Result complements "-dao" and "-jian"
Result complements are a huge topic in Chinese grammar, but you can approach them in stages. The structure you come across the most is a verb with 到 (dào) or 见 (jiàn):
Subject + Verb + 到 + Object
What 到 does is indicate that the outcome of the verb is achieved - what its result is. Without them, the sentence would describe only the action itself. In English "to look" is similar to "我看" and "to see in English.
Subject + Verb + 见 + Object
Some examples:
- 听 到 了 吗?
- 你 看 见 了 那 个 人 吗?
- 我 买 到 了 一 些 水果。