Thanks so much you too! Saane-san, your explanation was really helpful. I need to keep that in mind when I do some more exercises. Thank you again!

Learn by examples. These two sentences both mean "this is good". 1. これはいい。 The focus is on the predicate, いい. It is an answer to the question "How is this?" 2. これがいい。 The focus is on the subject, これ. It is an answer to the question "Which is good?" So it's used when something is particularly good above all else. "I like curry." 1.カレーはすきです。It is a matter of how you find curry in general. Do you like it? Do you hate it? It is an answer to the question "Do you like curry?" or "How do you find curry?" Just like when you say in English "I LIKE curry" with much stress on LIKE. 2.カレーがすきです。 It is about what you like. The focus is on the subject. What you like is curry. It is an answer to the question, "What do you like?". The first one applies to... "Don't get me wrong. I LIKE curry. But I can't eat so much spicy food." The second one applies to... "I like CURRY. I like it because it's easy to cook and is delicious."

hi Im a Chinese but Im studying Japanese,too.when は's meaning comes to "is" or "are"，its pronunciation will be わ.