※ 引述《dfast (d宅)》之銘言：
: The product was released in 2012.
: The product was relased last week/month/year.
: The product is now released.
: 請問表達過去事物時，都是一定要用過去式嗎?
: 如果是用描述方式，不能用現在式嗎?
給你幾個例子或許可以幫助你了解
1. Did you finish the report?
Yes, it's done. 你只是想表達報告已完成這個事實
Yes, it was done 2 days ago. 你想表達報告兩天前就已經完成.
2. 假設有種玩具叫做xxx
xxx is made in Germany. 表達的是所有這類型玩具都是在德國製造
Jason has a xxx and it was made in Germany.
表達的是Jason手上的那個玩具是在德國製造.
也就是當專指特定某個對象時, 多半會用過去式.
3. 過去式還能表達某件事在過去是一個事實, 但現在已經不是這麼一回事
比如 This car was made in Germany from 1900 to 1960.