Hello, everyone! I’m thinking of using a few example sentences from the online Oxford dictionary. Somebody in my locality told me not to use their examples directly without modification. If there is a legal restriction in place, please let me know that. But they (Oxford University Press) have a comprehensive set of examples with very authentic usages of the words.
Waiting for your opinion.
However, I found a few links that can be of some help in the meantime. These are as follows:
https://www.englishgrammar101.com
http://www.advanced-english-grammar.com/
http://www.michigan-proficiency-exams.com/
https://www.englishclub.com/
list of prepositional phrases [Google search]
Can I use their examples or at least as a reference to the URL in my rule?