Question

저는 영어를 못해요 As a topicalizing particle, -은/는 cannot follow words bringing up a new topic. In first-person subject sentences, it is obvious that the speaker is talking about himself, so the subject is often marked with -은/는. Similarly, when talking about universally acknowledged facts, the subject is commonly followed by -은/는.

Accepted Answer

I can't speak English

Front	저는 영어를 못해요
Back	I can't speak English
Notes	As a topicalizing particle, -은/는 cannot follow words bringing up a new topic. In first-person subject sentences, it is obvious that the speaker is talking about himself, so the subject is often marked with -은/는. Similarly, when talking about universally acknowledged facts, the subject is commonly followed by -은/는.

Subject Talking 은/는 저는 영어를 못해요 I Speak