到昨天上午八点为止，我已读完了这本书。

I had finished reading the book by eight a. m. yesterday.

youdao

这一招很有效，到昨天上午上班时，已经没有任何隐痛了，而且经芦荟胶敷过后，烫伤处不起泡。

This actually was very effective, when I got to work yesterday morning, the pain was gone completely. And it left no blister on the burnt skin, either.

youdao