885 sec 3-24

hpp920

最根本的原则是：无歧义就能省就省；有歧义则该补就补

1、I am taller than he (is).    要省略（主句无宾语，主语比较很明确）

2、China has more people than Canada has.       要补，以明确 Canada 不是与 people 比

3、885 sec 3-24
   a civilization （a thousand years more ancient than the city ）.
   括号部分作定语修饰 a civilization
   定语从句结构为  a civilization was a thousand years more ancient than the city --情况同 1

4、170中 making the construction industry’s economic health much more robust than it was five years ago 是伴随状语
     结构是 a large rise makes the economic health more robust than it was five years ago.
     more rebust 是宾补， 加上 it was 更明确表明比较对象是 economic health 而不是 a rise

此规律太难掌握，唉！难 ...

都同意, 但有一点不同意)

我觉着it恰恰是指代a rise. 这句话补全是:  than it (即:a large rise) was (making the economic health robust) five years ago.
如果不加it was, 这句话就是than (the economic health ) five years ago.因为the economic health 前面已提及, 应被省略.

所以加it was更明确表明比较对象是a rise 而不是 economic health

不对的话, 大家批判!!!!!!!!!!!!!!!!

LES

170中的it was是指economic health was，因为making的逻辑主语并不是a rise, 这种分词放在句末的结构中，分词是表示前面整个句子对后面的影响，请参考OG259。

259. Five fledgling sea eagles left their nests in western Scotland this summer, bringing to 34 the number of wild birds successfully raised since transplants from Norway began in 1975.

(A) bringing
(B) and brings
(C) and it brings
(D) and it brought（A）
(E) and brought

Choice A is best. The “-ing” (present participle) form introduces action that is simultaneous with the action of the main clause; i.e., bringing indicates that the number of wild birds became 34 when the sea eagles left their nests. In B, there is no subject available for the singular present-tense verb brings. The subject cannot be eagles, since that noun is plural and the action of its verb left is in the past. Neither C nor D contains a grammatical referent for it. In E, the use of and brought implies two discrete actions on the part of the eagles, and thus lacks the clarity of the best answer, where bringing underscores the cause-and-effect nature of the situation.

hpp920

TO les: 多谢提醒!!!! 仔细想了想, 认为自己错了. 不过原因是我的结论有逻辑错误:如果it 指代a rise in the coming year, 它不可能在五年前出现．MM举的例子非常好, 是典型的现在分词做结果壮语, 逻辑主语可看做前面的句子. 但我认为这里的making是伴随状语. boost 和make不是两个分离的动作, 如果说boost了十年, 十年后才使经济生机勃勃吗?我觉着是boost的同时,就使得经济蓬勃.

ＭＭ再看看，再批我，我才会有进步，多谢了先！！！！！！！！！！！！

yanglanda

it 指代health ,是对抽象名词的指代，表示同一对象，因此必须标出同一对象在不同情况下的不同状况，这就需要谓语动词来表现。

如果是不同事物，就不用it，也不用补出谓语。

我自己的感想。

remona9t

. In his eagerness to find a city worthy of Priam, the German archaeologist Schliemann cut through Troy and uncovered a civilization a thousand years older as was the city Homer’s heroes knew.
对于比较结构，自己也总结了一点，像上面这道题的结构，对于我来看是这样的：

a civilization (that is) a thousand years older than..

对于主系表结构， than 前面没有其他的内容时，than后面指需要补出主语即可；大家可以在大全例查一下，凡是这种结构，都是这样处理的。

对于第二个问题：XDF也有过总结，than不可以合时间状语直接连接，对于ten years ago这种类型的题，一定要加上it was；they were；

discussion is more than welcome!

nyc_cfa

I think remona9t's explanation so far is the best.

完全不同意这个说法：

2、China has more people than Canada has.       要补，以明确 Canada 不是与 people 比
这里面没有什么歧义。

livary

出现时间状语，助动词必须补出，以明确时间性。

openmind

我有個很笨的問題,還望大家不要笑我...

885 sec3-24的ANS(C)如果去掉was可以對嗎?

也就是說older than可不不以拿來用於非生命的比較.

還是說非生命的比較要表較古老僅能用more ancient than?

jxjiao

the story is as old as hills.

one of the oldest traditions

personally, here the word "ancient" is better than "old" to decrible things found by archaeologists

juliet01192000

i agree with
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jxjiao.

我想是和修辞的优美有关。：）