"-은/는/이/가 좋아요" is an adjective(doesn't take any object) while "-을/를 좋아해요" is a transitive verb meaning it always needs the object markers 을/를. e.g. I like Sentosa. = 저는 센토사가 좋아요. = 저는 센토사(에 가는 것)를 좋아해요. \^o^/

좋다　ー to be good (, nice) - adj 좋아하다 - to like - verb, takes object

First of all, very impressive that you can write down Korean characters. the answer below me is apparently correct. But, even if you use "A은/는/이/가 좋아요", "A" is still an object. That's tricky!! Therefore, You'd better remember these things as sets of words(like phrasal verbs!!) you have two choices if you want to say 'I like apple" 1. 나는 사과가 좋아요. 2. 나는 사과를 좋아해요. In both cases, 사과 is always object.