When do we use “had had” and “have had”? [duplicate] 15 There's no special magic with " had had ", they don't really go together as a pair anymore than " had wanted " go together So don't worry so much about how to use " had had " as a unit of grammar, they will come together naturally when you want to express the verb ' to have ' in the past perfect
这句为什么有两个had had? - 知乎 你好。感谢诚邀。 记住，两个 had 在一起时，就是 have 为 实义动词 的词组（如have a walk ，have a talk ，have a look （at …） ，have a swim ，have a break ，have a discussion，have breakfast lunch supper 等） 作谓语 时的 “ 过去 ” 完成时， 即： 第一个 had 是 过去完成时 的 助动词——过去完成时的标志； 第二个
What is the difference between have had and had? It is used to describe experiences one has had in the past (and that hence influence the experience with which you speak today), changes over time, uncompleted actions, and things that have happened more than once