You have decided to learn a language by watching series. Great decision. Now comes the question everyone asks: with which subtitles?
It sounds like a detail, but it is not. With the same show and the same screen time, your choice of subtitles can make you learn a lot or almost nothing. The answer depends on your level, and it changes as you improve.
What happens with each option
Subtitles in your native language
Your eyes read the translation and your brain follows the story through reading. The audio becomes background music. You finish the episode knowing what happened, but the language barely touched you.
There is a well-known study on this. In 2009, researchers Holger Mitterer and James McQueen tested Dutch speakers watching English-language video with unfamiliar accents. Those who watched with English subtitles were better afterwards at recognizing words spoken in that accent. Those who watched with Dutch subtitles, their native language, did not improve: their recognition of the speech actually got worse. The title of their paper sums it up: foreign subtitles help, native-language subtitles harm foreign speech perception.
That does not mean native-language subtitles are forbidden. It means that on their own, they do very little for the language you are learning.
Subtitles in the language you are learning
Now your eyes and ears receive the same thing. You hear the sentence and see how it is written, which teaches your brain to separate the words in the sound. That is what the study showed: seeing the text in the language of the audio helps tune your ear.
The risk is becoming dependent, reading everything and listening to nothing. But for most people, these are the subtitles that teach the most for a long time.
No subtitles
The purest listening practice. It only works well once you already understand most of what you hear. Before that, it turns into frustration: you lose the plot and give up.
Dual subtitles: both at once
One line in the language you are learning and, right underneath, the same line in your language. You hear it, read it and, when you get stuck, glance at the translation without pausing.
For beginners, it is the most balanced option: it keeps the focus on the target language without letting you get lost. Netflix does not offer it natively, and we cover the ways around that in dual subtitles on Netflix.
Which to use at each level
| Level | Recommended subtitles | Why |
|---|---|---|
| Beginner | Dual (target and native) | Links sound to written word and meaning, without getting lost. |
| Upper beginner | Target, with native only when stuck | The focus shifts to the target language; the translation becomes a backup. |
| Intermediate | Target only | Trains your ear to recognize spoken words. |
| Advanced | None (target when needed) | Pure listening, the way native speakers watch. |
The switch does not have to happen all at once. A good rule: when you are reading the support subtitle on fewer than half the lines, it is time to drop it.
A trick to speed up the transition
Watch the same clip twice with different subtitles.
- First with the subtitles you need today (dual or target only), to understand it.
- Then with one less (target only, or none), to train your ear on what you already understood.
Since you already know what is being said, the second pass is much easier, and it is the one that trains your ear. More on this kind of repetition in how to improve your English listening.
The two most common mistakes
Staying on native-language subtitles forever. It is comfortable, you follow the show and it feels like studying. A year later, your listening is almost the same.
Dropping subtitles too early. Watching without subtitles before you are ready speeds nothing up. You understand little, get tired and end up switching back to the dubbed version.
The sweet spot is where you understand most of it but have to make an effort. Too easy teaches nothing, too hard is demoralizing.
And the audio?
One rule applies at every level: audio always in the language you are learning. Watching dubbed with target-language subtitles helps your reading a bit, but it does not train your ear, which is exactly where most learners get stuck.
How to do this in practice
On YouTube, you pick the subtitle language in the video settings. On Netflix too, but only one subtitle track at a time.
Telidioma adds what is missing on both: dual subtitles (target language on top, translation below) and clickable words. You can turn both lines on at the start and, as you improve, switch to the target language only in the settings. When a word stops you, tap it and see what it means in that sentence, without pausing and without going back to the translation.
For the full method, from the first episode to watching without subtitles, read how to actually learn a language with Netflix.