（D） but also damage or destroy（D）
（E） but also causing damage or destroying
Choice D， the best answer， correctly employs the correlative construction not only x but also y， where x and y are grammatically parallel and where both x and y （damage and destroy） apply to young plants. Choices A， （not only.。. and also）， B （not only.。. as well as）， and C （not only.。. but they also） violate the not only.。. but also paradigm. Moreover， B contains terms （blow.。. damaging） that are not parallel. In C and E， damage is used not as a verb with young plants as its direct object but as a noun receiving the action of cause; consequently， these choices fail to state explicitly that the damage is done to young plants. E also violates parallelism （not only blow.。. but also causing）
2. not only … but also 連接兩個主語時，謂語動詞要和與其最近的主語保持人稱和數(shù)的一致。例如：
Not only the students but also the teacher was against the plan. / Not only the teacher but also the students were against the plan.
3. not only … but also 不能用在否定句中。例如：
誤： They don’t fear not only hardship but also death.
正： They fear neither hardship nor death.
正： They don’t fear either hardship or death.
4. not only … but also 連接兩個分句，并且 not only 位于句首時，第一個分句中的主語和謂語要部分倒裝。例如：
Not only does the sun give us light， but also it gives us heat.
Not only did he speak English correctly， but he also speaks it fluently.
《新編英語語法》薄冰P633：Not only does he compose music， but he also play./ Not only does he have to type out the answer on a computer， but he also gets the computer to translate it into sounds.
《新編英語語法》章振邦1005：She was not only compelled to stay at home， but she was also forbidden to see her friends
英語語法大全上的例句是： Not only did they break into his office and steal his books， but they also tore up his manuscripts.
這里附上ring_cheng的觀點：倒裝時可以在短語中插入某類成分，如：not only did sb do sth， but sb also did sth （之所以前后都加入主語，不是為了連接主語，而是為了句子的對仗工整而補足主語，連接的其實是主語的兩個不同的謂語動作。又因為not only在句首已經(jīng)倒裝過了，所以but also用正常語序即可。依然滿足句子平衡的要求）。如大全354中but also被主語+助動詞拆開：
354.In 1978 a national study found that not only had many contractors licensed by a self-policing private guild failed to pass qualifying exams， they in addition falsified their references.
A. they in addition falsified their references
B. they had their references falsified in addition
C. but they had also falsified their references
D. they had also falsified their references
E. but their references were falsified as well （C）
有考which從句和現(xiàn)在分詞修飾比較哪個更適合的題
3.【heatockr】
6） 語法：拉斯維加斯的法律什么的，記得是考president who 。。。。and prime minister who is dominated by。。。。，記得有個選項有whose
7） 一個agreement。。。。選項是動詞忘了，有ing形式，that+動詞。。。。
8）還有一道 although the brain change 隨著年齡好像，scientists are not sure劃線內(nèi)容+什么to reason，我記得選項有of the effect on ，what effect the change on，還有一道選項是 ，a change that ；which。。。。；大概就是考同位語和which的指代