原书 PDF 第 1391—1392 页
a light snow
… and a light snow was falling. (Reading Laboratory, Book 2, p. 5)
当 snow 作“雪”“雪花”解时, 是个物质名词, 例如, Rain falls in summer; snow falls in winter. 但是, 当 snow 作“具体的一场雪”时, 就转化为可数名词了:
It was bitterly cold, and a heavy snow was falling. (Sinclair) 天气真冷，正在下着大雪。
one of the heaviest snows this winter(LDCE) 今年冬天最大的几场大雪之一
a heavy snow
下面是《大学英语四级考试常见错误分析》(p.5)对 a heavy snow 的正误分析： “误: The traffic is so terrible this morning result from a heavy snow last night. 正: The traffic is so terrible this morning result from a heavy fall of snow last night. 译: 由于昨天夜里的一场大雪, 今天早上交通混乱。 析: snow 是指一般的雪, 是不可数名词, 一场雪不可以用 a snow, 要用 a fall of snow, snows 指积雪。” a heavy snow 真的不能说吗?
见 snow 。此外，上面的句子结构是错误的。
It was raining, ____ we had to stay at home. A. or B. so C. for D. and
《高中英语语法练习手册》(外研社, p. 166) 给的答案是 D。能否选 B(so) 呢?
上面的试题有失误之处:出题者忘记了连词 so 可以表示“结果”或“推论”,引出另一个分句。往往可以译为“所以”,“因此”(and for this reason; therefore):
It was still painful so I went to see a specialist. 还是很疼,所以我找专家看了看。
You know I'm telling the truth, so don't interrupt. 你知道我说的是实话，所以不要打断我。
All machines are slightly different, so you need a short lesson when you start work in a new office. 所有这些机器都有些不同，因此，当你在一个新的办公室开始工作的时候，你得进行一次短期的学习。
I had a headache, so I went to bed. 我头痛，所以就上床睡觉了。
[试题句意]正在下雨,所以我们不得不留在家里。
A is equal to B, B is equal to C; ____ A is equal to
I was very thirsty, ____ I asked for some water to drink.