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good; excellent; fine; nice; pleasant; agreeable
sufficient; enough; ready; prepared
profitable (deal, business offer, etc.); beneficial
OK; all right; fine; no problem
easy to ...
天気が良いので外で散歩することにしよう。
Since the weather is nice, let's take a walk outside.
成績が良ければ奨学金をもらえるかもしれないよ。
If your grades are good, you might get a scholarship.
良ければ一緒に昼ご飯を食べませんか。
If you'd like, shall we have lunch together?