"Klingons and Ferengi are humanoids."
Translation:yoqpu' chaH tlhInganpu''e' verenganpu''e' je.
In an English sentence, the grammatical subject goes before the verb. Thus, in this English sentence, "Klingons and Ferengi" are the subjects.
In a Klingon sentence, the grammatical subject goes after the verb. Thus, in this Klingon sentence, tlhInganpu' verenganpu' je are the subjects.
Because we are using a pronoun as the verb, explicitly stated subjects like this must each be marked with -'e'. Thus, in this sentence, they are actually written as tlhInganpu''e' verenganpu''e' je.