分词和独立主格在句首作状语

分词及独立主格在句首作状语Dec 10, 2018

分词在句首作状语，可用“从句还原法”，还原出状语从句。如果还原出的从句是主动的，就选doing作状语; 如果还原出的从句是被动的，就选done 作状语。注意：分词作状语的前提条件是，逗号前后的逻辑主语相同。分词前常可保留的连词有when, while, once, if 等。

一．分词在句首作状语的结构：

(Conj) Done / Doing…, sb…

例如：

1. Once formed, a bad habit is hard to kick.

= Once it is formed, a bad habit is hard to kick.

2. Hearing the good news, he jumped with joy.

= When he heard the good news, he jumped with joy.

二．独立主格在句首作状语的结构：

Sth done / doing…, sb…

1.The meeting being over, we all went home.

= After the meeting was over, we all went home.

2.My homework done, I went out to play football.

= After my homework was done, I went out to play football.

说明：

其实，这两种独立主格作状语，可以看作分词作状语的特例。特点是，

分词的前边，保留自己的逻辑主语。也就是，逗号前后的逻辑主语不一致。而一般情况下，分词作状语，不保留自己的逻辑主语。也就是，逗号前后的逻辑主语一致。