Part 3
What Is an
Effective Sentence
    This is where we learn to see what a good sentence should be like.
What is a good sentence?
A good sentence should have the following qualities:1) unity;2) coherence ;3) conciseness；4) emphasis；5) variety.
Unity(一致性)
A unified sentence expresses a single complete thought. It does not contain ideas that are not closely related, nor does it express a thought that is not complete itself.
e.g: * Du Fu was one of the Greatest poets.
Improved:   Du Fu was o ...