座给不动的大东西：山、桥、楼。辆给有轮子的：车、自行车。猜错了也不要紧，个几乎哪儿都能顶一下，只是听起来不地道。

The motivation helps you guess but guarantees nothing. 条 is at heart long, thin and bendable: 路, 河, 裤子, 鱼. 张 is a surface you can spread out: 纸, 桌子, 床, 地图. 座 takes large immovable things: 山, 桥, 楼. 辆 takes anything on wheels. And if you guess wrong, 个 will carry almost any noun — it simply does not sound native.

这里要分清两件事：一个杯子数的是杯子本身，一杯茶数的是茶。杯子是名词，前面得用个；杯是临时借来的量词，后面跟着被装的东西。碗、瓶、盘、桌子、屋子都可以这么用。叫临时，是因为它们本来是名词，随时可以变回去。

Keep two things apart: 一个杯子 counts cups, 一杯茶 counts tea. 杯子 is a noun and needs 个 in front of it; 杯 is a container lent out as a measure, and what follows is the stuff inside. 碗, 瓶, 盘, 桌子, 屋子 all work this way. They are called 临时 because they are nouns on loan and can go back at any moment.

狗又是动物又是细长的，所以只和条都有人说，意思差不多。衣服就不一样了：一件衣服是一件，一套衣服是配好的一整套；量词换了，数的东西也换了。这正是个体量词跟集合量词的分别在真实句子里的样子。

A dog is both an animal and a longish thing, so 一只狗 and 一条狗 are both heard and mean much the same. Clothes are different: 一件衣服 is one garment, 一套衣服 a matched outfit. The classifier changed and so did what is being counted — the individual / collective split of the last lesson, seen in a real sentence.