参考资料：https://idolinguo.org.uk/bgrammar.htm
定冠词
la
后缀
- 名词：-o；复数：-i
- 形容词：-a
- 副词：-e
- 动词：-ar 为不定式
- 现在时态：-as
- 过去时态：-is
- 未来时态：-os
- 条件：-us，举例：il venus se il povus = he would come if he were able
- 祈使：-ez
- 动词扩展
- 主动现在分词：-anta，类似于英语的 -ing，举例：fluganta uceli = flying birds; persono skribanta letro = a person writing a letter; kantanta puerino = a singing girl.
- 主动过去分词：-inta，举例：fluginta uceli = birds which have flown; hundo dorminta = a dog which has slept.
- 主动未来分词：-onta，举例：stono falonta = a stone that is going to fall; la puerino kantonta = the girl who is going to sing.
- 被动现在分词：-ata，举例：letro skribata = a letter (that is) being written; vorto kantata = a word (being) sung.
- 被动过去分词：-ita，举例：letro skribita = a letter (that has been) written; lavita vesti = washed clothes;
- 被动未来分词：-ota，举例：etro skribota = a letter (that is going) to be written; la jetota bulo = the ball that is (yet) to be thrown.
- 主动变被动：在根词和动词后缀之间添加 -es-，举例：vidas means ‘sees’, but videsas (vid-es-as) means ‘is seen’. So an alternative, shorter way of saying ni esas trovota is ni trovesos = we will be found. Similarly, ol trovesis = it was found.
- The suffix -ab- is used with verbs as an optional substitute for equivalent longer forms ending in -inta, and preceded by the appropriate form of the verb esar (to be). This is shown by the following examples: skribabis (sbrib-ab-is) = esis skribinta = had written; vendabos (vend-ab-os) = esos vendinta = will have sold; vidabas (vid-ab-as) = esas vidinta = has seen (‘is having seen’).
- 名词变形容词：-al-
- 形容词变动词：-ig-
- 名词变动词：-ag- indicating action; -iz- indicating addition of one thing to another