Nowadays, an increasing number of people are concerned about which period is more suitable for learning foreign languages. Different from learning at a young age, some people think that adults can learn more effectively. In my opinion, compared with learning foreign languages for adults, teenagers are good at learning foreign languages. First, learning foreign languages needs more time than people think. Young people have numerous time to support their learning and practice. It means that, people can take more time to understand vocabulary and grammar. For instance, teenagers can search information about a word form internet, while, an adult may spend the same time supporting homelife. Second, young people can quickly create a peaceful atmosphere for using a second language. It is obvious that students can chat with each other in different languages. If an adult using different language at work time, it will make working obstacle. However, adults can also also can be bilingual in ot...