2、_______, I stretched my hand out for it.A. I saw the book I wanted on the shell B. The book I wanted was on the shellC. Seeing the book lying across the desk D. Lying on the desk分析：分词作状语时，其逻辑主语应与句子的主语一致。根据这一原则，可知句子的主语I只能与see保持一致。 如果选A, 该句中没有连词，没能构成并列句和主从复合句，此时要选用
3、非谓语动词形式。所以选C2, Seen from the hill, the park looks very beautiful.分析：“Seen from the hill” 是过去分词作状语。分词作状语时，其逻辑主语应与句子的主语一致。根据这一原则，可知，“the park”是“Seen from the hill”的逻辑主语，它们之间表示被动关系，所以分词形式用seen.二．确立句子主语可能是谁确立句子主语可能是谁时，仍然遵循分词作状语时其逻辑主语与主句主语应保持一致的原则。反过来要根据分词形式确立句子主语。例：Having bee
4、n attacked by terrorists, _________.A. doctors came to their rescue B. the tall building collapsedC. an emergency measure was taken D. warning were given to tourists分析: 本题仍考查非谓语动词的用法。句中“Having been attacked by terrorists”是现在分词作状语。分词作状语时，其逻辑主语应与句子的主语一致。根据这一原则，
5、可知“受攻击”的应是“the tall building”, 即“Having been attacked”的逻辑主语是“the tall building”.句意为“大楼因为受到恐怖分子的袭击而倒塌”. 答案: B三．独立主格结构分词作状语时其逻辑主语与主句主语应保持一致，但当分词逻辑主语与主语不一致时，分词要有自己独立的逻辑主语，这种主语常常是名词或代词，置于动词-ing形式或动词-ed形式之前。这种名词/代词+动词-ing/动词-ed结构在语法上被称为独立主格结构。此时分词形式的选择取决于名词/代词与v-ing/v-ed形式所表示动
6、作的逻辑关系，如果它们之间表示主动或分词动作正在进行，选择现在分词，如果它们之间表示被动或完成，选择过去分词。1, 名词/代词+动词-ing例：Spring coming on, the trees turned green.2，名词/代词+动词-ed 例：The question settled, they felt released. 3，with/without+名词/代词+动词-ing/-ed例：With the tree grown tall, we get more shade.Our school looks beautif
7、ul with the flowers coming out.The battle was over without a shot being fired.四．分词作状语时，相当于一个状语从句。例：______weight, the doctor has warned me to keep off sugar.A. I’m putting on B. Having put on C. As I’m gaining D. To gain分析：在并列句和主从复合句中, 逗号只起分隔作用, 前后两部分的逻辑关系必须使用连接
