Learn Hardcore Korean: keompyuteoga neomu neuryeoyo.

The particle 가 marks the grammatical subject, especially when you’re presenting new information. 컴퓨터 ends in a vowel, so you attach 가. If you used 는, you’d be making 컴퓨터 the topic and possibly implying contrast or background context.

What part of speech is 느려요?

In Korean, what looks like an adjective in English is actually a “descriptive verb.” 느리다 (“to be slow”) is one of these. Conjugated politely in the present tense, 느리다 → 느려요, it functions like “is slow.”

Why doesn’t 느리다 become 느리어요?

Because 느리다 is a ㅣ-irregular verb. When the stem ends with ㅣ, you drop that ㅣ and add -여요 instead of -아요/어요, giving 느려요.

What does 너무 do in this sentence?

너무 is an adverb that intensifies the descriptive verb. It can mean “too” (often with a negative nuance) or “very.” Here, “too slow” conveys that the speaker is unhappy with the speed.

Can I say 컴퓨터는 너무 느려요 instead?