The sentence studying is when i fall asleep is an example of misplaced modifier parallel structure dangling modifier incorrect use of adverbial phrase

The sentence 'Studying is when I fall asleep' is an example of dangling modifier. When you read the sentence, you can tell that it does sound awkward. This is because the clause is not clearly related to the word it modifies. Who is studying? How is the action of studying related to the action of falling asleep? Unfortunately, you cannot correct dangling modifiers by simply moving it to a different place in the sentence. You will have to restate the sentence again by saying 'When I study, I fall asleep.' In that way, the doer of the action is clear and the clause gains meaning.  

invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.