Fixed Formulas - X了Y、Y了X
— X了Y、Y了X
Understand the use of X了Y / Y了X and their placement in the sentence.
Elements
How to use it
- For 了, take a model sentence like 吃了饭再去图书馆。 (Eat first, then go to the library) and replace only the variable information.
- Copy a model sentence (吃了饭再去图书馆。) and replace the subject/object/time while keeping the same structure.
- After substitution, verify that 了 / 不 / 没 / 吗 remain coherent with the meaning and time of the sentence.
- Context: Use this structure to describe facts or actions in a complete sentence.
Examples
吃了饭再去图书馆。
chī le fàn zài qù tú shū guǎn
Eat first, then go to the library.
我明白了。
wǒ míng bái le
I understand.
Notes and exceptions
- 了 — Aspect / change of state: Marks an accomplished event or a change in situation.
- Note: 了 is not mandatory in all past sentences.
Common mistakes
- Check the order of elements before speaking or writing.
- Use a complete sentence to validate the structure in a real context.
Practice quiz
Choose the best option for each sentence, then submit to view the correction.
1. 吃____饭再去图书馆。
(Eat first, then go to the library.)
2. 我明白____。
(I understand.)
3. Quel élément complète le mieux cette règle ?
(For **了**, take a model sentence like **吃了饭再去图书馆。** (Eat first, then go to the library) and replace only the variable information.)
4. Quel élément complète le mieux cette règle ?
(Copy a model sentence (**吃了饭再去图书馆。**) and replace the subject/object/time while keeping the same structure.)
5. Quel élément complète le mieux cette règle ?
(After substitution, verify that 了 / 不 / 没 / 吗 remain coherent with the meaning and time of the sentence.)
6. Quel élément complète le mieux cette règle ?
(Context: Use this structure to describe facts or actions in a complete sentence.)