小處at，大處in

　　例：Li and I arrived at Heishan county safe and sound， all is well. Dont worry. 李和我平安地到達黑山縣，一切很好，勿念。

　　I live in a great city ， my sister lives at a small town while my parents live at a village. 我住在大城市，我姐姐住在一個小城鎮，而我的父母則住在農村。

　　Im in Liaoning， at Anshan. 我住在遼寧省鞍山市。

　　有形with無形by，語言 、單位、材料in

　　例：The workers are paving a road with stone. 工人們正用石子鋪路。

　　The teacher is correcting the paper with a new pen. 這位教師正用一支新筆批改論文。

　　Taking Tiger Mountain by Strategy is a good opera. 《智取威虎山》是-出好戲。

　　The product is separated by distilation into gasoline and gas oil. 這種產品是用蒸餾分離出氣油和粗柴油。

　　I really cant express my idea in English freely in-deed. 我確實不能用英語流利地表達我的思想。

　　I wrote a novel in Russian. 我用俄語寫了一本小說。

　　The kilometer is the biggest unit of length in the metric system. 公里是米制中最長的長度單位。

　　The length is measured in meter， kilometre， and centimetre. 長度是以米、公里、厘米為單位來計算的。

　　This board was cast in bronze not in gold. 這個牌匾是銅鑄的，不是金鑄的。

　　特征、方面與方式、心情、成語慣用in

　　特征或狀態：

　　例： The Democratic Party was then in power. 那時民主黨執政。

　　They found the patient in a coma. 他們發現病人處于昏迷狀態。

　　He has not been in good health for some years. 他幾年來身體一直不好。

　　Many who came in despair went away in hope. 許多人帶著絕望情緒而來，卻滿懷希望而去。

　　The house was in ruins. 這房屋成了廢墟。

　　The poor girl was in tears. 這個貧苦女孩淚流滿面。

　　Her clothes were in rags. 她的衣跟穿破了。

　　His shoes were in holes. 他的鞋穿出窟窿了。

　　I only said it in fun. 我說這話只是開玩笑的。

　　She spoke in grief rather than in anger. 與其說她講得很氣憤，不如說她講得很傷心。

　　小處at，大處in

　　例：Li and I arrived at Heishan county safe and sound， all is well. Dont worry. 李和我平安地到達黑山縣，一切很好，勿念。

　　I live in a great city ， my sister lives at a small town while my parents live at a village. 我住在大城市，我姐姐住在一個小城鎮，而我的父母則住在農村。

　　Im in Liaoning， at Anshan. 我住在遼寧省鞍山市。

　　有形with無形by，語言 、單位、材料in

　　例：The workers are paving a road with stone. 工人們正用石子鋪路。

　　The teacher is correcting the paper with a new pen. 這位教師正用一支新筆批改論文。

　　Taking Tiger Mountain by Strategy is a good opera. 《智取威虎山》是-出好戲。

　　The product is separated by distilation into gasoline and gas oil. 這種產品是用蒸餾分離出氣油和粗柴油。

　　I really cant express my idea in English freely in-deed. 我確實不能用英語流利地表達我的思想。

　　I wrote a novel in Russian. 我用俄語寫了一本小說。

　　The kilometer is the biggest unit of length in the metric system. 公里是米制中最長的長度單位。

　　The length is measured in meter， kilometre， and centimetre. 長度是以米、公里、厘米為單位來計算的。

　　This board was cast in bronze not in gold. 這個牌匾是銅鑄的，不是金鑄的。

　　特征、方面與方式、心情、成語慣用in

　　特征或狀態：

　　例： The Democratic Party was then in power. 那時民主黨執政。

　　They found the patient in a coma. 他們發現病人處于昏迷狀態。

　　He has not been in good health for some years. 他幾年來身體一直不好。

　　Many who came in despair went away in hope. 許多人帶著絕望情緒而來，卻滿懷希望而去。

　　The house was in ruins. 這房屋成了廢墟。

　　The poor girl was in tears. 這個貧苦女孩淚流滿面。

　　Her clothes were in rags. 她的衣跟穿破了。

　　His shoes were in holes. 他的鞋穿出窟窿了。

　　I only said it in fun. 我說這話只是開玩笑的。

　　She spoke in grief rather than in anger. 與其說她講得很氣憤，不如說她講得很傷心。