In Order + Infinitive
Stating purpose
Purpose – in order / so that
| IN ORDER — PURPOSE | SO THAT — PURPOSE | ||||
|---|---|---|---|---|---|
Use in order to introduce an infinitive clause stating purpose. The statement answers the question: Why? Optionally, shorten in order + infinitive to just the infinitive (to + verb). |
Use so or so that to introduce a clause stating purpose. The clause commonly includes can or could. (Do not place a comma before so.) |
||||
SUBJECT & VERB The doctor operated |
IN ORDER (optional) in order |
INFINITIVE CLAUSE to save his patient's life. |
SUBJECT & VERB The doctor operated |
SO / SO THAT so (that) |
CLAUSE with MODAL he could save his patient's life. |
A patient stays in a hospital |
in order |
to get medical care. |
A patient stays in a hospital |
so (that) |
s/he can get medical care. |
A nurse comes every hour |
in order |
to check on a patient. |
A nurse comes every hour |
so (that) |
s/he can check on a patient. |
Review: Showing Cause & Effect vs. Purpose
Advanced note: in traditional grammar, "to" is part of the infinitive verb form; however, in modern linguistics "to" is a subordinator related to the entire clause not just the verb (which is base form). See Infinitivals

Common Mistakes
| ERROR | FIX |
|---|---|
Why did you come here?
|
Why did you come here? |
*Yellow highlighted words are examples of incorrect usage.
Pop-Q – "Purpose"
Infinitive Clauses
Introductory clauses
Emphasizing purpose
| EMPHASIS PLACEMENT | NORMAL PLACEMENT |
|---|---|
|
|
To practice typing, I often go to the computer lab. |
I often go to the computer lab to practice typing. |
To find information, I always go the the library lab. |
I always go the the library lab to find information. |
To get an answer to a difficult problem, I ask my professor. |
I ask my professor to get an anwer to a difficult problem. |
Infinitive Clause
Purpose vs. Unexpected
| PURPOSE | UNEXPECTED EXPERIENCE | ||
|---|---|---|---|
An infinitive followed by a noun phrase expresses purpose. The actions in the main clause and the infinitive clause occur in the same time frame. ("in order to") |
An infinitive with a verb such as — see, hear, smell, find, discover — and followed by a clause expresses an unexpected or surprising experience. This wording is particularly common in narration and joke telling. The actions in the main clause and the adjunct clause occur in different time frames. ("and unexpectedly" *) |
||
MAIN CLAUSE Steve enters his office |
INFINITIVE CLAUSE to find his co-workers. (present tense narraration) |
MAIN CLAUSE Steve enters his office |
INFINITIVE CLAUSE to find his co-workers talking about him. |
A man walks into a bar |
to get a drink. |
A man walks into a bar |
to see a nude woman sitting at the bar. He asks… |
The scientist returned to his lab |
to discover a cure for cancer. |
The scientist returned to his lab. |
to discover everyone had already left |
The police roped off the area |
to find a bag which might contain a bomb. |
The police roped off the area |
only to find the bag contained a half-eaten sandwich not a bomb. |
We went to the station. |
to catch the train. |
We went to the station |
only to see the train leaving! (disappointment) |
The European Union worked out a deal |
to help Greece's recovery. |
The European Union worked out a deal |
only to hear the Prime Minister would need to hold a national referendum on whether to accept it |
rope off (v.) – surround an area with rope, mark an area for no access
*The nonfinite infinitival clause is an adjunct clause which can be restated as "and unexpectedly — see, hear, smell, find, discover — something happening."
Huddleston, Rodney and Geoffrey K. Pullum."Catenative complements, adjuncts, and coordinates: Adjuncts of result"A Student's Introduction to English Grammar. Cambridge: Cambridge University Press, 2002 (1224) Print.
Practice 1
Indicating Purpose
- Select the word from each menu that best completes the sentence.
- Compare your response to the answer by clicking the "check" button to the right.
Practice 2
Profile Pictures with Character (advanced)
Purpose, Means and Method
- Select the response from each menu that best completes the sentence.
- Compare your response to the answer by clicking the "check" button to the right.
analyst (n.) – a person who collects and interprets statistical data in order to advise others, researchers
be effective (n.) – be successful, and working in the way that is intended
show a little skin (expression) – uncover some leg, arm, neck or breast
"The 4 Big Myths of Profile Pictures." OKTrends.com. 2011. < http://blog.okcupid.com/index.php/the-4-big-myths-of-profile-pictures/> 28 May 2011.
Feedback
#11 — be effective in is a verb + preposition used before a gerund Verb Phrs + Gerunds
#12, #14, #16, #19 — (in order) to introduces an infinitive clause stating purpose (Why?) "in order to verb"
#13,# 20 — so that introduces a clause stating purpose (Why?) "so that he could do X"
#15 — by verb+ing states a means of doing something (How?) By + Gerund "it did it by verb+ing"
#17, #18 — for verb+ing states the function of a tool or method (What's it for?)
For + Gerund "X is for verb+ing"
