...提出过类似问题）。如：That was in 1929, since when things have been better. 那是1929年的事，从那时起情况就好些了。He hid himself in a tree, from where he could see the enemy in the distance. 他躲在一棵树上，从那儿他可以看到远处的敌人。请问：介词...
a surface of which one end or side is at a higher level than another; a rising or falling surface这是关于词典Oxford dictionary of English 2nd 关于名词 slope的定义。我看不懂的地方在of which 这里，以我浅显的语法能力判断 of which应该相当于 whose做连接词引...
He has to move about in a wheel-chair since five years old.
按语法规定，这个句子不太对，因为 since 前面的句子应该用现在完成时，但这个句子的谓语是 has to，它如何变为现在完成呢？难道是用 has had to? 像下面这样用？
He has had to move ...
...开车，她10岁的女儿坐在后面。
In the car accident the mother was killed, but her two-year-old son was found alive. 在这次车祸中，母亲死了，但是她两岁的儿子却还活着。
但是 25-year-old 这样的复合形容词可以用于专有名词的人名吗？比如：
...
...speed railway a
reality, the China Railway
Corporation had busied /hasbeen
busying itself in laying down over 25000 km of high-speed tracks over the past ten
years - accounting for roughly two thirds of the world's total length of
high-speed lines. 请教老师，这里为什么用过去完成...
...trance with the interest, and also the equanimity (平静), of men who had been forewarned. 这是以前没有看懂的一个句子，不知道把 of men 接到哪里，entrance? 感觉也不对。今天翻出笔记本来把它抄上来，希望老师给讲解一下，这个 of men 是怎么一个...
...个句子（在百度上可查到）：He sang much more sweetly than he has before. 他的演唱比以前要动听许多。不明白句子中than he has before的时态。按理说，这里的 than he has before 应该是than he has sung before的省略，但无论从哪方面来看，这都有问...