#top useful
1. "For travelling" is correct because "travelling" is a noun in this context (the activity of traveling), and the phrase "for [noun]" is commonly used to indicate purpose or reason, like in "for studying" or "for swimming."
2. "For buying" sounds odd because "buying" is a gerund (a verb acting as a noun), and it's less common to use a gerund after "for" in the context of an infinitive purpose. In your case, it’s more natural to use an infinitive verb ("to buy") after "to" when stating a purpose, as in "I went outside to buy a book."
To summarize:
Use "for" with gerunds when referring to an activity (e.g., "for travelling").
Use "to" with infinitives when indicating a purpose (e.g., "to buy").
Here's why:
1. "For travelling" is correct because "travelling" is a noun in this context (the activity of traveling), and the phrase "for [noun]" is commonly used to indicate purpose or reason, like in "for studying" or "for swimming."
2. "For buying" sounds odd because "buying" is a gerund (a verb acting as a noun), and it's less common to use a gerund after "for" in the context of an infinitive purpose. In your case, it’s more natural to use an infinitive verb ("to buy") after "to" when stating a purpose, as in "I went outside to buy a book."
To summarize:
Use "for" with gerunds when referring to an activity (e.g., "for travelling").
Use "to" with infinitives when indicating a purpose (e.g., "to buy").