There are four fundamental parts to a language – reading, writing, listening, and speaking. Reading and listening are input – you read for comprehension, you write for comprehension. Writing and speaking are output – you are putting out information to other people for them to read or heard and understand.
Just like input, output is key to learning the language – although this is relatively difficult because it’s hard to know where to start. Even the most basic sentences can become confusing. But as they say – “practice makes perfect,” and this is definitely true when it comes to output.
Even though babies go through a lot of input, they don’t learn the language in just this way. There are people all around them teaching them words and phrases, and they spend their entire life learning their dialect. Most importantly they attempt to speak as they get older, and even though it’s not perfect, they learn. Learning a language as an adult is a tad bit different.