Words left out but understood
What is understood even though we do not say it?
Meaning
Words can be left unsaid when the listener can recover them from the situation or the rest of the sentence. This avoids needless repetition. Some languages often leave subjects unspoken, while others normally require them, and languages also differ in which other words can be omitted. Unlike Dummy subject, this block is about understood words that are absent, not an empty word that must be present.
How to spot it
Look for a person, thing, action, or other part of the message that the listener understands although no word directly expresses it.
In your native language
English usually keeps an expressed subject and a verb in full statements, even when the meaning is clear. Short answers can use an auxiliary verb, a helper such as can or do, instead of repeating the rest. Shared words can also be left out in linked sentences and informal conversation.
Can you swim? — Yes, I can.
Swim is understood after can and does not need to be repeated.
Ben ordered soup, and Mia a salad.
Ordered is understood in Mia's part of the sentence.
Want some tea?
In this informal offer, Do you is left out.
In your learning language
Spanish often leaves the subject unexpressed when the verb ending and context make it clear. Replies and linked sentences can also leave out repeated words that the listener can recover. A known object is often expressed by a short pronoun such as lo or la rather than simply left out.
Ayer llegamos a las ocho.
We arrived at eight yesterday.
The verb ending identifies the subject as we; nosotros is not needed.
Ana pidió té y Luis, café.
Ana ordered tea, and Luis ordered coffee.
Pidió is understood in the second part and is not repeated.
¿Has visto mis gafas? — Sí, las he dejado en la mesa.
Have you seen my glasses? — Yes, I left them on the table.
The subject yo is unspoken, but las still refers to the glasses.
Learners whose language requires a spoken subject may add pronouns to nearly every sentence. Learners whose language freely omits understood objects may leave out a short object pronoun that Spanish needs.