The shadowing technique means listening to a speaker and repeating their words a moment later, while the audio keeps moving. You are trying to follow the sounds, pauses, stress and rhythm you actually hear, rather than reading a script at your own pace. It is different from simply watching a video with subtitles: your mouth has to join the listening. It is also different from memorising a speech. You can understand a sentence, listen again and copy it without learning every word by heart.
The short delay matters. When you speak just behind the original, you have to notice how words run together and where the speaker breathes. A written sentence may look simple, but in speech its weak words can shrink and its stressed words stand out. Listening and repeating the same short passage makes those details easier to notice. Shadowing is a practice method, not a pronunciation test: LingoTube does not record your voice or assign a score.
For English shadowing, begin with meaning, then work on sound. Watch the clip once with the translation if the topic is unfamiliar. Pick a sentence whose meaning you can explain in your own words. Listen to it, repeat after it, and only then try speaking along with it. If you cannot follow at the current speed, shorten the passage or use a slower playback setting. There is no benefit in racing through a full talk while losing the sense of every line.
The four-sentence shadowing exercise above is a small place to start. It uses real lines from existing lessons and gives you a listening turn, a speaking pause and a way to repeat. In a full lesson you can move through the bilingual transcript, replay a line and inspect an unfamiliar word. The exercise is most useful when you finish by opening the linked lesson and hearing those sentences in the context of the speaker’s whole idea.