When learning Mandarin, one of the key elements to sounding more native and fluent is understanding how verb-result structures work, especially with the negation word "bù" (不). Many learners struggle with the correct position of "bù" in phrases that express inability or failure to complete an action. The common pattern is: Verb + bù + Result. For example, 看不懂 (kàn bù dǒng) means "can't understand by looking," which illustrates the proper placement of "bù" between the verb 看 (to see/read) and the result 懂 (to understand). A frequent mistake is to place the "bù" after the verb-result compound or before the verb, which sounds unnatural to native speakers. Another example is 赶不上 (gǎn bù shàng), meaning "can't catch up." Here again, the negation "bù" is positioned after the verb 赶 (to catch up) and before the result 上 (to reach). If you say something like "不赶上" or "赶不上不," it will confuse native speakers or be perceived as incorrect. Mastering this structure not only helps with negation expressions but also improves your ability to describe failed attempts or inability to achieve something. It’s essential to remember that "bù" is inserted between the verb and the result complement in these cases, forming a neat and natural-sounding phrase. In daily conversations, these phrases come up often, so practicing them will significantly boost your Mandarin skills. Try to create your own examples using verbs and results you know, and experiment with placing "bù" correctly. This practice trains your ear and speech to be more authentic, making your Chinese sound less textbook and more like a native speaker’s. Ultimately, understanding the verb + bù + result structure opens up a clearer way to express negation in action-related sentences and will add confidence to your Mandarin communication.