I wish=我希望 我希望+聪明（intelligent）=I wish+ I was intelligent 我希望+吃泡菜（eat Kimchi）=I wish+ I could eat Kimch 我希望+住在北京（live in Beijing）=I wish+ I lived in Beijing

-> I wish 我希望 • I wish I was intelligent. 我希望我是聰明的 • I wish I could eat Kimchi.我希望我可以吃泡菜 • I wish I lived in Beijing.我希望我住在北京 -> If I were 如果我是 • If I were rich, I would travel around the world.如果我有錢 , 我會環遊世界 • If I were pretty, I would be a model.如果我"長的"漂亮 , 我會是一個模特兒 I add some words in Chinese to make the sentence better.

我希望 •我希望我是聪明的。 •我希望我可以吃到泡菜。 •我希望住在北京。 - >如果 •如果我有钱，我会周游世界。 •如果我漂亮，我会是一个模特。

"I wish+past tense "and" If I were" are both subjunctive mood,so if u want to emphasize the reality is opposite,you can add"虽然／可是我不..."，a sentence like"but I don't". e.s.I wish I was intelligent --我真希望我是个聪明人，虽然我不是。 If I were rich,I would travel around the world--如果我有了很多钱，我就要去周游世界，可是我没钱。 etc.

Hello,I hope we can do help for each other in language.Looking forward to hearing from you soon.