1.Conclusion We believe that LDLT combined with posthepatic IVC reconstruction using cryopreserved vena cava graft is considered to be a sound modality for IVC obstructed BCS.
2.As to dynamic modality, it can always be hypothesized in a conditional protasis, is always subject to tense distinction, and does not shift its orientation under the influence of interrogation.
3.The logic analysis of anti-reality hypothesis compound sentence is to reveal its hidden logic thinking modalities which are different reasoning,counterevidence and figurative reasoning.