...r-fed rivers changed their course,
dramatically affecting the water supply and agriculture; or that the cities
could not cope with an increasing population, they exhausted their resource
base, the trading economy broke down or they succumbed to invasion and
conflict; and yet others that
climate chan...
He says he is tired.
He said he was tired.
He said he had been tired.
请问老师这三句话怎么理解?我完全不明白第 1 句和第 2 句。他说自己累,这个说的状态一旦形成不就是过去了吗?不过去就没有说啊~! 怎么会有says呢?
我好像陷入...
The fight for India’s freedom had been won without a battle having ever been fought.请问老师们:(1) 句中的 without 结构不是独立主格,应该是 without 介词短语,是吗?(2) having ever been fought 是现在分词作 a battle 的后置定语,请问为何是“现在分词...
She wouldn't sing it if she hadn't learnt it.脱离语境,上句是否有2种理解呢?真实的或新的吗?章振邦的新编高级语法书上510页,说上句可用unless改写=...unless she had learnt it.我的困惑是:1)上句如果是虚拟语气,怎么可以用unless改...
...suicide.You're in stage one. Denial.B:What stage are you in?A:Denial.B:And thinking about suicide.这句省略了什么?意思是什么?A:Yeah, okay. It's just a frame of...
But irrigation entailed the risk that human digging of ditches and canals could lead to sudden heavy water runoff from rainstorms, digging further down into the ditches and canals and carving out deep channels called arroyos.与 digging further down into the ditches and canals and carving out deep c...
And now what are the most prized lots for auction here today, Lot D, this Victorian Rosewood Chiming Grandfather clock. Can I start the bidding at 250 pounds? (1995年专业四级听力第8题)。今天这里举行奖给多的拍卖。Lot D, this Victorian Rosewood Chiming Grandfather clock.是...