OG 118 解释有错？

xuyidan1210

118. Students in the metropolitan school district lack math skills to such a large degree as to make it difficult to absorb them into a city economy becominq ever more dependent on information-based industries.
(A)        lack math skills to such a large degree as to make it difficult to absorb them into a city economy becoming
(B)        lack math skills to a large enough degree that they will be difficult to absorb into a city's economy that becomes
(C)        lack of math skills is so large as to be difficult to absorb them into a city's economy that becomes
(D)        are lacking so much in math skills as to be difficult to absorb into a city's economy becoming
(E)        are so lacking in math skills that it will be difficult to absorb them into a city economy becoming
E correct. In this sentence, the present progressive verb are lacking reveals an ongoing situation; the construction so...that is clear, concise, and correct。答案能选出E没问题，但是

since lacking is an adjective, how can OG say it is a progressive verb? Moreover, lacking is preceded by so.....我横看竖看坐看右看都想不通啊。。。。各位有何高见？

dingxiang

同意, 我认为这里lacking 是adj, 而非动词的进行时

ad264

lack可以當動詞
所以are lacking是進行式

xuyidan1210

以下是引用ad264在2008-6-18 16:46:00的发言：
lack可以當動詞
所以are lacking是進行式

但问题是前面有个SO，SO后面不可能跟动词啊。

jwawa

OG里面本来的解释就是 the present progressive verb "are lacking" reveals an onging situation. 显然他们是一起组成的时态啊？ 语法问题在哪里啊？如果，你要用lack的现在进行时来说这个句子，你不这么写，还能怎么写呢？

可是，我的问题是，我记得好像有个主从句的时态规则，什么主将从现在，主完从过完的。好像是新东方老师的口诀。似乎是主句的时态比从句要将来一个时态，这里怎么是反的呢？ 主现在从将来的。没有关系的吗？

不过，从逻辑上来看，今天的学生，明天的workforce，到是这么个时态逻辑。嗯～～

xiao_s000

我的理解是 LACKING 在这里就是一个ADJCTIVE ，becomeing ....是一个分词短语修饰economy. OG的解释有问题