| In the "a" sentence research present situation, for the "complexity" pattern of diversity and semantically, do not have a more unified interpretation, this study still has many problems to be solved. For the modern Chinese grammar system "is" sentence research, achieved fruitful results, but are analyzed thoroughly and very little. In view of this, this paper attempts to their meaning and usage from the linguistics angle discusses and compares the differences between the two, so clear, so that learners to deepen their understanding, so as to achieve the correct purpose. |