問題: Have you ever sent a thank you card to others?

Yes, I have sent thank you cards before. I remember sending one to my teacher after graduation to thank them for their help. I also send them to family and friends during holidays.

Yes, I have sent thank you cards on several occasions. For instance, I sent one to my teacher after graduation to express my gratitude for their guidance. Additionally, sending thank you cards is a tradition in my family, and I enjoy keeping it alive by sending them to friends and family during holidays or after receiving gifts.

1.現在完成式：「I have sent thank you cards on several occasions.」這裡使用現在完成式表示寄送感謝卡的動作在過去某些不特定的時間發生過，且可能持續到未來。 2.不定詞的使用：「to express my gratitude」和「to my teacher after graduation」使用不定詞片語來說明寄送感謝卡的目的。

No, I haven't sent a thank you card. I usually just say thanks through text messages or calls because it's faster. In my culture, we usually thank people verbally.

No, I haven't sent a thank you card before. I usually express my gratitude through text messages or phone calls, as they are quicker and more convenient. In my culture, verbal thanks are more common than written cards, and I prefer to thank people in person rather than sending a card.

1. 現在完成式：「I haven't sent a thank you card before」使用現在完成式來表示直到現在為止，寄送感謝卡的動作從未發生過。 2. 比較結構：「quicker and more convenient」是一種比較結構，用來比較簡訊或電話與感謝卡在速度和便利性上的差異。