Eli5 – How would you explain when to use “I’ll” vs “I will” to someone who isn’t a native speaker?

Question

For example why does it sound unnatural to say “I’ll not use this for profit.”?

In: 0

Answer 1

Not quite what you asked, but on a related subject: contractions involving the subject+verb are only used when it’s a helping verb, not the main verb. For example “I’ve gone there” is ok but not “I’ve a piano”.