高考英语词汇要求掌握3500个单词，新东方在线高考网小编整理的2017高考英语常用3500个词汇解析之I开头的词汇，供同学们参考学习。

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　　I

　　1.idea n. have some/ no idea + 从句 / of …

　　I have no idea why she left. / I have no idea of his address.

　　2. ◎identity n The police are trying to discover the identity of the  killer.

　　The thief used a false identity. identity card=ID card

　　4.ill adj 1) ill与sick的区别 He was ill/ sick. a sick mother

　　2) = bad have a bad/ an ill effect on…影响不好 speak/ think ill of sb. 说某人的坏话

　　5. ◎illegal / legal adj. It is illegal to drive through a red light.

　　illegally adv. He entered the country illegally.

　　6. imagine v. imagine sth. / doing sth. I can’t imagine life without the children now.

　　I can’t imagine his becoming a teacher.

　　7.◎immediately adv. He answered almost immediately.

　　Turn right immediately after the church.

　　conj. Immediately he had gone,I remembered her name.

　　immediate adj. an immediate reaction / response take immediate action

　　8. ●import 进口，输入 n. the import of electrical goods.

　　v. All the meat is imported from France.

　　9. ◎ impression n. a) get a good / bad impression of sb a general / an overall impression

　　b) My words made no impression on her.

　　His trip to India makes a strong impression on him.

　　c) be under the impression that

　　I was under the impression that the work had already been completed.

　　impress v. impress sb with sth / sb He impressed us with his sincerity.

　　impress sth on / upon sb He impressed on us the need for immediate action.

　　impress sth / itself on / upon sth Her words impressed themselves on my memory.

　　11.in prep.

　　1 in a word一句话说 2 in all 总共

　　3 in modern times 4 be measured in tons 用吨来衡量

　　5 in that… 因为 She was lucky in that she had friends to help her .

　　6 in the eighteenth century/ in the1990s 7 in one’s twenties

　　8 in pencil/ English/ ink用铅笔/英语/墨水 9 pay sth in cash

　　10 The wall is 3meters in height/high. / The rope is 3 meters in length/long.

　　12.include v. Everyone laughed, including me. (me included.)

　　13. increase 1) v. increase to / by 增加到/了

　　2) n Great demands lead to a large increase in supply.

　　increasingly adv. 越来越多的，不断增加的

　　increasingly difficult/ important/ popular

　　15. ◎indicate A red sky at night often indicated fine weather the next day.

　　In his letter, he indicated to us that he was willing to cooperate.

　　indication n. indication of sth / doing sth

　　They gave no indication of how the work should be done .

　　16. ◎ industry n.------ industrial adj. heavy / light industry

　　17. influence n. have a strong… ~ on/ upon sb / sth

　　~over sb / sth His parents no longer have any ~ over her.

　　under the ~ of sb / sth He committed the crime under the ~ of the drugs.

　　Those friends are a bad ~ on her. v. His writings have ~d the lives of millions.