Purpose
What is someone trying to achieve by doing this?
Merkitys
Purpose links an action to what someone wants to achieve by doing it. The intended result may or may not happen. Languages can use special words, verb forms, or endings, while some rely on context without a separate purpose marker. Unlike Cause, Purpose looks ahead to a goal rather than explaining what led to the action.
Näin tunnistat sen
Find the part that answers what someone does the action to achieve, whether or not that goal is reached.
Opiskeltavalla kielelläsi
English often uses to followed by the base form of a verb, its form without endings, to show the purpose of an action. So that introduces a purpose with its own subject and often a verb such as can or could. For followed by a noun can show what something is intended for, as in money for lunch.
I went to the library to study.
The same person goes to the library and studies.
I'll leave the key here so that you can get in.
So that allows a different subject: I leave the key, and you get in.
This bag is for wet clothes.
For followed by a noun phrase shows the bag's intended use.
Learners whose language uses the same marker for goals and intended uses may write for study instead of to study. Learners whose language normally expresses purpose with a separate subject and verb may overlook the shorter to + verb form when the same person does both actions.