as 與with 都可以構成結構來表示伴隨狀語，as 在此結構中是一個連詞，而with 是一個介詞，因此構成不同的結構來表示伴隨狀語。
區別：結構不同！with 引導的不是句子而是短語
As＋主語＋謂語動詞，主句
With ＋名詞、代詞 ＋介詞、形容詞，副詞，分詞，不定式
隨着產量增長20％，.......
As the production increased by 20 percent， we have had another good harvest year.
With the production up by 20 percent， we have had another good harvest year.
He enjoys listening to music with his eyes closed.
他喜歡閉着眼睛聽音樂。
He came out of the room with his eyes shining.
他走出房間，眼裏閃着亮光。
Don't speak with your mouth full.
嘴裏吃東西時不要講話。
Mother looked at me with tears in her eyes.母親含淚看着我。
with獨立結構的位置可前可後，如：
With a lot of work to do， he felt even busier.
有大量工作要做，他感到更忙了。
With a lot of work done， he felt he would have a good rest.
做完了工作，他感到他要好好休息一下
