1) whistling"Beat it," I lifted the weight
I lifted the weight,whistling"Beat it
2) By concentrating, I lifted the weight
I lifted the weight by concentrating
3) To free my leg, I lifted the weight
I lifted the weight to free my leg
In each case, the subject I makes sense: I WAS WHISTLING "BEAT IT," I WAS CONCENTRATING, I WANTED TO FREE MY LEG. Make sure these modifiers have sensible subject in the sentence.
I dont understand this concept fully. Can somebody explain in detail?. Is there any book or website cover this topic in detail?
Tom, I am not quite sure but I think the what "Make sure these modifiers have sensible subject in the sentence." is trying to say is subject should make sense in meaning
1. I lifted the weight by
"Whistling" lifted the weight
2. I concentrating
lifted the weight
Subject is "concentrating"
I am not an expert on this but this is what I understood. I hope that helps.