請教大大
以下差別在哪？怎麼翻譯？
1. When we arrived , she made some coffee.
When we arrived , she was making some coffee
2. I read a good book last night.
I was reading a good book last night.

When we arrived , she made some coffee. 表示兩件事發生的時間差不多，沖咖啡可能還稍微晚一點。When we arrived , she was making some coffee. 則強調兩件事發生的時間有重疊。I read a good book last night. 只是簡單地敘述我昨晚作了什麼事。I was reading a good book last night. 還有多表達那件事用掉了我一些時間的意思。