I
play和I do play有什么区别？ What is the difference between I play and I do play?
否定（大多数动词必须）：“我不喜欢蘑菇”。
Negative (obligatory for most verbs): "I don't like mushrooms".
疑问句（大多数动词必须）：“你喜欢蘑菇吗？”
Interrogative (obligatory for most verbs): "Do you like mushrooms?"
强调：“哦，你做了一些花椰菜！我喜欢花椰菜！”
Emphatic: "Oh, you've done some cauliflower! I do like cauliflower!"
对比（强调的特殊情况）。 “我不喜欢蘑菇。但我喜欢花椰菜”。
Contrastive (a special case of emphatic). "I don't like mushrooms. But I do like cauliflower".
主要动词的照应：“你喜欢花椰菜吗？” “是的，我愿意”。
Anaphoric for the main verb: "Do you like cauliflower?" "Yes, I do".
在较旧的英语和某些方言中，它可能会在这些情况之外使用，但通常不会在现代标准方言中使用。
In older English, and some dialects, it may be used outside these cases, but not normally in modern standard dialects.
