過去分詞作狀語：過去分詞作狀語時，說明動作發生的背景或情況，其等同于一個狀語從句。vt 過去分詞作狀語時與主句主語構成被動關系，表示被動和完成，vi 過去分詞表示狀態或動作的完成。
Heated , water changes into steam .
The professor came in, followed by a group of young people .
1 作原因狀語，等于as / since / because 引導從句
Moved by what she said ,we couldn’t help crying . = ( As we are moved by what she said …
2 作時間狀語，等于when 引導時間從句，如果分詞表示的'動作與謂語的動作同時發生，可在分詞前加when/ while / until 等使時間意義更明確。
When heated , water can be changed into steam .
Seen from the hill ,the park looks very beautiful .= ( When the park is seen from the hill…
3 作條件狀語等于 if / whether 引導從句
Given more attention , the cabbages could have grown better .= ( If they have been given more attention ….
Compared with you , we still have a long way to go = ( If we are compared with you …
4 作方式或伴隨狀語
The actress came in , followed by her fans .
She sat by the window , lost in thought .
5 作讓步狀語
Much tired ,he still kept on working .=(Although he was tired ,) he ….
6 獨立主格結構： 當分詞的邏輯主語不是主句主語時，分詞可以有自己獨立的邏輯主語，這種結構稱為獨立主格結構。常用來表示伴隨情況。
The boy rushed into the classroom , his face covered with sweat .
All things considered ,your article is of great value than hers .
Rewrite with proper conjunctions
Example : United we stand, divided we fall.
If we are united, we will stand, but if we are divided,we will fall.
1 Asked what had happened, he told us about it.
→When he was asked what had happened, …
2 Well known for his expert advice, he received many invitations to give lectures.
→Because he was well known for his expert advice, …
3 Given more time, we would be able to do the work much better.
If we were given more time,