助动词和情态动词改错问题1They should (use) coal,but they had to use oil instead,because there remained little coal.括号里的是错的.为什么说should have used,而不说could use呢?说should have used的话是说“应该用了”,
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/09 18:36:22
x]oA\jxQۤMh~M A xPJE]K
E.զ#lؐ^y73s#Y%o*4_zN\1uS?szv&ͨQ8ĥPVCEҒ"(X"JD
aANZEiKiZ\+gb5_cJ'3