the last half of the nineteenth century ____ the improvement in the means of travela.has witnessedb.witnessed为什么选b不选a 为什么不可以用现在完成时
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thelasthalfofthenineteenthcentury____theimprovementinthemeansoftravela.haswitnessedb.witnessed为什么选b不
the last half of the nineteenth century ____ the improvement in the means of travela.has witnessedb.witnessed为什么选b不选a 为什么不可以用现在完成时
the last half of the nineteenth century ____ the improvement in the means of travel
a.has witnessed
b.witnessed
为什么选b不选a 为什么不可以用现在完成时
the last half of the nineteenth century ____ the improvement in the means of travela.has witnessedb.witnessed为什么选b不选a 为什么不可以用现在完成时
这是陈述过去事实,与现在无时间关联,这从主语the last half of the nineteenth century “19世纪后半叶” 可以看出
a
the last half of the nineteenth century 这是过去的一段时间 并没有持续的现在不能用完成时，所以要用过去时
谁能帮我解释The last half 渚媡he last half of the nineteenth ce帽tury
翻译 the last half of nineteenth century wintnessed the steay improvement in the means of travel
half of the
Half of the apples (is )bad .（Are )there any people in the room last night?
by the end of last month ,they had finished half of their work 是什么时态
the other half of me
the half of my life
Half of the apples ____good.
half the class 与half of the class的区别
half the sky half of the sky区别
half the books还是half of the books?
Half of the time to pursue the
last of the
last of the
the last of
Last Mile of the
Half of the work in our office ____by the computer last year 用was done 还是were done
In britain and japan inflation is running half a percentage below the rate predicted at the end of last