从释义区别来看，"before"和"until"都是与时间和顺序有关的词。然而，它们在用法、使用环境、形象和影响范围上存在一些区别。1. 用法区别：- "before"表示在某个时间、事情或事件之前发生。例句：I wake up before sunrise.（我在日出前醒来。）- "until"表示某一时间之前一直持续或发生。例句：She...
(3)The holiday came to the end before I knew it. (4)He almost knocked me down before he saw me. 2.主句谓语动词强调动词的迟缓性,只用before,常伴有时间段状语或时间段暗示。例: (1)It was quite some time before he found the elephant at all. (2)We had walked a long way before we ...
(1)We discussed the problem until/before he came back.我们一直讨论到他回来.(2)We didn't discuss the problem until he came back.我们一直等到他回来后才讨论问题.2.not…until句型尽管在某些情况下可与before互换用,但在强调句中一般仍用until.(1)It was not until he told me that I knew it.(2...
by the time是等于when。其中by the time有一种用法，表示到……为止，一般和完成时连用。当表示…的时候可以和when互换。 例句：I will leave by the time you arrive.等你到了我就走，可以用when代替。when和by the time引导的时间状语从句。1、by the time：到…时候为止指从过去某一点到，...
One night, as Mother came into my bedroom, I said, “Mom, tomorrow is John’s birthday, and he’s not going to get anything. Nobody cares.”“Don’t worry,” Mom said as she kissed me goodnight. “I’m sure everything will be fine.”I wished John a happy birthday in the ...
B. After he came to America. C. When he was 15 years old. 19. How does the speaker feel about his teacher? A. He’s proud. B. He’s sympathetic. C. He’s grateful. 20. What does the speaker mainly talk about? A. How education shaped his life. B. How his language skills im...
It was not long before the whole country rose up. 不久全国人民奋起反抗。 三、下列情况一般使用until 1.主句是持续性谓语动词时,肯定,否定都可以,但意义完全不同,肯定表示动作终止,而否定表示动作开始。For example: 1)We discussed the problem until/before he came back. 我们一直讨论到他回来。
An amateur naturalist came across a new species of orchid ___21___ other flowers in Tokyo. Scientists also found the flower elsewhere in other districts, an indication that the new species ___22___ deserve further...
3) The holiday came to an end before I knew it. 2、主句谓语动词强调动作的迟缓性,只用before,这时常伴有时间段状语或时间段暗示。 It was quite a long time before he found the elephant.过了很长时间,他才找到大象。 We had walked a long way before we found some water.走了很长的路我们才找...