I'll tell you about the importance of learning different languages.
First, if you learn different languages, you can use some words when you go abroad. I learned English, so I spoke some English in England. Second, you can understand what they say about. When you see a movie with no captions, you have to understand.
>> you could understand
If it's Your country's language, you may understand. But if it's other country's language, you will? hard to understand.
>> foreign language
>>? It will be hard for you to understand it.
(but you may understand, though.) So , you need to learn some different languages.
It is good to learn some different languages.
>> It is good to learn different languages.