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题库 / Prep2007E1-SC-133
In the past several years, astronomers have detected more than 80 massive planets, most of them as large or larger than Jupiter, which circle other stars.
most of them as large or larger than Jupiter, which circle
most of them as large or larger than Jupiter and circling
most of them at least as large as Jupiter, circling
mostly at least as large as Jupiter, which circle
mostly as large or larger than Jupiter, circling
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some of them/some除了引导完整句外，也可以用于独立结构（同位语，非从句）
eg.:
This model explains all known subatomic particles, some discovered only recently.
When at university, Tom did many travels, some of them places of interest.
名词+分词/不定式/形容词/副词/介宾短语/名词属于独立主格做状语，同时也有可能是同位语，作定语或状语
C，most of planets as large as Jupiter, circling other stars，circling作伴随状语，逻辑主语只能是planets，而不是主句主语astronomers。circling修饰的句子在整个独立句里作同位语，修饰的动词(are) as large as里的large作定语修饰planets。
从本题可以看出，状语修饰最近的动作，该动作不一定作谓语动词，分词/不定式作定语的动词同样可以接修饰状语。
（1）some of which / whom 只能引导nonessential modifier，指代的物体为人时用whom, 为物时用 which。
如：Mike’s disappointment was shared by several players who were present, some of whom were so upset that they shouted at the judge.
（3）some of them/some也可以用于独立结构，如同位语，如：
This model explains all known subatomic particles, some discovered only recently. 类似于名词+分词作同位语
Tom did many travels, some of them places of interest. 名词+名词作同位语
C，astronomers have detected more than 80 massive planets, most of them as large as or larger than Jupiter. 名词+形容词作同位语，补充说明planets
C.circling在这里不存在伴随的歧义，伴随一般是指伴随动作，因为本句唯一的句子是天文学家detected...，若认为伴随是不可的，逻辑主语就成了astronomers，逻辑错误；此处circling作定语修饰Jupiter.
另外可用固定搭配排除，as large as or larger than = at least as large as
当时解题思路为 ,circling作伴随，主语同修饰那句话的主语，变成 astronomers发出circling 的动作，所以删掉了正确选项...
as large or larger than···明显错误，只能是as large as or larger than····排除ABE；
剩下CD，D which 就近修饰到Jupiter，显然不对···排除；
A run-on sentence is one in which at least two independent clauses are joined without the appropriate punctuation. You can't have two independent clauses if you don't have two clauses, and you can't have two clauses if you don't have two verbs.
"Circling" is not a verb in C, but a modifier.
WRONG: as many or more than/so many as /as many than/three times as many more than
-ing participle 修饰前面的planets 作定语
Astronomers have detected more than 80 massive planets circling other stars. / (planets) which circle other stars.
只能as large as or larger than 所以AB选项❌
动词分词做后置定语