Question 1

When do you use -er/-est vs more/most for comparatives?

Accepted Answer

Short adjectives (one syllable) typically add -er/-est (tall/taller/tallest). Longer adjectives (two or more syllables) use more/most (beautiful/more beautiful/most beautiful). Two-syllable adjectives ending in -y change to -ier/-iest (happy/happier/happiest).

Question 2

What are the irregular comparative and superlative forms?

Accepted Answer

The most common irregular comparisons are: good/better/best, bad/worse/worst, far/farther(further)/farthest(furthest), little/less/least, much(many)/more/most, and old/elder(older)/eldest(oldest).

Question 3

What is the difference between comparative and superlative?

Accepted Answer

Comparative forms compare two things (e.g. 'taller than'), while superlative forms indicate the highest degree among three or more things (e.g. 'the tallest'). Comparatives use -er or more, superlatives use -est or most.

Mẫu	Quy Tắc	Ví Dụ
+ er/est	Tính từ ngắn (1 âm tiết): thêm -er / -est	tall→taller→tallest fast→faster→fastest old→older→oldest
double + er/est	Kết thúc CVC: gấp đôi phụ âm cuối + -er / -est	big→bigger→biggest hot→hotter→hottest thin→thinner→thinnest
y → ier/iest	Tính từ kết thúc bằng -y: đổi y thành -ier / -iest	happy→happier→happiest easy→easier→easiest early→earlier→earliest
more / most	Tính từ dài (từ 2 âm tiết trở lên): dùng more / most	beautiful→more beautiful→most beautiful important→more important→most important carefully→more carefully→most carefully

So sánh quy tắc

FAQ

When do you use -er/-est vs more/most for comparatives?

What are the irregular comparative and superlative forms?

What is the difference between comparative and superlative?

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