獨立主格結(jié)構(gòu)作原因狀語例句： The boy leading the way, we had no trouble finding the strange cave. 由那個男孩帶路，我們很容易就找到了那奇怪的洞。 There being no further business to discuss, we all went home. 沒有別的事可討論，我們都回家了。