Verb + 到 + Destination / Time
The preposition 到 (dào) indicates a destination, endpoint, or degree. It can mean "to," "until," or "up to" depending on context. In phrases like 到底, it combines with other words to form fixed expressions meaning "after all" or "on earth."
我每天骑车到公司大概要二十分钟。
Wǒ měitiān qí chē dào gōngsī dàgài yào èrshí fēnzhōng.
It takes me about twenty minutes to ride my bike to work every day.
他到现在还没有给我回消息。
Tā dào xiànzài hái méiyǒu gěi wǒ huí xiāoxi.
He still hasn't replied to my message.
你到底想吃什么?快点决定吧。
Nǐ dàodǐ xiǎng chī shénme? Kuài diǎn juédìng ba.
What on earth do you want to eat? Decide quickly.