第四, 同位语从句。 Eg: It is an undeniable fact that environmental pollution becomes increasingly serious.0 _7 [1 P0 _3 v
环境污染变得越来越严重是不可否认的事实。0 z4 W" d Z7 I; e/ N |
Eg: No one can deny the basic fact that it is impossible for average workers to master those high-technology skills easily.: X. e0 `) k" Y9 i; J( |2 T. e" m, {
没有人能否认这一基本事实:对于一般工人来讲,轻松掌握这些技术是不可能的。