What are the benefits or advantages of studying English in an English-only environment?要长一点.

To begin with ,an English-only environment can force you to speak English no matter your English level is high or low , you have to speak English to everyone in this environment , it is a good way for you to practice your oral English and listening .
Waht's more , the aim of studying English is communicate with others in English , especiallly foreigners , as long as the person whom you talked with can speak English fluently , you can gain somethinng at least , you can learn some new words or phrases even some useful sentences .
In sum , so much experience tells us if we want to communicate with foreigners or if we want to study English well , creating an English-only environment or living in it can help us a lot .