In Chinese, there are aspects of time instead of the past, the present and the future.
过 guò (= suffix): Aspect of Past Experience
过 guò is used to express that someone has done something at least once.
Yet, 过 guò is only used if the action or the experience can be repeated.
Structure: verb + 过 guò.
| 我 | 去 | 过 | 中 | 国 | 。 |
| wǒ | qù | guò | zhōng | guó | _ |
| I | go | pass by | middle | country | _ |
| I, me, my | go to, pass away, remove | grammatical: particle for past, pass, cross, go over, overdo, fault | China | 。 | |
| I went to China (at least once). | |||||
| 你 | 学 | 过 | 汉 | 语 | 吗 | ？ |
| nǐ | xué | guò | hàn | yǔ | ma | _ |
| you | study | pass by | Chinese ethnicity | language | particle | _ |
| you | study, learn | grammatical: particle for past, pass, cross, go over, overdo, fault | Chinese language | particle | ？ | |
| Have you (ever) studied Chinese? | ||||||