once是什么意思中文 once是什么意思 英文once是什么意思

今天接着讲完引导时间状语的连词,再做几道相关高考真题 。
1. 表示“一...就”引导时间状语的连词各有什么特点
1)once一旦…就,表示以现在时间为起点,将来的情况 。从句通常用一般现在时代替一般 将来时,也叫“主将从现” 。
, you'll have choice to obey them.
2)as soon as一…就…,表示以现在时间为起点,过去或将来的情况 。从句通常用一般过去时或用一般现在时代替一般将来时 。
I will phone you . 用一般现在时代替一般将来时
, she knew there was something wrong. 从句用一般过去时
【once是什么意思中文 once是什么意思 英文once是什么意思】
3) hardly/scarcely…when, no sooner…than 刚一…就, 表示以过去时间为起点,过去的情况 。从句通常用一般过去时,主句用过去完成时 。
Hardly/scarcely had I entered the gate .
No sooner had I come home .
4)因为否定词hardly/scarcely, no sooner句置于首,主句主谓要倒装 。
Hardly/scarcely had I entered the gate . = I had hardly/scarcely entered the gate .
No sooner had I come home . = I had no sooner come home .
5) 有的考生还会因记不住哪个搭配是when,哪个搭配是than而烦恼,记住no sooner是比较级,比较级与than搭配就OK了 。
5. since表示“从…以来”的时间起点 。
1)如果since从句的动作是短暂动词,则时间从开始算起 。
It is five years . 他吸烟五年了 。
=He has smoked for five years. it is + 段时间 + since是现在完成时的另一种表达句式
2)如果since从句的动作是持续动词,则时间从结束算起 。
It is five years . 他戒烟五年了 。
=He hasn’t smoked for five years.
6. whenever比when语气更强 。
, tell me at once. 无论何时
, tell me at once. 当...的时候
相关高考真题:
1.(2011 广东)My friends walked me to the bus stop and waited with me
<17.__until__ the bus arrived>. 主句谓语walked和waited都是持续动词,句意符合“直到...才”的逻辑 。
2. (2011 江西)29. Please call my secretary to arrange a meeting this afternoon, or < whenever > it is convenient to you. 无论什么你方便的时候
3. (2011 浙江)4. One Friday, we were packing to leave for a weekend away . 主句谓语是过去进行时,从句有“这时”的意思 。
4. (2011 四川)6. As it is reported, it is 100 years since Qing Hua University was founded. it is + 段时间 + since是现在完成时的另一种表达句式 。
5. (2011 辽宁)25. He had no sooner finished his speechthanthe students started cheering. no sooner是比较级,与than搭配 。