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Abstract. For recently years, many scholars analyze English situation comedy from the aspects of sociology, literature, art, music, translation and so on. Analysis of situation comedy from the perspective of linguistics may help audience appreciate situation comedy through a more scientific and reasonable view, and it may also help audience and English learners better understand situation comedy. This paper tries to use Grice's cooperative principle with its quantity maxim, quality maxim, manner maxim and relation maxim to analyze how the humor comes into being in American situation comedy Two Broke Girls. This paper aims at giving a better understanding of humor and helping audience to enjoy and realize situation comedy from a linguistic view.

Two new benzophenone glycosides, hypersens A and B, along with four known compounds, (S)-(+)-5,7-dihydroxy-2-(1-methylpropyl) chromone (3), 5,7-dihydroxy-2-isopropylchromone (4), urachromone B (5), and 3-8′′ bisapigenin (6), were isolated from Hypericum seniawinii. The structures of new compounds (1 and 2) were elucidated according to comprehensive spectroscopic data analyses. The absolute configurations of 1 and 2 were determined by electronic circular dichroism (ECD) calculations. All isolated compounds were evaluated for their neuroprotective effect using corticosterone-induced PC12 cell injury. In addition, compounds 1–6 were evaluated for their anti-inflammatory activity in lipopolysaccharide-induced RAW 264.7 cells. Compound 6 was a biflavonoid and significantly inhibited the production of nitric oxide with an IC50 value of 11.48 ± 1.23 μM.