to ..., for ..., and so that

Using to + verb to Express Purpose

When you want to explain why someone does something, use to + infinitive.

• I called the restaurant to reserve a table for the client dinner.
• She checked the manual to find the correct procedure.
• He sent a follow-up email to confirm the delivery date.
• The team scheduled an extra meeting to discuss the budget changes.

The to + verb structure answers the question “why?” — it gives the purpose behind an action.

Something / a place / time / money + to …

You can use to + verb after words like something, a place, nowhere, work, money, time, chance, opportunity, and energy.

• We need a place to hold the quarterly review. (= a place where we can hold it)
• Would you like something to drink before we start? (= something that you can drink)
• I have a lot of work to finish before Friday.
• Do you get much opportunity to practise your presentation skills?
• She didn’t have the energy to stay for the evening session.

When there is a preposition after the verb, keep it at the end:

• There’s no chair to sit on in the waiting area.
• I need a pen to write with.
• He had nobody to talk to during the conference break.

Comparing for and to

Use for + noun and to + verb to express purpose, but don’t mix them up:

You can also say for someone to do something:

• There weren’t enough desks for us to work at, so some people shared.
• I left the key at reception for you to pick up.

for + -ing (What Something Is Used For)

Use for + -ing to describe the general purpose or function of an object.

• This software is for managing customer data.
• The small meeting room is for making private phone calls.

But when you explain why a person does something, use to + verb, not for + -ing:

• I opened the spreadsheet to check the numbers. (not for checking)
• He went to the supply room to get more paper. (not for getting)

You can use What … for? to ask about purpose:

• *What is this button for?* (= what is it used for?)
• *What did you call the meeting for?* (= why did you call it?)

Using so that

When the purpose clause needs its own subject, or when you use can/could or will/would, use so that instead of to.

Common patterns with so that:

• He’s taking an online course so that he can get certified before the deadline.
• We booked the large room so that everyone could attend in person.
• I set an alarm so that I wouldn’t forget the 8 a.m. call.
• Please send the agenda in advance so that we can prepare.

You can drop that in informal speech and writing:

• I set an alarm so I wouldn’t forget. (same meaning)

Quick Self-Check