11. There are several ways to build solid walls using just mud or clay , but the most extensively usedmethod has been the forming of bricks out of mud or clay ,and , after some preliminary air drying or sun drying ,they are laid in the wall in mud mortar.
(A) the forming of bricks out of mud or clay,and , after some preliminary air drying or sun drying , they are laid
(B) forming the mud or clay into bricks , and , after some preliminary air drying or sun drying , to lay them
(C) having bricks formed from mud or clay , and, after some preliminary air drying or sun drying , they were laid
(D) to form the mud or clay into bricks , and , after some preliminary air drying or sun drying , to lay them
(E) that bricks were formed from mud or clay ,which , after some preliminary air drying or sun drying , were laid
他的解释里说:
Th e clearest , most effi cient way to accomplish these two pieces of business is to use a parallel structure. The ways to build in the fi rst clause is narrowed to the single way to form and to lay in the second clause.
为什么会由ways to build 来想到带出平行结构呢,我感觉都没有什么征兆啊,求教各位大牛了!!!