This decides everything — get this right first
Before you can form a comparative or superlative, you must decide whether the adjective is short (use -er / -est) or long (use more / the most). The rule is based on syllables — the number of beats when you say the word aloud.
| Type | Rule | Comparative | Superlative | Examples |
|---|---|---|---|---|
| 1 syllable SHORT |
Add -er / -est | cheap → cheaper | cheap → the cheapest | old, fast, tall, sick, weak, strong, long, short, young, new |
| 1 syllable ending in CVC SHORT — spelling change! |
Double the final consonant + -er / -est | big → bigger | big → the biggest | hot → hotter, thin → thinner, fat → fatter, wet → wetter |
| 2 syllables ending in -Y SHORT — spelling change! |
Change y → i + -er / -est | healthy → healthier | healthy → the healthiest | happy, easy, busy, dizzy, heavy, ugly, lucky, lazy |
| 2+ syllables (not -y) LONG |
Use more / the most | effective → more effective | effective → the most effective | expensive, dangerous, important, painful, useful, recent |
Always use than · short adjectives add -er · long ones use more
Use a comparative when you are comparing two things, people, or groups. The form depends on the length of the adjective. Always follow with than.
| Adjective type | Rule | Example | Spelling note |
|---|---|---|---|
| 1 syllable | add -er | cheap → cheaper than | fast → faster, old → older |
| 1 syllable ending CVC | double consonant + -er | big → bigger than | hot → hotter, thin → thinner |
| 2+ syllables | more + adjective | expensive → more expensive than | dangerous → more dangerous |
| ends in -y | change y→i + -er | healthy → healthier than | easy → easier, happy → happier |
Always use the · for 3 or more things · short add -est · long use the most
Use a superlative when you identify the extreme example (best, worst, cheapest) from a group of three or more. Always use the before it.
These adjectives completely change their form
These four adjectives do not follow any rule — you must memorise all three forms for each one.
| Base form | Comparative (2 things) | Superlative (3+ things) | Example |
|---|---|---|---|
| Good | Better than | The best | "This medicine is better than the last one." |
| Bad | Worse than | The worst | "Monday was the worst day of my life." |
| Far | Farther / Further than | The farthest / furthest | "The specialist is further away than the GP." |
| Little (amount) | Less than | The least | "This pill has the least side effects." |
Expressing degree and quantity — position matters
These four words all express how much of something there is, but they have very different positions in a sentence and different meanings. Getting the position right is as important as choosing the right word.
| Word | Meaning | Position | Example |
|---|---|---|---|
| TOO | More than needed — a problem | BEFORE adjective | "The coffee is too hot to drink." |
| ENOUGH | Sufficient — just right | AFTER adjective | "Are you well enough to travel?" |
| LESS | A smaller amount (comparative) | BEFORE adjective | "This pill is less expensive than that one." |
| LEAST | The smallest amount (superlative) | BEFORE adjective | "This is the least dangerous option." |
When two things are equal — or not equal
Use as … as to say that two things are the same (or equal). Use not as … as to say they are different (one is less).
Last week was the worst week of my life. I felt worse on Monday than on Sunday. My throat was too sore to eat anything solid. I went to the GP, but the queue was too long to wait. I decided to go to A&E because the wait there is usually shorter than at the local surgery.
1. How does he describe last week?
2. Why couldn't he eat solid food?
3. Why did he go to A&E instead of waiting at the GP?
4. On which day did he feel worse?
The doctor said I was not well enough to go to work. She gave me two prescriptions. The first was the most expensive medicine in the pharmacy. The second was less expensive, but also less effective. I bought the expensive one because health is more important than money.
1. Was he well enough to work?
2. How many prescriptions did he receive?
3. Which medicine did he choose and why?
4. How does the text describe the second medicine?
By Wednesday I felt better than on Monday, but I was still not well enough to leave the house. The medicine was working — my fever was lower than before. However, the side effects were worse than I expected. I was more tired than usual and slightly dizzy. The doctor said this was normal.
1. How did he feel on Wednesday compared to Monday?
2. What evidence shows the medicine was working?
3. What were the side effects?
4. Was he well enough to leave the house on Wednesday?
I went back to see the doctor on Friday. She said I was the most improved patient she had seen all week. My throat was less swollen than before. The pain was not as intense as it had been on Monday. She told me to take a smaller dose from now on — half as much as before.
1. How did the doctor describe him?
2. How was his throat on Friday?
3. How does the text describe the pain on Friday?
4. What did the doctor change about the medicine?
By Sunday I felt as good as new. The NHS is not as fast as a private clinic, but it is the most important service in the country. My experience this week taught me that prevention is better than cure — eating healthily and exercising is more effective than any painkiller.
1. How did he feel by Sunday?
2. How does he describe the NHS compared to a private clinic?
3. What lesson did he learn?
4. What does he say is more effective than any painkiller?
Last winter, Sarah had (1) cold she had ever experienced. She felt (2) every day. Her temperature was (3) to go to work.
She went to her GP, who said the clinic was not (4) usual. The doctor prescribed two medicines. The first one was (5) than the second, but also (6).
Sarah chose the (7) expensive option because she was not (8) to afford the other one. After three days, she felt (9) than when she had started. By the end of the week, she felt (10) new. The doctor said she was (11) to return to work on Monday.