The public was confused about the government's ambiguous attitude toward this environmental issue. And they decided to launch a protest to the authorities concerned.(民眾對於政府在這個環保議題上模糊的態度感到很困惑，並決定向有關當局發起抗議。)
開始改成分詞構句
第一步，省略一個主詞:
The public was confused about the government's ambiguous attitude toward this environmental issue. And they decided to launch a protest to the authorities concerned.
第二步，改分詞:
The public was confused about the government's ambiguous attitude toward this environmental issue. And theydecideddeciding to launch a protest to the authorities concerned.
第三步，去掉連接詞:
The public was confused about the government's ambiguous attitude toward this environmental issue. And theydecideddeciding to launch a protest to the authorities concerned.
最後變成:
The public was confused about the government's ambiguous attitude toward this environmental issue, deciding to launch a protest to the authorities concerned.
這樣，你就寫出了一個分詞構句。
而且文章的首句很適合用分詞構句開頭
比如說:
Overwhelmed by the schoolwork, I always go to the movies in my leisure time to briefly escape from reality.
這個例句的原句是: I am overwhelmed by the schoolwork so I always go to the movies in my leisure time to briefly esccape from the reality.
而我用分詞構句，同時簡化了句子的結構，也表達了我總是在「閒暇時看電影」的「條件」。
以下擷取自111學年度學測佳作(原卷一/原卷二)的開頭，都使用了分詞構句來做開頭。
題目是選公園(大家可以自己看看題目)。
1. Seeing from two pictures, we can discover the different features these two parks have.
2.Leading a life in this fast-paced society, we all require some forms of recreation, and thus parks are established to meet our demand for leisure activity and greenery.
當然，不是只有開頭首句才適合，比如同一篇佳作裡作者也再次使用了分詞構句：Strolling on the pathway in this park, I can relish the captivating beauty of nature with gentle breeze blowing on me.
【句式二】 — 關係代名詞子句
關係代名詞(關代)是非常非常重要的文法。
由於關代的文法太多了，不適合放在這篇說，所以這裡我想著重講一個點。
那就是：
用關係代名詞which來代替前面所講的一件事。
這個文法非常好用，可以讓句子看起來更精煉。
用這個句子來舉例：
This policy that indirectly allows the wealthy to bear less tax provoked peoples’ anger, and therefore they went on strike to express their disapproval.(這個間接使富人負擔較少稅務的政策激起了民眾的憤怒，因而他們罷工以表達他們的反對。)
我們用”which” 來代替「此政策激起了民眾憤怒」這件事。變成：
This policy that indirectly allows the wealthy to bear less tax provoked peoples' anger, which made them go on strike to express their disapproval.
