It is more difficult to write simply,directly,and effectively than to employ flowery but vague expressions that only obs

问题描述:

It is more difficult to write simply,directly,and effectively than to employ flowery but vague expressions that only obscure one’s meaning.

我觉得:
it 做形式主语,真正主语是to write simply,directly直到meaning.在真正主语中,than做连接词,but也做连接词,之后,that引导定语从句修饰expressions.其他应该再没有什么要点了.