What is or was the hardest part of learning English for you?
I'm creating a number of documents for people who are not native English speakers. I have already made one on verb tenses (http://www.italki.com/docs/7037f697-78a8-40a1-ad13-7b4f0e280162.htm), but I'm not sure what else is difficult for foreign speakers. What were the hardest things for you to learn?I just found this website, since people seem to be having trouble with speaking and pronunciation. The voice isn't very natural, but the pronunciation is (close to) correct.
http://text-to-speech.imtranslator.net/speech.asp?dir=en