until 后接过去分词
[1]until单词记忆法◆记忆方法一:联想方式:un前缀(表否定);til(体力)直到体力不支,他才肯停下工作。◆记忆方法二:联想方式:un前缀(表否定);til(体力)记忆方法:直到体力不支,他才肯停下工作。

(1) If carefully _________, the experiment will be successful.
A. do B. does C. done D. doing
答案选C,可视为 if it is carefully done 之省略。
(2) The research is so designed that once _________ nothing can be done to change it.
A. begins B. having begun C. beginning D. begun
[2]beginning单词记忆法◆记忆方法一:联想方式:begin(开始);n(增加的字符);ing(名词后缀)begin的名词形式。◆记忆方法二:联想方式:begin(开始);n(增加的字符);ing(名词后缀)记忆方法:begin的名词形式。
答案选D,可视为 once it is begun 之省略。
until相关单词意思与记忆法:
until单词意思解释释义:
prep. 直到, 在...以前conj. 直到...时, 在...以前相关词组: unless and until not until It was not until...that
until单词记忆法:
◆记忆方法一:
联想方式:un前缀(表否定);til(体力)
直到体力不支,他才肯停下工作。
◆记忆方法二:
联想方式:un前缀(表否定);til(体力)
记忆方法:直到体力不支,他才肯停下工作。
until单词相关例句:
The education of a man never completed until he dies.——Robert Edwad Lee , American educator对一个人的教育,至死方止。美国教育家,李 R E
But bombs are unbeliveable until they actually fall.——Patrick White, British-born Australian novelist 直到炸弹真的掉下来,人们才相信有炸弹。英裔澳大利亚小说家 怀特 P.
I am not a bit anxious about my battles If I am anxious Idon't fight them, I wait until I am ready.——B.Montgomery, Bdritish Marshal 对于要打的仗,我一点儿也不担心。要是担心我就不打。我要等到准备好时才打。英国元帅 蒙哥马利 .B.
True friendship is like sound health, the value of it is seldom known until it be lost. 真诚的友谊犹如强健的身体,要到失去它时,才知它的可贵。
Call no man happy until he dies. 盖棺才能定论。
The chains of habit are too weak to be felt until they are too strong to be broken. 习惯之链很弱,往往感觉不到,一旦感觉到了,已经牢固得绷不断了。
A man can fail many times, but he isn't a failure until he begins to blame somebody else.——( J. Burroughs ) 一个人可以失败许多次,但是只要他没有开始责怪别人,他还不是一个失败者。(巴勒斯)
A man is not old as long as he is seeking something. A man is not old until regrets take the place of dreams. (J. Barrymore)—— 只要一个人还有追求,他就没有老。直到后悔取代了梦想,一个人才算老。(巴里摩尔)
You are not beaten until you give up. 你只要不投降就没有被打败.
It's still early. I don't have to leave until later.
还很早,我一会儿再走。
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