In today's elementary class we teach you lots of "time spent doing" sentences, for example, "I have been studying for X amount of time", or "Yesterday, I read my book until.... e.g: 昨天 我 看书 看到 9点 Time Phrase VO V 到 TIME Yesterday I read book, read until 9 o'clock Episode link: https://www.chinesepod.com/4005
