〜から means “because.” It is used to give a reason. Place から after the reason clause, then follow with the result. Key points: • Reason + から + Result • Used in both casual and polite speech • Often answers why-questions • Can end the sentence with から in casual speech Example: “日本が好きだから、日本語を勉強します” means “Because I like Japan, I study Japanese.” In polite speech, you can end with です/ます: “忙しいですから、行きません.” Practice by answering why questions: どうして来ませんか？→ 忙しいからです.