To express PURPOSE: "for" is followed by a noun or gerund; "to" is followed by an infinitive. Both translate as "para/para que" in Spanish, but have different grammar rules.
FOR + NOUN or GERUND to express purpose or function. (1) FOR + NOUN: "This room is for meetings." "I went to the store for milk." (2) FOR + GERUND (-ing) when talking about the GENERAL FUNCTION or USE of something (typically an object): "This tool is for cutting wood." "The form is for registering new clients." FOR + GERUND is not typically used with human subjects to describe the purpose of a specific action.
This conference room is for client presentations and board meetings — please book it in advance through the scheduling system.
The survey is for collecting employee feedback on the new hybrid work policy introduced last quarter.
She went to the pharmacy for the medication the doctor prescribed during her appointment on Monday.
TO + INFINITIVE to express the purpose of a specific HUMAN ACTION. "I went to the store to buy milk" = the purpose of my going. "She studied hard to pass the exam" = the purpose of her studying. "He called to confirm the appointment." This is the most common structure for expressing purpose in English: the subject does one action FOR THE PURPOSE OF doing another.
She attended the industry conference to network with potential clients and stay updated on the latest market trends.
He reviewed the contract a second time to make sure he had not missed any important clauses before signing.
They launched the new feature early to gather user feedback before investing more heavily in the full rollout.
Common mistake
Classic Spanish speaker error: "I went to the store for buy milk" = INCORRECT. The preposition "for" in English cannot be directly followed by an infinitive for human action purpose. To describe the PURPOSE of going somewhere (or doing something), use TO + INFINITIVE: "I went to the store TO BUY milk." "For buying milk" would only be correct when talking about the GENERAL FUNCTION of an activity ("I use this app for buying tickets" = talking about the app's use). For the purpose of a specific personal action, always: TO + INFINITIVE.
Trick to remember it
The ACTION vs FUNCTION rule: (1) Describing something YOU do and WHY? Purpose of your ACTION = TO + INFINITIVE. "I called [my action] TO CONFIRM [purpose]." (2) Describing the GENERAL FUNCTION of an OBJECT or PLACE? = FOR + NOUN or GERUND. "This button is FOR CONFIRMING [object function]." A test: can you insert "in order to" (formal English)? If YES = TO INFINITIVE. "I called IN ORDER TO confirm" = correct. "This button is in order to confirm" = sounds wrong = use FOR.
Quick rule
Purpose of a specific human action: TO + INFINITIVE ("I came to help"). General function of an object or place: FOR + NOUN or GERUND ("this is for helping new users"). "For + infinitive" DOES NOT EXIST in English to express purpose.
Did you know?
The "for + infinitive" confusion for purpose expression is one of the most predictable errors of Spanish speakers because in Spanish "para" is used indistinctly with infinitive: "fui a la tienda PARA COMPRAR leche." English historically also used "for + infinitive" for purpose (visible in Medieval English texts: "he went for to see the king"), but this construction disappeared from standard English in the 18th century. Today, "for to + infinitive" sounds dialectal or very archaic. The only modern exception of "for" before a verbal form is "for + gerund" (object function), which became firmly established in English from the 17th century onward.
Exercise 1 · Pick the right one
She took an intensive course _____ improve her data analysis skills before applying for the senior position.
Exercise 2 · Pick the right one
This form is _____ submitting expense reports — attach all receipts before handing it to your manager.
Exercise 3 · Form the word
Purpose of a specific human action: TO + INFINITIVE ("I came to help"). General function of an object or place: FOR + NOUN or GERUND ("this is for helping new users"). "For + infinitive" DOES NOT EXIST in English to express purpose.
Classic Spanish speaker error: "I went to the store for buy milk" = INCORRECT. The preposition "for" in English cannot be directly followed by an infinitive for human action purpose. To describe the PURPOSE of going somewhere (or doing something), use TO + INFINITIVE: "I went to the store TO BUY milk." "For buying milk" would only be correct when talking about the GENERAL FUNCTION of an activity ("I use this app for buying tickets" = talking about the app's use). For the purpose of a specific personal action, always: TO + INFINITIVE.
The ACTION vs FUNCTION rule: (1) Describing something YOU do and WHY? Purpose of your ACTION = TO + INFINITIVE. "I called [my action] TO CONFIRM [purpose]." (2) Describing the GENERAL FUNCTION of an OBJECT or PLACE? = FOR + NOUN or GERUND. "This button is FOR CONFIRMING [object function]." A test: can you insert "in order to" (formal English)? If YES = TO INFINITIVE. "I called IN ORDER TO confirm" = correct. "This button is in order to confirm" = sounds wrong = use FOR.
Bryan López
Founder of SpeakUP Academy