网上很多不完整版的，这版是 完整+勘误 版本哦！不就找不到了！
句子结构: adj + prep +B+ be + A = A + be +adj +prep +B
例5: Among the species of seabirds (that use the windswept cliff of the Atlantic coast of Canada in the summer to mate, lay eggs, and rear their young) are common murres, Atlantic puffins, black-legged kittiwakes, and northern gannets(主语).
句子结构: Among A + be + B = B是A的一部分
例6: Implicit in it is an aesthetic principle as well: (that the medium has certain qualities of beauty and expressiveness with which (sculptors must bring their own aesthetic sensibilities into harmony)).