C)表示“材料”的介词 介词 说 明 例 句 of 用于成品与材料 The desk is made of wood. 的性质不变时 这桌子是由木材制成的。 2 from 用于成品与材料 Wine is made from grapes. 的性质己变时 酒是由葡萄酿制的。 ①与write, You must write letters in ink. speak,answer 你必须用墨水写信。 3 in 等动词通用； Can you answer it in English? ②做“用”解 你会用英语回答吗？
C) 表示“材料”的介词 介词 说 明 例 句 1 of 用于成品与材料 的性质不变时 The desk is made of wood. 这桌子是由木材制成的。 2 from 用于成品与材料 的性质已变时 Wine is made from grapes. 酒是由葡萄酿制的。 3 in ①与write, speak, answer 等动词通用； ②做“用”解 You must write letters in ink. 你必须用墨水写信。 Can you answer it in English? 你会用英语回答吗？
D)表示“原因、理由”的介词 介词 说 明 例 句 ①表示“外在”的原因 He was ill from overeating.他因吃过多而生病 from ②死因（车祸、受伤） He died from the wound.他因伤而致死。 His father died of cancer.他父亲死于癌症。 ①表示“内在”的原因 You should be ashamed of such conduct.i 2 of 种行为你应以为耻。 ②死因（病、饿、渴） I'm sick of listening to his stories.我厌倦他 的故事。 ①表示“一般的理由” Hangzhou is famous for its beautiful scenery. ②常与famous,noted, 杭州因风景而闻名。 3 for blame,punish,reward He was loved by all for his honesty.他因诚 等词连用，表示“著名、 实而受大家喜爱。 处罚、奖赏等的理由” He was punished for theft.他因偷窃而受处罚
D)表示“原因、理由”的介词 介词 说 明 例 句 1 from ①表示“外在”的原因 ②死因(车祸、受伤) He was ill from overeating. 他因吃过多而生病 了。 He died from the wound. 他因伤而致死。 2 of ①表示“内在”的原因 ②死因(病、饿、渴) His father died of cancer. 他父亲死于癌症。 You should be ashamed of such conduct. 这 种行为你应以为耻。 I’m sick of listening to his stories. 我厌倦他 的故事。 3 for ①表示“一般的理由” ②常与famous, noted, blame, punish, reward 等词连用，表示“著名、 处罚、奖赏等的理由” Hangzhou is famous for its beautiful scenery. 杭州因风景而闻名。 He was loved by all for his honesty. 他因诚 实而受大家喜爱。 He was punished for theft. 他因偷窃而受处罚
E)表示“标准或单位”的介词 介词 说明 例句 ①表示程度、比率、价 He drove at a speed of 60 miles 格、速度 an hour.他以每小时六十英里的 1 at ②作“以、用”解 速度行驶。 ③单价用at He has sold his house at a high 总价用for price.他以高价出售他的房子。 Sugar is sold by the pound. ①表示度量单位 以磅出售。 2 by ②作“以一计” I rent the house by the month. 我以月计租这房子。 ①表示交换 He bought it for ten yuan.他用 ②作“用（多少）钱” 十块钱买下它。 3 for ③buy;pay;sell)sth, I paid ten yuan for the book. for 花了十元买那本书
E) 表示“标准或单位”的介词 介词 说明 例句 1 at ①表示程度、比率、价 格、速度 ②作“以、用”解 ③单价用at 总价用for He drove at a speed of 60 miles an hour. 他以每小时六十英里的 速度行驶。 He has sold his house at a high price. 他以高价出售他的房子。 2 by ①表示度量单位 ②作“以—计” Sugar is sold by the pound. 糖 以磅出售。 I rent the house by the month. 我以月计租这房子。 3 for ①表示交换 ②作“用(多少)钱” ③(buy; pay; sell) sth. for He bought it for ten yuan. 他用 十块钱买下它。 I paid ten yuan for the book. 我 花了十元买那本书