"had" 是一个英文单词，读作 /hæd/，这个词是 "have" 的过去式和过去分词形式，表示过去某个时间点或动作的完成，它在英语中经常用于描述过去的事件、经历或者状态。
1、Yesterday, I had lunch with my friends.(昨天，我和朋友们一起吃了午餐。)
2、By the time she arrived, we had already finished our work.(她到达时，我们已经完成了工作。)
3、He had a lot of trouble understanding the concept.(他很难理解这个概念。)
"had" 还可以用作情态动词，表示推测、假设或请求等语气。
1、Had you seen that movie before?(你以前看过那部电影吗？)
2、I had hoped to go on vacation this year, but I couldn't get time off work.(我本希望今年能去度假，但我没有请到假。)
3、Had you considered other options before making your decision?(在做决定之前，你有没有考虑过其他选择？)
