点击下方单词,选择对的这个单词
副词
1. 此前;迄今Heretofore means 'before this time' or 'up to now'.
1. used in negative statement to describe a situation that has existed up to this point or up to the present time
e.g. So far he hasn't calledthe sun isn't up yet
Synonym: so farthus farup to nowhithertoas yetyettil nowuntil now
多通过句子记忆单词,而不是单独死记硬背。