drug當名詞用： to take drug 吸毒 to use drug 吸毒 to be on drugs = to be ...drugged and robbed. (被下葯） She had drugged his wine. (下毒） 沒看過do drug的說法，可能有問題...
請問句子中為什麼要用knowing,是因為分詞構句嗎? 那如果用parents who knows的句型可以嗎? 感謝 They are able to contact drug dealers without their parents knowing about it.?
...使用動詞，而必須是動名詞。 原句可改寫成 They are able to contact drug dealers without their parents knowing about it. = ...
...如果用一個粗略方法比較，倒是可以說”drugstore”是較”drug store”通行：用google的英語站，分別以該兩個關鍵字，在...20:55 補充： From Wikipedia.org: US drug stores commonly sell not only medicines, but also...