OG 6

6. In virtually all types of tissue in every animal species, dioxin induces the production of enzymes that are the organism's trying to metabolize, or render harmless. the chemical that is irritating it.

(A)  trying to metabolize, or render harmless, the chemical that is irritating it

(B)   trying that it metabolize, or render harmless, the . chemical irritant

(C)  attempt to try to metabolize, or render harmless, such a chemical irritant

(D)  attempt to try and metabolize, or render harm­less, the chemical irritating it

(E)   attempt to metabolize, or render harmless, the chemical irritant

Although an "-ing" verb such as trying can sometimes be used as a noun, the phrase the organism's trying to metabolize in A is unidiomatic because trying is used as the object of organism's. In B, trying that it metabolize is ungrammatical. The noun attempt could follow organism's; also, it would parallel the noun enzymes, and parallelism is needed here because the sentence uses the linking verb are to equate enzymes and attempt. In C and D, however, attempt to try is redundant. Choice E, which says attempt to metabolize, is best. The phrase the chemical irritant is also the most concise and precise conclusion for the sentence because it clearly refers to the dioxin mentioned earlier.A,B我看不懂,为什么用trying不可以阿?

因为其他选项有attempt，这个词比trying好，所以trying就不能用了。

请问，OG里的这句话：

Although an "-ing" verb such as trying can sometimes be used as a noun,

the phrase the organism's trying to metabolize in A is unidiomatic because trying is used as the object of organism's.

是不是说，trying可以做名词，但是不能充当宾语

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=67319&replyID=1098772&skin=0

请看第10楼.