作业帮英语定于从句单选.高手进.急-do u have any idea when the experiments was carried out?-.i hear it was not until last year[ ] their plan has been approved.A.thatB.whenC.beforeD.once答案是B为什么啊 ?还有请翻译一下题目.答案
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![英语定于从句单选.高手进.急-do u have any idea when the experiments was carried out?-.i hear it was not until last year[ ] their plan has been approved.A.thatB.whenC.beforeD.once答案是B为什么啊 ?还有请翻译一下题目.答案](/uploads/image/z/13975079-23-9.jpg?t=%E8%8B%B1%E8%AF%AD%E5%AE%9A%E4%BA%8E%E4%BB%8E%E5%8F%A5%E5%8D%95%E9%80%89.%E9%AB%98%E6%89%8B%E8%BF%9B.%E6%80%A5-do+u+have+any+idea+when+the+experiments+was+carried+out%3F-.i+hear+it+was+not+until+last+year%5B++++%5D+their+plan+has+been+approved.A.thatB.whenC.beforeD.once%E7%AD%94%E6%A1%88%E6%98%AFB%E4%B8%BA%E4%BB%80%E4%B9%88%E5%95%8A+%3F%E8%BF%98%E6%9C%89%E8%AF%B7%E7%BF%BB%E8%AF%91%E4%B8%80%E4%B8%8B%E9%A2%98%E7%9B%AE.%E7%AD%94%E6%A1%88)
英语定于从句单选.高手进.急-do u have any idea when the experiments was carried out?-.i hear it was not until last year[ ] their plan has been approved.A.thatB.whenC.beforeD.once答案是B为什么啊 ?还有请翻译一下题目.答案
英语定于从句单选.高手进.急
-do u have any idea when the experiments was carried out?
-.i hear it was not until last year[ ] their plan has been approved.
A.that
B.when
C.before
D.once
答案是B为什么啊 ?还有请翻译一下题目.
答案确定是b，只知道回答部分是个省略句，不清楚为什么选when
英语定于从句单选.高手进.急-do u have any idea when the experiments was carried out?-.i hear it was not until last year[ ] their plan has been approved.A.thatB.whenC.beforeD.once答案是B为什么啊 ?还有请翻译一下题目.答案
-你知道这个实验是什么时候开始实行的吗?
-我听说是直到去年才批准的
when在定从里知道前面的last year,在定语从句里做时间状语.last year 是先行词.
我一开始也觉得是A,是强调句，it is ... that 但是看了问句觉得确实是B.。when在定从里知道前面的last year，在定从里做时间状语。it was not until last year. their plan was approved last year.
这个地方确实应该选B
因为如果是A的话，从语法上说没错，这是not..until的强调句形式。但从意思上看就不行了。
有字数限制，我不能多说。你仔细考虑问和答的关系，其实这是个定语从句，last year 是先行词。
A
until... that是固定搭配
=更新=
不好意思没看清 答案是B吗？我觉得不对啊.... 不如等你老师讲解了后短信告诉我一下可以吗 呵呵
翻译：
-你知道这个实验是什么时候开始实行的吗？
-我听说是直到去年才批准的