The theory 主语
(that/whic) he advanced定语从句修饰先行词the theory
has proved a challenge系表结构用作谓语.
to many traditional concepts介词短语用作状语
.
The theory 主语
(that/whic) he advanced定语从句修饰先行词the theory
has proved a challenge系表结构用作谓语.
to many traditional concepts介词短语用作状语
.