Simple question
What's the difference between someone say
"I started working on something..."
And
"I started to work on something..."
Simple question
What's the difference between someone say
"I started working on something..."
And
"I started to work on something..."
I would say that the main difference is the structure of the verb. The first sentence utilizes a present participle while the second sentence uses an infinitive. (To+verb=infinitive.)
PS: For those that might argrue that "working" in this context is a gerund, I would suggest to look at 5.113 in the 17th edition of the CMS. There it says as follows: "A particple...can be modified only by an adverb. A gerund...can be modified only by an adjective." You'll see that "working" in this context can only be modified by an adverb. (E.g. I started working [tirelessly, frequently, etc.])