In Lesson 1 we looked at cmene, Lojban names.
cmene always label one particular thing. Just as in English, if I say "Mary",
I mean one particular person called Mary, no matter how many people
there are in the world called Mary, so in Lojban, meiris. can
only refer to one person. This means that cmene can never
stand for classes of things (like "person", "dog" or "computer") or for
relationships between things (like "loves", "gives" or "is inside").
Relationships are the key to Lojban, and words describing a relationship
are called selbri. A selbri is not a type of word (like a "verb" in English), it is
something that some types of word can do. Various types of word can act as selbri, but cmene, as we've seen, can't.
The main type of word used as a selbri is a gismu, or root-word. These are the building blocks of Lojban vocabulary. gismu are easy to recognise, because they always have five letters, in the form
Which of the following Lojban words are:
Now we can recognise a gismu, let's see what we can make it do. dunda means "give", and as a selbri describes a relationship between a giver, something they give, and someone who receives it. Let's say we have
three people, Maria, Claudia and Julia. If we say
la mari,as. dunda la .iulias. la klaudias.
we mean that Maria gives Julia to Claudia—let's say Julia is a baby, as since the abolition of slavery, we don't normally give people as presents. In English you can "give" someone in marriage, but that's
a culture-specific metaphor, and Lojban discourages that kind of thing—it's an example of malglico ("bloody
English"), transferring features of English into Lojban which don't
work. If, on the other hand, we say
la .iulias. dunda la mari,as. la klaudias.
we mean that Maria is the baby, and Julia gives her to Claudia. How do
we know this? English uses the word "to" to indicate the receiver, and
in some other languages (like Latin or Turkish) the form of the words
themselves change. In Lojban, as in logic, we have what is called
place-structure. Place-structure means that
where "x" means someone or something. Even if we just say dunda on its own, we still mean that someone gives
something to someone; we just aren't interested in (or we already know who or what.
We can say, then, that dunda has three "places". We can think of places as slots which we can, if we want, fill with people, objects, events or whatever. These places are called sumti in Lojban (easy to remember, as it sounds a bit like someone saying "something" and chewing off the end of the word). Again, a sumti is not a type of word, it is something a word does. The simplest Lojban sentence is a bridi, i.e. a selbri and a bunch of sumti. In other words,
bridi = selbri + sumti
Note for logicians and computer programmers: for selbri read "function"; for sumti read "argument."
How many sumti can a selbri describe? The number depends on the place structure of the word we use for the selbri (there are ways of tagging on extra sumti, which we'll cover in later lessons). A gismu has a set number of places; as we've just seen, dunda has three. The number of places varies from one to a staggering (and rare) five. Here are some examples.
If all these places sound a bit daunting, don't worry—you don't have to memorise all of them (in fact nobody does). There are a few cases where it's worth learning the place structure to avoid misunderstanding, but usually you can guess place structures using context and a few rules of thumb.
Try to guess the place structure of the following gismu. You probably won't get them all, but you should be able to guess the most important ones. Think of what needs to be in the sentence for it to make sense, then
add anything you think would be useful. For example, with klama, you need to know who's coming and going, and
although you could in theory say "Julie goes," it would be pretty meaningless if you didn't add where she goes to. Where she starts her journey, the route she takes and what transport she uses are progressively less important, so they occupy the third, fourth and fifth places.
So far we've seen how a gismu can express a relationship between two or more cmene, so we
can say things like
But if we don't know her name, how can we say "Bill likes the woman"? If we say la bil. nelci la ninmu, we mean that Bill likes someone whose name is "Woman". What we say, in fact, is
la bil. nelci le ninmu
What does le mean here? We translated it into English as "the", but that isn't quite it. The best way to think of it
is "the thing(s) I call". la + cmene is like a permanent label (Bill is always Bill). le +
gismu is more like a temporary label~~I have something in mind, and choose to call it "woman". Probably she really is a woman, but with le this doesn't have to be so~~we could be talking about a transvestite or a stone that looks a bit like a woman. There are other articles which can show that it's a real woman, or a typical woman or whatever, but we'll leave those alone for the time being.
One more word is sometimes necessary when using gismu as sumti: cu. This doesn't carry any meaning, but separates the selbri from whatever comes before it. It's not necessary with cmene, because they can't run
over into anything else, but le ninmu klama doesn't mean "The woman goes"; ninmu and klama get run together, with the result that it means "The woman-type-of goer" (maybe a female traveler). What we say
instead is
le ninmu cu klama
IMPORTANT! cu does NOT mean "is" (as in "The woman is going"). In fact it doesn't mean anything—it's just there to indicate that there's a selbri coming. You can also use cu after a cmene, but it isn't usually necessary. Similarly, you don't need cu after mi (I / me), do (you, the person I'm talking to) or any words like this ("pro-sumti", in Lojban jargon).
Add cu to the following Lojban sentences where necessary, then work out what they mean.
We've seen that if we don't need all the places (and we rarely do), then we can miss out the unnecessary ones at the end of the bridi. We can also miss out the first place if it is obvious (just as in Spanish). However, it sometimes
happens that we want places at the end, but not all the ones in the middle. There are a number of ways to get round this problem.
One way is to fill the unnecessary places with zo'e, which means "something not important". So ''la suzyn.
klama la paris. la berlin. zo'e le karci tells us that Susan goes to Paris from Berlin by car, but we're not interested in the route she takes. In fact zo'e is always implied, even if we don't say it. If someone says klama'', what
they actually mean is zo'e klama zo'e zo'e zo'e zo'e but it would be pretty silly to say all that.
Most people don't want more than one zo'e in a sentence (though there's nothing to stop you using as many as you like). A more popular way to play around with places is to use the place tags fa, fe, fi, fo and
fu. These mark a sumti with a certain place, no matter where it comes in the sentence. For
example,
fu marks le karce as the fifth place (the means of transport). Without fu, the sentence would mean "Susan goes to the car."
With place tags you can also swap places around. For example,
Again, you probably don't want to overdo place tags, or you'll end up counting on your fingers (although they're very popular in Lojban poetry—place tags, that is, not fingers).
A final way to change places is conversion, which actually swaps them round, but we'll leave that for another lesson. There are no rules for which method you use, and you can use them in any way you want, so long as the person you're talking to understands.
In this lesson we've covered the following points:
Although there is a lot more to Lojban sentences than this, you now have the basics of Lojban grammar~~the rest is just a matter of adding things on to it~~different articles, tags, times, numbers and so on.
Note the different place structures of cusku and tavla. With cusku the emphasis is on communication; what is communicated is more important than who it is communicated to. Quotes in e-mails frequently start with "do cusku di'e" (di'e means "the following") as the Lojban equivalent of "You wrote" (ciska - "write" - places more emphasis on the physical act of writing). With tavla the emphasis is rather more on the social act of talking—you can tavla about nothing in particular.
Note that I have translated these sentences in the present tense (since in English you have to choose a tense) but they could be in any tense, so le cipni cu vofli could also mean "The bird flew", for example. We'll look at how Lojban expresses tense in later lessons; just remember that you don't actually need it—normally it's obvious whether an action takes place in the past, present or future.