in vain __________ to persuade her to give up her wrong opinion and cooperate with usA.we tried B.we had tried C.did we try D.had we tried 为什么?

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in vain __________ to persuade her to give up her wrong opinion and cooperate with usA.we tried B.we had tried C.did we try D.had we tried 为什么?
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in vain __________ to persuade her to give up her wrong opinion and cooperate with usA.we tried B.we had tried C.did we try D.had we tried 为什么?
in vain __________ to persuade her to give up her wrong opinion and cooperate with us
A.we tried B.we had tried C.did we try D.had we tried 为什么?

in vain __________ to persuade her to give up her wrong opinion and cooperate with usA.we tried B.we had tried C.did we try D.had we tried 为什么?
in vain 表示否定意思,放在句首要部分倒装,就是说把助动词（或情态动词）提到主语前面,原句应该是一般过去时,所以用did放在we前面,后面动词原形,类似的还有no,seldom,hardly等这些表示否定的词放句首也部分倒装

这句话是意思是We tried to persuade her to give up her wrong opinion and cooperate with us,but in vain. 它把in vain提前了,所以要倒装下,于是成了did we try了.

everything is in vain in the vain 和in vain 的区别是什么 英语翻译If you haven’t got the product right all your branding effort will be in vain. you can't __________(eat)in class. in vain attempt to do是什么意思啊..in vain effort to do和in the vain hope that 呢... in vain的意思及造句是? In vain 有否定含义吗 all in vain谁写的?rt 介词后不是不能接形容词吗?可句中in vain,vain是一个形容词啊. Dick picked up the broken cup and tried () to put them together.A.in person B.in vain C.in t...Dick picked up the broken cup and tried () to put them together.A.in person B.in vain C.in time D.in order in vain __________ to persuade her to give up her wrong opinion and cooperate with usA.we tried B.we had tried C.did we try D.had we tried 为什么? Don't wear jeans,or you __________ (not let) in. 介词后加形容词相当于?如in+vain 求 Proof that Jesus died in vain 的翻译 All these efforts were in vain..是啥子意思? train in vain 想了好久想不明白 all my ____(努力）were in vain Against boredom the gods themselves fight in vain