| Location | Interpretation | Examples |
| Book 1 Lesson 5 | “le” is used at the end of a sentence to indicate the appearance of changes or new circumstances. | 你女儿几岁了？ 我朋友的女儿今年四岁了。 他女儿今年20岁。 |
| Book 1 Lesson 14 | “le” indicates occurrence or completion: 1. Used at the end of a sentence. 2. It is used to have an object after a verb, and the object after the verb must have an attributive before the object, such as a quantifier or an adjective, a pronoun, etc. | 我去商店了。 他买了一点儿苹果。 你看见了几个人？ |
| Book 2 Lesson 10 | “不要……了” “别……了”means prohibition and dissuasion. | 不要看电视了 别看书了。 |
| Book 2 Lesson 15 | “要……了” indicates the state of the action, which is about to happen. | 要下雨了。 |
| Book 2 Lesson 15 | “都……了” can mean “already”, and usually contains a tone of emphasis or dissatisfaction. | 都等她半个小时了。 |
| Book 3 Lesson 5 | The modal particle “le” is used at the end of a declarative sentence to indicate that the situation has changed or a new situation has occurred. | 我现在没钱了。 我前几天有点儿发烧，现在好多了。 |
| Lesson 1 on Book 6 | “别提多……了” means that the degree is very deep, and there is no need to go into details. With an exaggerated tone. | 这个人办事，别提多负责了。 |