單數/復數名詞傻傻分不清楚?3種不規則型態一次搞懂! 2015-07-222015-07-29 全民學英文編輯部 英文字彙 Leave a comment 1.Economics is/are very important. 2.The children is/ar […] Irregular plural nouns, Irregular singular nouns, Irregular unchanging nouns