until.的用法.ppt

“直到”你学会until“为止” 主讲人：曾彩霞 2018年1月28日 until既可以用作介词，又可用作连词。作介词时，后面要接具体 的时间；作连词用时，后面要接状语从句。 I shall stay here until the next day. I will keep singing until I get too old to sing. 介词 连词 until 在肯定句中，意为“到为止”谓语动词一般要求是延续的， 如：work，live，stay，study，play，wait等，表示动作一直 延续到until所表示的时间为止。 worklivestaywaitplay until until 【练一练】 Things went well _ one night an accident happened. 我想在这儿呆到圣诞节。 _. until Id like to stay here until Christmas until Notuntil在否定句中，意为“直到才 ”，表直到until所表示的时间才发生。 The little girl didnt fall asleep until her mom read a story. 基本结构：not主句+until从句 主句 从句 until not until They didnt stop getting on the train until it was full. not until I didnt realize she was a famous star until she took off her sunglasses. not until 【练一练】 You cant have this football back _ you promise not to kick it in class. A .because B. since C .when D. until 【答案】D not until 我的弟弟今天早晨直到九点才起床。 _. My younger brother didnt get up until nine this morning 直到妈妈回来我才吃晚饭。 _. I didnt have dinner until my mom came back not until 倒装结构：not until+从句+倒装的主句 I did not realize the importance of team work until I became monitor of our class. Not until I became monitor of our class did I realize the importance of team work. 主句 从句 Not until 从句 主句 Not until until（till)： 直到 为止 not . until ：直到才 易错点： 1.何时用until 和notuntil （从时间轴分析：until用在时间点前、not until用在时间点后） （从中文分析： 看句中中文：until直到 , not until直到才） 2.连词until引导的从句中谓语动词的时态: 主句一般现在时，从句一般现在时/ 现在完成时。 CC doesnt wake up until I come back everyday 主句一般将来时，从句一般现在时/ 现在完成时。 CC wont stop eating until I say “NO”. 主句一般过去时，从句一般过去时/ 过去完成时。 CC didnt go back home until it was dark yesterday. 3.连词until引导的从句中谓语动词的类型: until ：直到为止（肯定句），主句动词必须是延续性动词。 not until 直到才（否定句），主句动词必须是非延续性动词。