Immersion in language learning is proven to be one of the most effective methods, and, therefore, (is) one of the most widely used. Immersion in language learning is proven to be one of the most effective methods and, therefore, (is) one of the most widely used.

Without the second “is,” you’re saying it’s PROVEN to be one of the most widely used. If this is what you mean, then it’s fine.

Immersion in language learning ishas been proven to be one of the most effective methods, and therefore, one of the most widely used, methods. Immersion in language learning has been proven to be one of the most effective, and therefore widely used, methods.

Immersion in language learning ihas proven to be one of the most effective methods, and t. Therefore, is is one of the most widely used. Immersion in language learning has proven to be one of the most effective methods. Therefore, is is one of the most widely used.

But what isn’t so often talked about is that inmmersion has a drawback, or at the very least, a cost. But what isn’t so often talked about is that immersion has a drawback, or at the very least, a cost.

Typo: "immersion" is the correct spelling.

ButYet, what isn’t so often talked about is thatare the pitfalls of inmmersion has a drawback, or at the very least, a, including the cost. Yet, what isn’t often talked about are the pitfalls of immersion, including the cost.

Those of us who willingly learn a language, subject ourselves to an incessant bombardment of input;: we read books and transcripts, listen to music and podcasts, watch videos and movies for hours on end so that(,) drop by drop,(,) our target language will seep into our brain, since that’s what we’re supposed to do to take it to the next level. Those of us who willingly learn a language, subject ourselves to an incessant bombardment of input: we read books and transcripts, listen to music and podcasts, watch videos and movies for hours on end so that(,) drop by drop(,) our target language will seep into our brain, since that’s what we’re supposed to do to take it to the next level.

I would use a colon here instead of a semicolon. To me, the comma after “drop by drop” is optional, but if you include it then you also need a comma before.

Those of us who willingly learn a language, subject ourselves to anthe incessant bombardment of input; ws. We read books and transcripts, listen to music and podcasts, watchand videos and movies for hours on end so that drop by drop, our target language will seep into our brain, since that’s what we’re supposed to do to take it to and allow us to reach the next level. Those of us who willingly learn a language subject ourselves to the incessant bombardment of inputs. We read books and transcripts, listen to music and podcasts, and videos and movies for hours on end so that our target language will seep into our brain and allow us to reach the next level.

The PriceCost of Immersion The Cost of Immersion

sounds more native :)

If you don’t give itprecision with the language too much importance, then sure that would be fine! If you don’t give precision with the language too much importance, then sure that would be fine!

Those of us who are into language learning are constantly told not to be fussy, that the important thing is to communicate, and that it doesn’t matter if your message sounds like a jumble of words, as long as the other person understands what you’re saying. Those of us who are into language learning are constantly told not to be fussy, that the important thing is to communicate, and that it doesn’t matter if your message sounds like a jumble of words as long as the other person understands what you’re saying.

Those of us who are intopassionate about language learning are constantly told not to be too fussy, that the most important thingobjective is to communicate, an well. We are told that it doesn’t matter if your message sounds like a jumble of words, as long as the other person understands what you’re saying. Those of us who are passionate about language learning are constantly told not to be too fussy, that the most important objective is to communicate well. We are told that it doesn’t matter if your message sounds like a jumble of words, as long as the other person understands what you’re saying.

That’s basically what communication is all about, but the basics aren't usually what we all have in mind when we learn a language. That’s basically what communication is all about, but the basics aren't usually what we all have in mind when we learn a language.

Spelling error: "communication" is the correct spelling.

That’s basically what communication is all about, but the basics aren't usually what we all have in mind when we are learning a language. That’s basically what communication is all about, but the basics aren't usually what we all have in mind when we are learning a language.

That's just the starting point, and i. It's largely up to us to become proficient at it. That's just the starting point. It's largely up to us to become proficient at it.

That's why we jump into consuming all the different kinds of contents that are at our disposal in order to create that bubble called “immersion”. That's why we jump into consuming all the different kinds of content that are at our disposal in order to create that bubble called “immersion”.

"Content" is uncountable when referring to media or materials for learning.

That's why we jump into consuming all the different kinds of contents that are/is at our disposal in order to create that bubble called “immersion”. That's why we jump into consuming all the different kinds of content that are/is at our disposal in order to create that bubble called “immersion”.

If you use “are,” then the subject of “are” is “kinds (of content); if “is,”, then the subject of “is” is “content.” I think both are OK, although I personally prefer the latter.

That's why we jump into consuming all the different kinds of contents that are at our disposal in order to create that bubble called “immersion”. That's why we jump into consuming all the different kinds of content at our disposal in order to create that bubble called “immersion”.

That's why we jump into consuming all the different kinds of contentsmedia that areis at our disposal in order to create that bubble calledfacilitate “immersion”. That's why we jump into consuming all the different kinds of media that is at our disposal in order to facilitate “immersion”.

What I want to explore is what happens to our mother tongue when we learn a foreighn language. What I want to explore is what happens to our mother tongue when we learn a foreign language.

Typo: "foreign" is the correct spelling.

What I want to explore is what happens to our mother tongue when we learn a foreighn language. What I want to explore is what happens to our mother tongue when we learn a foreign language.

What I want to explore is what happens to our mother tongue when we learn a foreighn language. What I want to explore is what happens to our mother tongue when we learn a foreign language.

What I wantHowever, what I would like to explore is what happens to our mother tongue when we learn a foreighn language. However, what I would like to explore is what happens to our mother tongue when we learn a foreign language.

I personally would like to be able to say that my Spanish is intact, and that I still express myself with the same clarity and correctness I used to, and that I don’t stammer when I speak in public, but uthat I used to. Unfortunately, that’s not the case. I personally would like to be able to say that my Spanish is intact and that I still express myself with the same clarity and correctness that I used to. Unfortunately, that’s not the case.

In a society where, like it or not, everything is tagged and categorized, the way we speak, speaks for us. In a society where, like it or not, everything is tagged and categorized, the way we speak, speaks for us.

I feel like a comma here would be good, but I'm the first to say that I never actually remember the rules. I just separate by comma by make the sentences easier to read.

In a society where, like it or not, everything is tagged and categorized, the way we speak speaks fordefines us. In a society where, like it or not, everything is tagged and categorized, the way we speak defines us.

Simply put, no matter how they spin it, in a gift, the wrapping matters, and very much sothe wrapping of a gift matters just as much as what is inside. Simply put, the wrapping of a gift matters just as much as what is inside.

this metaphor is confusing

Learning English has not left my Spanish untouched, so I constantly find myself trying to recall words that simply don't exist in Spanish,(,) but they do in English. Learning English has not left my Spanish untouched, so I constantly find myself trying to recall words that simply don't exist in Spanish(,) but do in English.

Learning English has not left my Spanish untouched, so I constantly find myself trying to recall English words that simply don't exist in Spanish, but they do in English. Learning English has not left my Spanish untouched, so I constantly find myself trying to recall English words that simply don't exist in Spanish.

Learning English has not leftaffected my Spanish untouched, sosuch that I constantly find myself trying to recall words that simply don't exist in Spanish, but rathey do inr are from English. Learning English has affected my Spanish such that I constantly find myself trying to recall words that simply don't exist in Spanish, but rather are from English.