pull + noun vs pull on + noun One of the most confusing facts in english is prepositions for me. Actually I don’t know which preposition I should use ‘to’ / ’for’ in the above sentence. anyhow, I have seen this sentence, "People started pulling on me, too. Somebody pulled on the arm." Isn’t it possible?, "People started pulling me, too. Somebody pulled the arm." Is it grammatically wrong? or What’s the difference between the two sentences? Anybody can teach me prepositions? I really like to learn preposition and adverb kind of up, .. and so on. How do natives learn prepostions? Thanks.