Ten kinds of ill sentences: incomplete components, improper word order, improper collocation, unclear meaning, illogical, semantic repetition, mixed sentences, inconsistency, improper negation and redundant components.

The so-called sick sentence is a problematic sentence. Any sentence that violates the law of grammatical structure (grammatical error) or the law of objective things (logical error) is a sick sentence.

Ex.: This kind of trouble has always attracted the attention of the elders.

This annoyance finally caught the attention of the elders.

Lack of relevant vocabulary

Example 1: The stick insects in Singapore not only look almost like bamboo, but also look exactly like branches when they are quiet. (Add "and" before "number")

Exodus 2: The academic conference was short and gained a lot. (Add "although ... but ...")

No matter how good you say, we won't listen.

Exodus 4: Even if the family is large, we should save unnecessary expenses and waste.

Baidu encyclopedia-sick sentences