精简状语从句（主语一致）

主语一致 => 主语省略

0. 构造两个主语一致的简单句
1. 选定其中一句话做状语
2. 省略作状语的句子主语
3. 被省略的主语后的动词变成 v+ing（如果是being可以省略）

e.g. 做完家庭作业，我就回家了。

---	从句	主句
简单句（相同主语）	I had finished my homework.	I went home.
状语从句（5.5—6）	After I had finished my homework,	I went home.
简化为介词短语作状语	After having finished my homework,	I went home.
精简后的分词从句	Having finished my home work,	I went home.

e.g. 实际在文章中的运用

简单句	复杂句
He was dressed up as Father Christmas. He was accompanied by six pretty girls. He set off down the Main Street of the city. He rode a baby elephant called Jumbo.	(Being) Dressed up as Father Christmas and (being) accompanied by six pretty girls, he set off down the main street of the city riding a baby elephant called Jumbo.

As town gradually expanded, water was brought from increasingly remote sources, leading to sophisticated engineering efforts such as dams and aqueducts.

By the mid-1960s, the situation took an alarming turn with the outbreak of four more new pests, necessitating pesticide spraying to such an extent that 50% of the financial outlay on cotton production was accounted for by pesticides.

(Being) Impressed by the element’s combustibility, several 17th century chemists used it to manufacture fire lighting devices, but the results were dangerously.

非谓语动词表示被动

原因状语从句

Because 先哭还是先被打不明

从句	主句
Because the boy was beaten by a girl,	the boy cried.
Because being beaten by a girl,	the boy cried.
Beaten by a girl,	the boy cried.

从句	主句
I was very thirsty.	I drank up all the water in the bottle.
Because I was very thirsty,	I drank up all the water in the bottle.
(Being) Very thirsty,	I drank up all the water in the bottle.

从句	主句
I was sick.	I stayed at home.
Because I was sick,	I stayed at home.
Being sick,	I stayed at home.

时间状语从句

After 先被打后哭

从句	主句
After the boy had been beaten by a girl,	the boy cried.
After having been beaten by a girl,	the boy cried.
Having been beaten by a girl,	the boy cried.

While 边被打边哭

从句	主句
While the boy was being beate by a girl,	the boy cried.
While being being beaten by a girl,	the boy cried.
Being beaten by a girl,	the boy cried.

从句	主句
I was asked to cheat.	I refused.
When I was asked to cheat,	I refused.
(Being) Asked to cheat,	I refused.

从句	主句
I looked around.	I realized with a shock that…
When I looked around,	I realized with a shock that…
Looking around,	I realized with a shock that…

从句	主句
They were very excited.	They dug a hole two feet deep.
(Being) Very excited,	they dug a hole two feet deep.