【正文】
氣等可以使原來(lái)在句中應(yīng)重讀的詞失去重音,而原來(lái)不重讀的詞卻又成了重讀的詞。 ? We 39。heard 39。Mary 39。singing ˋupstairs. ? (plain statement of fact) ? We heard Mary singing upstairs. ? (But we didn39。t see her.) ? We heard Mary singing upstairs. ? (But we didn39。t hear John.) ? We heard Mary singing upstairs. ? (But we didn39。t hear Mary talking.) ? We heard Mary singing upstairs. ? (But we didn39。t hear Mary singing downstairs.) ? We heard Mary singing upstairs. ? (Not they heard.)