e) "The context and declensional particels " .

The title of the fourth chapter in this thesis was " the context and morphological rules" . It contains:

i. " The context and the verb's meaning، the infinitive، and derivatives" .

ii. " The context and the meaning's of morphological patterns "

In this research، we proved that the meaning of morphological patterns is inconstant، and it needs to a continuous research in order to get the new meanings .

iii. " The context and the nunation، and the indefinite " .

The last chapter in thesis is " the context، Sibawayh، and the declensional Theory " . It contains two researches:

A. "The definition of theory's term، and the most important traits of the scientific theary" . We mentioned here that the source of theory's term is the English language . We stated the important meanings of this term in English . We also refered to the meaning of theory's term in the philosophical dictionary . Its definition was "A system of generalized knowledge and explanation of different aspects of reality . ... Theory differs from practice، since it spiritually or mentally reflects and reproduces reality . At the same time it is inseparably linked with practice، which places pressing problem before knowledge and requires it to solve them . For this reason practice is part and parcel of every theory" . We noticed through this definition that the philosophical dictionary associated with reality، and it reflects and reproduces reality .

We also mentiond the relationship between the theory's term and Criterion of Truth's term . This term indicated to importance of " experience of society is capable of fully confirming or completely refuting the ideas engendered by man" .

"The declensional، and contextual theory " . In this research، we criticized the Regent's theory، and demonded that the Arabic declensional theory must depend on the context and its elements.