2013高考英语备考:from time to time 用法说明
from time to time now and again means now and then 时而 sometimes once in a while at times now that; due to; because of; owing to; since; as now that作“既然”讲时,相当于since。now that中的that 可省去。如:Now(that)you are well again, you can travel, 你既然恢复了健康,就能够...