英語翻譯Our offic computer broke down last week.---------- 改劃線部分

題目：

英語翻譯
Our offic computer broke down last week.
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改劃線部分 broke down 改成什麼好?
是doesn't work 還是 didn't work 還是 don't work
這幾個分別用在什麼地方?

解答：

改成didn't work
doesn't work 用於一般現在時第三人稱單數
don't work用於一般現在時
didn't work用於過去時……