快晕了！！这个thus的用法！！互相矛盾啊矛盾！

雅燃

1.GWD5-Q34:Many entomologists say that campaigns to eradicate(vt根除)  the fire ant in the United States have failed because the chemicals that were used were effective only in wiping out the ant’s natural enemies, which made it easier for them to spread.  
A.      which made it easier for them      
B.      which makes it easier for it    
C.      thus making it easier for them
D.      thus making it easier for the ant  
E.      thereby, it was made easier for the ant
选D
可是。。。
OG12-78.Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old,made it the earliest known mammal of the Greater Antilles Islands.
(B) sloth, that they found in Puerto Rico in 1991, has been dated at 34 million years old, thus making it the earliest mammal known on
(D) sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on
    正确答案是D。
B中，咱知道不用“，thus doing”判断的话，B为啥子错。可是新东方李希强老师的PPT讲解说“Making前面没有thus, thus对应and。”
据我所知
Thus 的用法。
adverb (formal)：in this way; like this。
Many scholars have argued thus.The universities have expanded, thus allowing many more people the chance of higher education.
或者当连词as a result of sth just mentioned：hence, therefore。这是连词！老PP笔记里有说，表示因果关系的词如thus,therefore等，要用用and连接表示先后关系，因为只有原因发生了，结果才会发生。
He is the eldest son and thus heir to the title.We do not own the building. Thus, it would be impossible for us to make any major changes to it.

总之，thus到底怎么用？李希强老师说的到底啥意思？

雅燃

自顶！！快来人啊

cycyang

这两题中，"thus"都没有问题。thus是副词，只要意思上正确，不会影响句子结构的。

OG12-78.Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old,made it the earliest known mammal of the Greater Antilles Islands.

(B) sloth, that they found in Puerto Rico in 1991, has been dated at 34 million years old, thus making it the earliest mammal known on
此项错误不在“thus"，而是“they”，因为指代不明。（参看OG解释）

qiaohengsdu

这个题错误不在“thus” 而在于指代不清

kevinsuper

不能简单拿某个老师某句话当圣经，所有的判断原则都是有优先级别的，这俩题都跟thus没啥关系。

balapupu

B还有一个错的地方是that从句要紧靠所修饰的名词，不可以用逗号隔开。

lonski

B的has been应该是have been (fossils).另外it指代不清

FTKJ

谢谢谢谢