一道英语选择题：I didn't manage to do it ____ you had explained how.I didn't manage to do it ____ you had explained how.A untilB unlessC when D before并解释一下其他选项不选的原因.
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/23 15:10:07
一道英语选择题：I didn't manage to do it ____ you had explained how.I didn't manage to do it ____ you had explained how.A untilB unlessC when D before并解释一下其他选项不选的原因.
一道英语选择题：I didn't manage to do it ____ you had explained how.
I didn't manage to do it ____ you had explained how.
A until
B unless
C when
D before
并解释一下其他选项不选的原因.
一道英语选择题：I didn't manage to do it ____ you had explained how.I didn't manage to do it ____ you had explained how.A untilB unlessC when D before并解释一下其他选项不选的原因.
until
意为直到
我不会决定去做直到你说出为什么这么做
unless是除非,unless后不跟完成时
when是用于疑问句
before与句意就不符合了,不信自己翻译试试,哈哈
选A
意为直到你教我后，我才会做。
他用了过去完成时，所以不选其他的
A until.
选项2不对因为unless的意思是除非
首先应想到not....until...为固定搭配，意为直到....才.....初步确定答案。
从句子意思上理直到你解释如何去做之后，我才做成这件事。
manage to do sth 意为 成功做成某事。
unless意为除非，意思不符，句子语态也不符。
when意为当 明显不合逻辑
before 意为在.....之前，不能与句子前的否定式not构成直到....
全部展开
首先应想到not....until...为固定搭配，意为直到....才.....初步确定答案。
从句子意思上理直到你解释如何去做之后，我才做成这件事。
manage to do sth 意为 成功做成某事。
unless意为除非，意思不符，句子语态也不符。
when意为当 明显不合逻辑
before 意为在.....之前，不能与句子前的否定式not构成直到...才...的意思。
故选until（固定搭配，句子通顺，复合逻辑）
收起
unless是除非，unless后不跟完成时
when：当。。。时候 也用在be doing。。。when。。。be about to do...when...意思是“突然”
before与句意 不符
manage to do sth=succuceed in doing sth 是成功做了某事
所以翻译成 ：直到你解释了怎么做 我才做成。