identical 同一的：the same (very)identical menuidentify 識別，鑒別：He identified the coat as his brother’s
　　idle 閑散的，閑置的：idle money
　　ignite 點燃，使燃燒：ignite a stove fire with scraps of paper
　　ignore 不顧，不理，忽視：He who ignores history is doomed to repeat it
　　illuminate 照明，照亮，解釋，啟發(fā)，啟迪：The room was poorly illuminated by one candle
　　illustrate (用圖或例子)說明，闡明：A complicated rule can be illustrated by a simple example
　　immerse 使浸沒：He immersed himself in the pool
　　immune 免除的，豁免的：Nobody is immune from criticism
　　impact 沖擊，撞擊：the impact of light on the eye
　　impair 削弱，減少：The output of produce was impaired by the bad weather
　　impartial 公正的，無偏見的：A judge should be impartial
　　implement 工具，器具，用具：new types of farm implements
　　impose 征(稅)，加(負(fù)擔(dān)，懲罰等)于(on, upon)：impose additional tax on business expansion
　　impulse 推動，驅(qū)動：give an impulse to the development of the friendly relations between the two
　　countries
　　inaccessible 達(dá)不到的：The two rocks at the top of the steep hill is at first sight inaccessible
　　incline 傾斜：The shaft inclines almost thirty degree
　　incorporate 包含，吸收：His book incorporates his earlier essays
　　incur 招致，引起，遭受：incur sb’s displeasure(envy)
　　indignant 憤怒的，憤慨的：The actress was at the columnist’s personal questions
　　indispensable 必不可少的，必需的(to. for)： Oxygen is indispensable to life
　　induce 引誘，勸使：Nothing will induce me to do that
　　infer (根據(jù)已知事實等)推斷，推定(from)：From his grades I inferred that he was a good student
　　ingenious (人,頭腦等)靈巧的，足智多謀的：an ingenious designer
　　initiate 開始，發(fā)起：initiate a conversation
　　innovate 革新，改革，創(chuàng)新(in,on/upon)：innovate on another’s creation
　　inquire 詢問，打聽：He inquired what the weather was likely to be
　　insert 插入，嵌入：In the pause he managed to inquire a question
　　inspire 鼓舞，激起：His speech inspires the crowd
　　instant 緊急的，急迫的，立即的，即刻的：be in instant need of help
　　institute 學(xué)會，協(xié)會，學(xué)院，研究院：an institute for the blind
　　insulate 隔音，使隔絕(以免受到影響)：We are not insulated from the real world the way we were
　　insult 侮辱，辱罵：She insulted him by calling him a coward
　　insure 保險，給。。。保險：Every father should insure his life for the sake of his wife and children
　　intact 完整無缺的，未經(jīng)觸動的，未受損傷的：an intact family
　　integrate 使成一體，使合并(with, into)：integrate traditional Chinese medicine with western
　　medicine
　　interfere 妨礙，沖突(with)：Misty weather interfered with the contact
　　intermittent 間歇的，斷斷續(xù)續(xù)的，周期性的：suffer from intermittent headaches
　　intervene 插入，介入：A week intervenes between Christmas and New Year’s Day
　　intricate 錯綜復(fù)雜的，復(fù)雜精細(xì)的：A detective story usually has an intricate plot
　　invert 使反向，使倒轉(zhuǎn)，使顛倒：The magician inverted the bag to show it was empty
　　irrespective 不考慮的，不顧的(of) ：irrespective of consequences
　　irritate 激怒，使惱怒，使煩躁：be irritated by sb’s insolenceJ