382. in ignorance of 不知道…
383. be ignorant of ( = lacking knowledge) 對…不了解,不知道
384. (an) impact (on) 對…的強烈影響
385. impose…on 把…強加給
386. impress…on 給…留下印象
387. make (leave) an impression on sb. =give sb. an impression 給…留下印象
388.under the impression that有..的印象,認為
389. improve sth.(make sth. better)把原物改進
improve on(=produce or be sth. better than…) 另做一物比原物更好
390. improve in (=get better) 有改進, 好些
391. improvement in 表示原物有改進,好轉(zhuǎn)
392. include…in 把…列在…里面
393. inclusive of 把…包括在內(nèi)
394. independent of 獨立的,不受約束的
395. indicative of 表明, 說明
396. be indifferent to (=not interested in)對…漠不關心, 冷淡, 不在乎
397. (be) inferior to(=less good in quality or value) 比…差; superior to比…好
398. inform sb. of sth. 通知, 告訴
399. be innocent of 無罪的,無辜的
400. insist on (=order sth. to happen) 堅持要
401. instead of (=in place of) 代替，而不是…
402. instruct…in (=teach) 教.指導.訓練某人…
403. insure…for 把…保險(多少錢); ensure 使安全; assure…(of) 使…確信,保證
404. insure…against 保險…以防
405. intend…for 打算把…給
406. (be) intent on 專心致志, 堅決
407. in the interests of 符合…的利益
be interested in 對…感興趣
408. interfere in干涉, interfere with打攪,干擾
409. at intervals 每隔一會兒, 每隔一段距離
410. intervene in 干預
411. invest in 投資
412. be involved in (=become connected or concerned) 卷入, 參加
413. by itself (=alone, without help)單獨地,靠自己
414. in itself 本身; of itself 自發(fā),自然
415. be jealous of 妒忌
416. jump at (=to be eager to accept)搶著接受,
417. jump on (=scold, tell of) 叱責
418. junior to sb. 年紀較…輕, 職位較…低.
419. (be) keen on 喜愛, 渴望
420. keep a close watch on ( =keep a sharp lookout for) 密切注視
