AI投资人胡奇

Subject + Verb + 了 + (Object/Time)HSK 2

动态助词“了”放在动词后面，表示动作已经完成。在HSK 2中，“了”用于描述过去已经发生或完成的动作，也可以表示某个动作持续了多长时间。

The particle "了" is placed after a verb to indicate that an action has been completed. At HSK 2 level, it is used to describe past completed actions or to show how long an action has lasted.

Subject + Verb + 哪些 + Noun + ?HSK 2

疑问代词“哪些”用于询问特定范围内的多个事物或人，后面常跟名词，表示“which ones”。在HSK 2中，“哪些”是重要的疑问表达方式，区别于“哪+量词”。

The interrogative pronoun "哪些" is used to ask about multiple specific items or people within a certain range. It is often followed by a noun, meaning "which ones." At HSK 2, it is a key question pattern, distinct from "哪 + measure word."