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News of the moon landing was repeated around the world by people of all ages, all races, and all religions.
注意：只有及物动词才能有被动语态的形式。不及物动词没有被动语态。 The aliens were arrived on Neptune in the 20 century.（wrong） The aliens arrived on Neptune in the 20 century. (correct, arrive是不及物动词)
被动语态永远是正确的吗？
The answer is YES, quite often, voice is a matter of choice. It has been decided by Jason that he will not attend college. Jason has decided not to attend college.
上述两个句子都是正确的，但是主动语态的句子更加正确一些。人们通常认为被动语态往往是错误的，但是GMAT正是利用了这一点把被动语态的句子弄得看起来比较奇怪，但是实际上是正确的。
It has been decided by Jason that he will not attend college next fall. Jason has decided next fall not to attend college.
上面两个句子第一个是正确的，因为第二个句子中的next fall和动词has decided连在一起，让人误以为是?明年秋天决定。。。。?错误的更改了作者的含义。
所以，不能对被动语态有偏见，不要利用语态来区别不同的答案。
如果在两个语态中选择的话，没有其他好选的情况下，就选择被动语态，你可能在主动语态中错过了错误的地方。
被动语态的句子并不是很?难看?，有时它是好的句子：
th
th
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During the operation, new blood vessels are inserted around blockages.
As a final note, you do not have to make active or passive voice parallel throughout a sentence:
The shuttle launch took place flawless and was seen on television.
第八章 对比
Once you find a comparison, identify the two parts of the sentence that are being compared to each other.找到对比的两个部分。这句话特别重要，也就是说正确的对比的句子都是有两个或多个部分的对比的。必须要找出哪个和哪个对比。这些对比的句子都是在结构和逻辑上平行的。 主要对比的标志词包括：like, unlike, as, than
Like vs.As
(1)Like是非常重要的对比的标志词，它是一个介词，所以，它之后必须跟名词、代词和名词短语，不要跟从句或介词短语，like不能对比两个名词。 Like her brother, Ava aced the test.(correct) Like之后可以跟动名词：
Like swimming, skiing is great exercise.
(2)as是既可当介词（后跟名词）又可当连词（后跟从句），as可以用来比较2
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个句子
As her brother did, Ava aced the test.
在含义上，like her brother, Ava aced the test.和As her brother did, Ava aced the test.没有区别。
保持对比部分的平行
原则1、对比部分必须在逻辑上平行，就是说对比部分必须是similar things Frank’s build, like his brother, is broad and muscular. 比较的内容不同，Frank’s build 与her brother不能比较。 Frank’s build, like his brother’s, is broad and muscular. 对比的内容一致。
That和those 代表build. That代表单数，those代表复数。
Frank’s build, like that of his brother, is broad and muscular. Frank’s toes, like those of his brother, are short and hairy. Frank, like his brother, has a broad and muscular build.
Beethoven’s music, which broke a number of established rules with its structure and melodic form, is considered more revolutionary than Bach’s.
对比必须是在结构上平行，也就是说他们必须有相似的语法的结构
I like running through forestsmore thanwalking through crowds.(correct) 省略：
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对比的句子第二部分往往会出现省略。通常用所有格形式来代表。 My car is bigger thanBrian’s(car). My car is bigger thanthe Smiths’(car).
所有格Brian’s或是Smiths’是单数还是复数都可以，根据实际情况，但是必须要保证对比的内容要在逻辑上和形式上一致。
同样也可以省略单位units,动词verbs,甚至整个句子whole clause（在对比的第二阶段），只要不产生歧义。
e.g. Whereas I drink 2 quarts of mile a day, my friend drinks 3(quarts). I walked faster than Brian(walks).
I walk as fast now as I (walked)when I was younger.
In general, you should put in the omitted words or appropriate Helping Verbs (such as be, do, and have)only if you need to remove ambiguity. Vishal eats more carrots than donuts.(省略he does，因为donuts很显然是宾语，不会出现歧义)
Vishal eats more carrots than HE DOES donuts.(wordy) e.g
I like cheese more than Yvette.(Yvette可以是主语也可以是宾语，所以必须修改以消除歧义)
I like cheese more than Yvette Does.(than Yvette likes cheese) I like cheese more than I do Yvette.(than I like Yvette)
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GMAT有时许可unnecessary helping verb in the second term of a comparison.
比较级和最高级形式的对比：
当比较2个事务时用比较级，当比较3个或以上事物时用最高级。 She is shorter than her sister.
She is the shortest of her five siblings. You are more interesting than he.
You are the most interesting person here.
注意形容词或副词比较级和最高级的特殊形式。
副词以ly结尾的，比较级用MORE
Adrian runs quickly. He runsmore quicklythan Jacob.
有些副词没有以LY结尾的，换成比较级时结尾加er Adrian runs fast. He runs faster than Jacob.
用比较级时句子中一定必须有than
I will have HIGHER bills over last year.(错误) I will have higher bills than last year.（正确） Always use than with a comparative form.