备战高考英语语法：状语从句

备战高考英语语法：状语从句 状语从句在句中相当于副词，做状语，又叫副词性从句。 状语从句分为时间状语从句、条件状语从句、地点状语从句、原因状语从句、目的状语从句、让步状语从句、结果状语从句、方式状语从句和比较状语从句。 1．时间状语从句⑴当......的时候：when, as, while I fell asleep when/as/while he was doing his exercises .他正作练习时我睡着了。 When he arrived in Shanghai , his mother met him at the station .他到上海时，他妈妈到车站接他。 While John was watching TV, his wife was cooking.当约翰看电视的时候，他的妈妈在做饭。 She always sings as she walks .　她总是一边走一边唱。 注意：when 引导的时间状语从句中的谓语动词可以是持续的也可以是瞬时的;while和as引导的时间状语从句中的谓语动词必须是持续的。 ⑵一......就...... as soon as, the minute, the moment，the instant，immediately , directly, instantly, no sooner … than..., hardly …when..., scarcely…when... The children ran away from the orchard(果园) the moment they saw the guard.孩子们一看到守卫就从果园跑掉了。 No sooner had I arrived home than it began to rain.我一到家天就开始下雨。 ⑶直到...... till,until, not...until...（直到......才......，not翻译成“才”） I didn’t realize how special my mother was until I became an adult.直到我长大成人，我才意识到我的妈妈是多么特别。 ⑷......次......的时候 every/each/the last/next/any/the first...time E