又一个语法考点的总结（现在分词伴随状语的正反向考法）

LES

以下是引用dxwei2008在2004-4-30 17:21:00的发言：

She is sitting on the tree and reading a book. (一般语法)

She is sitting on the tree, reading a book.(GMAT语法)

－这个简单的例子让偶豁然明白了，原来只是像小和尚念经一样记住分词短语在句末可以表示伴随动作，确没有这个简单的例子来得明了，印象深刻！

来一个实际中的例子，新东方补充教材新版本204题：

Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.

(A) merging the nuclei of atoms and not splitting them apart, as in nuclear reactors

(B) merging the nuclei of atoms instead of splitting them apart, like nuclear reactors

(C) merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do

(D) and merges the nuclei of atoms but does not split them apart, as is done in unclear reactors

(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart

很明显，is这个动作和merge这个动作不可能是同时发生的，也不可能是前一个句子的整体导致后面动作的发生，所以使用merge就错了。大家可以注意到，ABC三个选项都在引诱你使用伴随状语，这就是ETS的险恶用心。所以答案必须在DE中筛选。

－这个例子举得也很经典！

楼主的东东都好经典Lei，贪心地说希望多多这样的好东东！

p.s. 强烈支持楼主的头像里的标语，不过自私地想问楼主可不可以让它不要动呀, 因为每次看楼主的好东东时总被它搞的分心，眼睛也有点痛通。

LES

谢谢楼主的体恤！

LES

以下是引用dancingforum在2004-5-1 3:01:00的发言：

Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.

(A) merging the nuclei of atoms and not splitting them apart, as in nuclear reactors

(B) merging the nuclei of atoms instead of splitting them apart, like nuclear reactors

(C) merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do

(D) and merges the nuclei of atoms but does not split them apart, as is done in unclear reactors

(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart

很明显，is这个动作和merge这个动作不可能是同时发生的，也不可能是前一个句子的整体导致后面动作的发生，所以使用merge就错了。大家可以注意到，ABC三个选项都在引诱你使用伴随状语，这就是ETS的险恶用心。所以答案必须在DE中筛选。

正确选项是E。

又想不通了！nuclear fusion: 核子融合－这是一个过程；atomic reactor:原子反应炉－这是一个设备。用unlike连接的两个部分应对称，这两个东东对称吗？到底对称是什么概念?