I require doing research about problems of some Thai people who are not proficient in English. It is one of the big problems in Thailand that Thai people are not proficient in English and it is the interested subject to research. There are various questions and answer on the internet about why Thai people are not proficient in English. Basically, Thai people study English since they were young but it is not all of them are proficient in English. Some people are proficient in English while some people are not proficient in English at all. Some people assume that some Thai people are not proficient in English because they do not comprehend the meaning of vocabulary and too concern about grammar, they are too shy when they have to converse in front of people, they are apprehensive friend will ridicule them, etc. Above mentioned, I require knowing is it real determinant that makes Thai people are not proficient in English