From the bark of the paper birch tree the Menomini crafted a canoe about twenty feet long and two feet wide, with small ribs and rails of cedar, which could carry four persons or eight hundred pounds of baggage so light that a person could easily portage it around impeding rapids.
一、which引导非限制性定语从句 主句SVO,关系代词————这个关系代词一定紧挨指代其前面的宾语O。 Visitors to the park have often looked up into the leafy canopy and seen moneys sleeping on the branches, whose arms and legs have hung like socks on a clothesline.
二、句末分词 分词可以跳过介词短语修饰 In terms of physics, the characteristic feature of the roller coaster is that the potential energy of the cars, gained as a chain drive lifts them through the earth’s gravity to the top of the first drop, has been converted to kinetic energy by the time the ride ends.
BY解析:-ed分词gained跳过介词短语of the cars修饰potential energy