When you refer back to indefinite pronouns, you use pluralpronouns or possessives, and a plural verb. 但指代不定代詞的需用復數代詞，物主代詞及復數動(dòng)詞。
The common feature of many solutions on systems of linear indefinite equations in the present literature was irregular and its calculated process is complex. 摘要目前的文獻資料中關(guān)于整系數線(xiàn)性不定方程組的解法很多，這些方法的一個(gè)共同特點(diǎn)是沒(méi)有規律性且計算過(guò)程復雜。
