Ma was published, people in the grammar fields have had a great many of divergences on the classification of Chinese hypothetical conjunctions and the relation types of complex sentences.

Hypothetical complex sentences are a kind of more complicated complex sentence pattern, and the usage of hypothetical conjunctions in Medieval Chinese is complicated too.

When Chinese suppose conjunction developed to the modern Chinese time(late Tang Dynasty-the mid-Qing) have further changed,quantity increased unceasingly,the diplophonia advancement sped up.

This paper aims at describing and explaining the difficulties that Chinese learners encounteredin learning and using English articles in terms of DP hypothesis (determiner phrase hypothesis).