Starfish, with anywhere from five to eight arms, have a strong regenerative ability, and if one arm is lost it quickly replaces it. sometimes by the animal overcompensating and growing an extra one or two.
Starfish, with anywhere from five to eight arms, have a strong regenerative ability, and if one arm is lost it quickly replaces it, sometimes by the animal overcompensating and growing an extra one or two.
(A) one arm is lost it quickly replaces it, sometimes by the animal overcompensating and
(B) one arm is lost it is quickly replaced, with the animal sometimes overcompensating and
(C) they lose one arm they quickly replace it, sometimes by the animal overcompensating,
(D) they lose one arm they are quickly replaced, with the animal sometimes overcompensating,
(E) they lose one arm it is quickly replaced, sometimes with the animal overcompensating,
提供一个GMATCLUB上的解释
use of by is improper in an active voice setting. It should be with the animal rather than by the animal; overcompensating, growing is improper co-ordination. There should be an and in between
"* 关于comma+Ving的补充(详细版):
the ""comma + ing"" modifier should only be used when:
(A)【跟主语的关系,逻辑主语必须一致】不一定是主句主语
it MODIFIES THE ENTIRE ACTION of the preceding clause, and it APPLIES TO THE SUBJECT of that clause;【修饰整个之前的句子,逻辑主语必须是句子的主语】
AND
(B)【跟 main action 的关系--时间上同时从属,或者 关系上 从属】
one of the following is true:
(1) the ""ing"" action is SIMULTANEOUS with, and SUBORDINATE to, the main action;
- i ran down the sidewalk, flapping my arms wildly
(2) the ""ing"" action is a DIRECT AND IMMEDIATE CONSEQUENCE of the main action.
- i got a 100 on the most recent exam, bringing my average up to 91
since COMMA + -ING clauses are automatically attributed to the SUBJECT of the preceding clause, this modifies the moon.
as it clearly should, in context.
also note that it applies not only to that subject, but to the entire action of that clause (this is what makes it ""adverbial"")."