雅思是什么语言？
I am an English as a Second Language (ESL) teacher with over 15 years experience. My degree is in TESOL (Teaching of English to Speakers of Other Languages)， and I have taught ESL to adults， teens and children in various settings including private classes， corporate training and at universities. In addition， I hold a Master's Degree in Curriculum and Instruction from Fordham University along with being certified to teach reading literacy in both ESL and content areas.
Let me first answer what it means to be “fluent” in a language other than your mother tongue. To me， the term "fluent" implies that you can carry on a conversation in the target language. You will be able to ask for directions， order food in a restaurant， and describe where you are from and how long you’ve been living abroad. Fluency also entails having good enough grammar and vocabulary knowledge so that when you make mistakes， they don't tend to be very obvious or embarrassing.
When you take a closer look at the concept of fluency， you will notice there are some limitations to what it refers to： https：//www.youtube.com/watch？v=2_o8rN9VZmQ ［For those who need the links provided in the video above：http：//www.thefreedictionary.com/fluent http：//www.cambridge.org/examples/linguistics/fluent_native.htm］
In my opinion， the idea of fluent is relatively subjective because we all know what native speakers sound like， but what constitutes a non-native speaker sounding “fluent” is much more ambiguous. The point here is not to argue about what makes someone sound “fluent”（for example， 300 words vs. 600 words per day）； rather， the focus should be on making sure you are using the right tools to help you develop the four components of fluency： pronunciation， grammar， vocabulary and confidence.
With regards to IELTS， this is indeed a fairly good indicator of whether one can communicate effectively in an English speaking environment. It measures your ability to understand academic ideas， read critically and write a varied array of texts（from descriptions to arguments to explanations）.
In theory， if you score highly on the IELTS， you would be expected to do well in an English language university