2. As they make their way down the river,they have a number of exciting adventures.
随着他们顺河而下，他们经历了许多刺激的冒险。
make one's way (to) 向……前进；前往
They made their way to the forest.
他们前往森林。
make way for 让……通过；给……让路
find one's way (to…)找到(去……)的路
feel one's way 摸索着前进
fight one's way 奋勇前进
force / push one's way 挤(出)路前进
Many houses were pulled down to make way for a square.
许多房屋被拆毁，腾出地方建一个广场。

3. He arrived in New Orleans without a penny in his pocket only to find that there were no boats for South America.
他身无分文地来到新奥尔良，结果发现没有去南美洲的船。
该句中only to find that...是不定式作结果状语，only和不定式搭配作结果状语多指意料之外的结果。
He lifted a stone only to drop it onto his own feet.
他搬起石头却砸了自己的脚。
现在分词也可以作结果状语，但它表示的是由前边的动作自然而然地导致后边的结果。
A big earthquake hit Wenchuan on May 12,2008 causing many deaths.
2008年5月12日汶川发生了大地震，造成了许多伤亡。