chuwoseo janggabi piryohaesseoyo.

It was cold, so I needed gloves.

Breakdown of chuwoseo janggabi piryohaesseoyo.

• ~이: subject particle
• 춥다: cold
• ~어서: so
• 필요하다: necessary / needed

Questions & Answers about chuwoseo janggabi piryohaesseoyo.

What does 추워서 mean, and how is it formed?

추워서 comes from the dictionary form 춥다 meaning to be cold.

It is formed like this:

• 춥다
• stem: 춥-
• add -어서 for because / so
• because 춥다 is a ㅂ-irregular adjective, the ㅂ changes to 우
• so 춥어서 becomes 추워서

So 추워서 means because it was cold or since it was cold.

Why is it 추워서, not 춥어서?

This is because 춥다 follows the ㅂ irregular pattern.

With many adjectives ending in ㅂ, the ㅂ changes to 우 before a vowel-based ending:

• 춥다 → 추워요
• 덥다 → 더워요
• 어렵다 → 어려워요

So when -어서 is added, the correct form is 추워서, not 춥어서.

What does -서 do in this sentence?