XDF白勇的语法书上有此题
选E 恢复此句正确形式:Because natural gas is composed mostly of methane, a simple hydrocarbon, vehicles powered by natural gas emit less of certain pollutants than those burning gasoline or diesel fuel。 此句属于省略。还原后:Because natural gas is composed mostly of methane, a simple hydrocarbon, vehicles powered by natural gas emit less of certain pollutants than do those(指vehicles)(powered by) burning gasoline or diesel fuel。 do those(指vehicles)(powered by) burning gasoline or diesel fuel此部分再还原:those(指vehicles)(powered by) burning gasoline or diesel fuel emit (**) certain pollutants **指数量,由此可见,less of 修饰的是pollutants的数量,证明了之前很多大虾说的“less of 修饰数量,fewer of修饰pollutants的种类” 希望这个解释有帮助 |