He swam back to the shore as quickly as he could.
as(副词)quickly 修饰谓语。as(连词)he could swim作状语吗,修饰as quickly还是谓语?
刘老师:
He swam back to the shore as quickly as he could.
这是一个很典型的原级比较结构:as + adv. + as +从句。现在分解一下:
(1)He swam back to the shore quickly. 他快速游回河岸。
显然,quickly修饰谓语动词swam,说明游泳的速度。
(2)as quickly as he could (do).像他能够做到的那样快(即:尽可能地快)
第一个as是副词,表示程度。意为“同样地,相同地,一样地,达到…程度”,修饰quickly;第二个as 是从属连词,意为“像...一样”,后跟比较状语从句。