约 685,000 个结果
在新选项卡中打开链接
When do we use “had had” and “have had”? [duplicate]
What does "had had" mean? How does this differ from "had"?
present perfect - When is it necessary to use "have had"? - English ...
What is the difference between "have had" and "had"?
grammar - Use of "have had" , "had had", "has had" - English …
have somebody do something vs. have somebody doing something
tenses - "has changed" or "had changed" or "was changed"?
contractions - How can we distinguish between "I would" and "I …
“Had not” vs. “have not”? - English Language & Usage Stack …
What is the correct word order between "have/had", "been", and …