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- present perfect - When is it necessary to use have had? - English . . .
I have come across a few sentences that contain "have had" I would like to know in what kind of situations we should use this combination
- 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
- 如何正确理解 had done、have done、have been doing 这 3 种时态？ - 知乎
如何正确理解 had done、have done、have been doing 这 3 种时态？ 语法书上的那些解释，看来看去都不是很能理解，也谢绝照搬语法书的解释。 看一次，过一段时间又忘了，总不是能很好的区分，也不知道怎么很好的实用这三种时态。 … 显示全部 关注者 1,412
- Xiaomi HAD端到端全场景智驾正式发布，有哪些亮点？ - 知乎
Xiaomi HAD端到端全场景智驾正式发布，有哪些亮点？ 36氪获悉，小米董事长兼CEO雷军发布微博表示，Xiaomi HAD端到端全场景智驾正式发布，已开启全量推送。
- tenses - has changed or had changed or was changed? - English . . .
If I want to say Let's check if the entry ____, and do this and that if so which one should I use? has changed had changed was changed has been changed And an explanation would be great!
- Struck vs Stricken - English Language Usage Stack Exchange
Is struck or stricken correct in these sentences? The house was stricken struck by lightning The house had been stricken struck by lightning He was stricken struck by grief, cancer, etc C
- tenses - Using have ran or have run - English Language Usage . . .
I was editing a piece recently and saw this structure "Once you have ran the process, you " I have always used "have run", but wasn't sure if "have ran" is acceptable in modern English If it
- How do you handle that that? The double that problem
74 Have you ever had a case where you felt compelled to include strange things like a double that in a sentence? If so, then what did you do to resolve this? For me, I never knew whether it was acceptable grammar However, what I did learn was that it was a logic distractor, could lead to confusion, and therefore should be reworded to avoid this
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