ばと思う / ば(いい)と思う
文法の解説は英語です。
用法
Used to express the speaker's wishes or desires. [-ばいいのに] is used to indicate regret that the actual situation is different from what one would have liked
例文
誰かいい人と出あればと思って、パーティーに行った
I went to the party hoping to meet someone nice
あんな素敵な人が恋人ならなあ
If only such a wonderful person would be my lover
このかばん、欲しいけど高いなあ。もっと安ければいいのに
I'd love to have this bag, but it's expensive. If only it were cheaper