Imagine:
Scene 1: Colourless world
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The sky is there, but it is only grey. The streets exist, but they feel empty. People speak, but their words sound flat and emotionless. There is no exciting news, no beautiful music, no powerful ideas. Everything is simply… there.
Scene 2: Superheroes exist
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Now imagine a figure stepping into this colourless world. Not a warrior. Not a king. A creator. Like Leonardo da Vinci, they bring colour, shape, and detail to what we see. Like Mozart, they add rhythm, mood, and emotion to what we hear. This figure is an adjective.
Scene 3: Magical Action
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Finally, in a matter of seconds, the world feels live again.  Adjectives do not change what exists. They change how we experience it. They give language a soul.

Revise: but you already know this superhero, don’t you! You met them in form 7: Adjectives
 
Learn: now it is time to dig in deeper.  Watch the video:
 
Key Takeways:
1. Adjectives can be formed from verbs. Some adjectives come from verbs by adding endings called suffixes: -ing, -ed.
Example:
frustrate — frustrating / frustrated
These endings change a verb into an adjective.
2. -ing adjectives describe the cause. Use -ing adjectives to describe: a thing, a person, a situation. They tell us what causes the feeling.
Examples:
a boring lesson
an exciting film
a confusing explanation
3. -ed adjectives describe the feeling. Use -ed adjectives to describe how a person feels. They talk about emotions, which are usually temporary.
Examples:
I am bored.
She feels excited.
They were confused.
4. The meaning changes if you choose the wrong form. This is very important:
Examples:
He is bored. — This is how he feels.
He is boring. — He makes other people feel bored.
Using the wrong adjective can change the meaning of the sentence completely. Be careful, you can offend someone and get in a lot of trouble if you do not pay attention. 
5. You can remember it like this: 
-ing — What causes the feeling?
-ed — How do I feel?
If you can ask “How do I feel?”, use -ed.
If you can ask “What causes this feeling?”, use -ing.
Learn: in the next video, you’ll meet two powerful word endings: -ful and -less. Watch closely. These endings quietly shape meaning everywhere.
 
Key Takeways :
1. -ful means “full of”. When you add -ful, the adjective means that something has a lot of that quality.
Examples:
helpful — full of help
careful — full of care
colorful — full of colour
painful — full of pain
2. -less means “without”. When you add -less, the adjective means that something does not have that quality.
Examples:
fearless — without fear
spotless — without dirt, very clean
restless — without rest
hopeless — without hope
3. -ful and -less often form opposites
Examples:
helpful — helpless
hopeful — hopeless
careful — careless
4. These suffixes help you guess new words. If you know that "-ful" means "full of"; "-less" means "without" you can often understand a word even if you have never seen it before.
Learn: watch the video to learn how -able and -ible turn actions into adjectives and help you judge what is possible.
 
Key Takeways:
1. Both -able and -ible are endings (suffixes) used to form adjectives. They usually mean: “can be done”, “fit for”, “having the quality of”.
Examples:
edible — can be eaten
adaptable — able to adapt
2. Very often, -able / -ible adjectives are formed from verbs.
Examples:
depend — dependable
adapt — adaptable
digest — digestible
They help us evaluate things, actions, or situations.
3. There is a general rule that helps with spelling:
If the base word is a complete word, we usually use -able.
Examples:
depend — dependable
adapt — adaptable
If the base word is not a complete word, we usually use -ible.
Examples:
visible is a real adjective, but "vis" is not a word you can use in English. So there is no clear base word.
4. This rule does not work 100% of the time. Some words break the rule: accessible, convertible, digestible. If you are not sure: -able is more common than -ible, it is often the safer choice, check if the word is right in a dictionary. English spelling is sometimes about recognising the correct form, not just rules.
 
Atsauce:
mmmEnglish "Common Mistakes with English ADJECTIVES  -ed and -ing endings" on youtube.com
Mrs. Montgomery's Learning Corner "Suffixes (-ful and -less)" on youtube.com
EasyTeaching "Suffixes 'ible' vs 'able'" on youtube.com