until/ən'tɪl/

1.preposition

直到…时

They didn't find her until the next day.
他们直到第二天才找到她。
2.conjunction

到…为止

She waited until he had gone.
她一直等到他走为止。
until now
直到现在
not until now
直到现在才
until then
届时
not until then
直到那时…才