問題: When did you start using social media?

I started using social media a long time ago, back when I was in high school. I joined Facebook because it was really popular, and it helped me stay in touch with my friends and family.

I began using social media quite a while ago, during my high school years. I joined Facebook when it first became popular, as it was a great way to keep in touch with friends and family.

1. 過去簡單時態：使用過去簡單時態（"began"，"joined"）適合形容已在過去開始並完成的動作。 2. 時間表達："quite a while ago" 用來表示過去一段不確定但較長的時間，為動作開始時的情境增添了背景。

I only started using social media a few years ago. At first, I wasn't sure about it, but then I saw how useful it was for networking and promoting my business.

I only ventured into social media a few years ago. Initially, I was hesitant, but I soon realized its importance for networking and promoting my business or personal brand.

1. 過去簡單時態：我幾年前才開始接觸社交媒體。這裡使用過去簡單時態表示一個已完成的動作，適合用來描述開始使用社交媒體的時間。 2. 對比連接詞：起初，我有些猶豫，但我很快意識到……使用「但」作為對比連接詞有效地展示了對社交媒體態度的變化。

I have never used social media. I just prefer talking to people face-to-face, and I'm worried about privacy issues.

I have never engaged with social media. I prefer face-to-face communication, and I have concerns about privacy issues that come with using these platforms.

1. 現在完成時態：「我從未參與社交媒體」使用現在完成時來表示一個從未發生過的行為，有效地傳達出持續不參與的狀態。 2. 並列連接詞：「和」的使用連接了兩個獨立的子句，「我偏好面對面交流」和「我對隱私問題感到擔憂」，顯示出兩個偏好的明確關係。