Required / Hidden Placeholder
Does the language require something even if another language would omit it?
Significado
A structural slot that must be filled or understood: dummy subject, copula, article, classifier, expletive, pronoun, or support word.
Como identificar
Notice places where your language says nothing but the target language needs a visible item, or the opposite.
Exemplos
it|there|do|be|classifier
it rains|there is|do you know
It is raining.
Visual guide
Thought: RAIN Grammar frame: [Subject] + [be] + raining English fills the slot: [It] is raining It = placeholder, not actor
Same idea, slots differ: English: [It] is raining Zero OK: [∅] raining English: [There] is a book Other: [∅] book exists Check required items: subject, be, article, CL, do
Vista por língua
Na tua língua materna
Portuguese normally has no dummy subject in weather expressions, but some structures require articles, copulas, or pronoun slots.
Está chovendo.
It is raining.
Na tua língua de aprendizagem
English often requires subjects and placeholder words like it and there even when they have little meaning.
It is raining.
it = required placeholder
Learners may omit dummy subjects or misunderstand there is/it is patterns.
Good transfer potential
This block behaves relatively similarly, so you can transfer intuition more safely between the two languages.