Ask anyone learning English what the hardest part is and a great many will say the same thing: people speak too fast. They can read the page. They know the words. Said out loud, it goes past them.
The speed is mostly not the problem, and this lesson is about what is.
Two words in five come from one short list
English has a group of very common words that change shape when they are not being stressed — squashed, as this course will call it, or said in a weak form. To becomes a short flat sound. And loses most of itself. Of, was, have, for, can all do the same.
There are fewer than fifty of them, and that is the whole list. Everything else in English keeps its shape, including some small words you might expect on it: it, in, on, by, with, my, did, they and who are short and common, but they have no squashed form, so they are not on the list and the lab does not count them.
Now count how often they turn up. The page in the lab is 936 words of a novel, and 387 of those words are on the list. That is 41.3%, and only 43 different words account for all of it.
What that means for listening
Two words in every five reaching your ear come from that list, and most of them arrive in a shape you may never have been shown. The words carrying the meaning are still said clearly. What is between them has been flattened.
A learner who knows every word on a page can still fail to hear that page when it is read out, and nothing is wrong with their ears or the words they know. They were taught the written shape of these few words and not the spoken one.
What the count does and does not say
The 387 is the most it could be: every word on the list, every time it appears. A word on the list keeps its full shape when it is stressed, and most of them keep it when they are left standing at the end of a sentence: who are you looking at? says at in full, and yes, I can says can in full. The words for people are the exception: I saw him ends on the squashed him, and her and you behave the same way. The lab counts the end position on the page: 24 of the 387 listed words stand last before a comma, a full stop, a question mark or another mark. Half of those 24 are him, her, he or you, which you can check on the printed passage, so the number likely said in full is smaller still. The table in the lab prints every word it counted with its squashed shape and its count, so you can check any of them against the page.
Four more — that, have, has, had — squash only when they are doing grammar work. That pointing at something (that book) and have meaning to own or to eat (have tea) keep their full shape. The lab counts those four separately: 42 of the 387. There is the same kind of word, squashed in there was a time and said in full when it points at a place, and the lab does not count it apart. So the figure to carry in your head is a little under two in five, and the list to carry is the printed one.
Why they blur together
Most of the squashed forms use the same vowel, a short flat sound made in the middle of the mouth. So they are not only shorter, they also sound like each other.
That is why a run of small words can arrive as a single noise. There are four or five words in it, they are all from the same short list, and nearly all of them are wearing the same vowel.
Hearing it, not only reading it
Press Listen at the top of the page and your browser will read it to you. That voice is a reading voice rather than a person talking, so it squashes less than a speaker would; what you hear is the slow version of the thing this lesson is about.
What this lesson adds is knowing what to listen for, and where. The lab marks every word on a real page that can take a weak form and prints what each one becomes. Take that list to anything you are already listening to, and the gaps stop being gaps. The other words, the ones that carry the meaning, have a part that is said hardest. Where it falls, and what moves it, is the subject of Word Stress, and the next lesson here counts how often it comes first.