考点一、时间状语从句
引导时间状语从句的词语主要有: when, while, as, after, before, since, ever since, until/till, whenever, as soon as, once, directly, immediately, instantly, hardly / scarcely… when, no sooner…than, the (very) minute / instant / moment, the first / second… / last time, last/next/any/each/every tim e, by the time, all the time, the whole time等。
