What do non-native speakers find most difficult about learning English?
What do non-native speakers find hardest about English?
What are the English words used in conversations which Indians don't use much? How do native English speakers acquire vocabulary? How can I better understand some native English expressions? How do native English speakers increase vocabulary? How can I understand English native speakers' speaking? What are some good phrases, expressions and tips to use in a conversation to make a non-native speaker appear to be fluent in English? Is it hard for a native English speaker to study grammar? Are native English speakers used to learning other languages? Non-Native English Speakers: What is the funniest native English accent? What is the funniest non-native accent? What do you think of the English oral English? Why does it seem non-native English speakers say "actually" a lot more than native speakers? Why do native speakers say certain thing in a short and concise way, whereas non native speakers use more words or longer sentences? Does English have dialects? What is the easiest foreign language for a native English speaker to learn? How do I find English native speaker? What language is closest in difficulty to English, assuming you don't take related languages into account? How don´t think in the native language when you are speaking English? What is the funniest native English accent? What is the funniest non-native accent? What are the hardest words in English for native Chinese speakers to pronounce? When you are talking with a person who is not native in English, what is the more important standard when it comes to grammar and accent? What makes you think a foreigner  speaks English like a native speaker? Is English a difficult or easy language to learn? What do English speakers do with new words? How can I find native English speakers? What are the best ways to find native English speakers interested in communicating with students to improve their English as a foreign language? What do Americans think of the English? How many Indians speak only English? Is Indian English more formal than other English dialects? What do you think of spoken (oral) English? How is the word "native" used in a sentence?