so that
So that (conjunction) means used to introduce the purpose or intention behind an action. Example: “Leave a light on so that they can find the door.”
How to Use So that
Learner’s notesIn plain EnglishIt shows why you did something, or what happened because of it.
In speech that is very often dropped: "I came early so I could get a seat." Keeping it is slightly more formal.
Purpose clauses usually take a modal: so that I can, so that they will, so that it would.
Fill the Gap
Can you complete this real example?
Leave a light on _____ they can find the door.
Synonyms
View more →Frequently Asked Questions
What is the difference between so that and in order to?
In order to is followed by a bare verb and needs the same subject: "I left early in order to catch the train." So that is followed by a full clause and can change the subject: "I left early so that she could use the car."
Can you drop the that in so that?
Yes, in the purpose sense, and it is normal in speech and informal writing. Keep that when the sentence is long or the meaning could otherwise be misread as the word so meaning therefore.