341. in good time ( =early) 早早地 ( 做完.到达等)

342. for good  ( =for ever)  永远地, 长期地

343. take…for granted  ( =assume to be true)   把…认为理所当然的.

344. be grateful to sb. for sth 因…感谢某人

345. on the ground ( s)  fo  ( =because of)  由于…

346. fall to the ground  ( 计划.希望等) 失败,落空

347. on one’s guard ( against)  谨防, 警惕   ( be)  on guard 站岗

348. guard against  ( =defend, keep safe) 警惕,防止 guard…against 警卫…防止

349. guess at 猜, 估计

350. by guess 靠猜

351. be guilty of 犯有…罪或过失

352. be in the habit of 习惯于

353. break off  ( a habit)  改掉 ( 某种习惯)

354. break sb. of  ( a habit) 使某人改掉 ( 某习惯)

355. get  ( fall)  into the habit of养成了…的习惯

356. come to a halt  ( =stop)  停止; 停住

357. at hand 在手边, 眼前 ( 附近)

358. by hand 用手工 ( 做)

359. hand in glove ( with)  狼狈为奸, 密切合作

360. in hand 1) 在手边 2)  ( =under control) 控制住

361. in the hands of 由…掌握, 控制, 负责

362. live from hand to mouth勉强度日,现挣现吃

363. at the head of 在…的前头

364. head for  ( =move towards)  向…方向前进

365. hear of  ( =know about)  听人说起, 听说过

366. at heart  ( =in reality)  内心里, 实际上

367. in one’s heart  ( of hearts) 内心深处,事实上

368. by heart  ( =by memory)  熟记, 背 ( 诵)

369. to one’s heart’s content 尽情地

370. with all one’s heart全心全意地,真心实意

371. hinder…form ( =stop…from) 阻碍,使……不能做

372. be  ( go)  on holiday 在 ( 去) 度假  go on holiday = go for a holiday

373. be  ( feel)  at home  ( =to be comfortable; not feel worried)  感觉合适,无拘束 ,熟悉

374. be honest in诚实

375. in one’s honor  ( or in honor of) 祝贺,纪念

376. on one’s honor 以某人的名誉担保

377. hope for 希望 ( 某事发生) ,希望有

378. to one’s horror 令某人感到恐惧的是

379. in a hurry  ( =hastily)  匆忙地

380. be identical with ( =exactly alike) 和完全相同

381. be identified with 被视为与…等同

382. in ignorance of 不知道…

383. be ignorant of  (  = lacking knowledge)  对…不了解,不知道

384.  ( an)  impact  ( on)  对…的强烈影响

385. impose…on 把…强加给

386. impress…on 给…留下印象

387. make  ( leave)  an impression on sb. =give sb. an impression 给…留下印象

388.under the impression that有……的印象,认为

389. improve sth. ( make sth. better) 把原物改进  improve on ( =produce or be sth. better than…)  另做一物比原物更好

390. improve in  ( =get better)  有改进, 好些

391. improvement in 表示原物有改进,好转

392. include…in 把…列在…里面

393. inclusive of 把…包括在内

394. independent of 独立的,不受约束的

395. indicative of 表明, 说明

396. be indifferent to  ( =not interested in) 对…漠不关心, 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, 告诉

399. be innocent of 无罪的,无辜的

400. insist on  ( =order sth. to happen)  坚持要

401. instead of  ( =in place of)  代替,而不是…

402. instruct…in  ( =teach)  教.指导.训练某人…

403. insure…for 把…保险 ( 多少钱) ; ensure 使安全; assure… ( of)  使…确信,保证

404. insure…against 保险…以防

405. intend…for 打算把…给

406. ( be)  intent on 专心致志, 坚决

407. in the interests of 符合…的利益  be interested in 对…感兴趣

408. interfere in干涉, interfere with打搅,干扰

409. at intervals 每隔一会儿, 每隔一段距离

410. intervene in 干预

411. invest in 投资

412. be involved in  ( =become connected or concerned)  卷入, 参加

413. by itself  ( =alone, without help) 单独地,靠自己

414. in itself 本身; of itself 自发,自然

415. be jealous of 妒忌

416. jump at  ( =to be eager to accept) 抢着接受,

417. jump on  ( =scold, tell of)  叱责

418. junior to sb. 年纪较…轻, 职位较…低.

419.  ( be)  keen on 喜爱, 渴望

420. keep a close watch on  (  =keep a sharp lookout for)  密切注视

421. keep…to oneself ( =keep secret) 不告诉别人

422. to ( the best of)  one’s knowledge 据…所知

423. at large ( =at liberty, free)  在逃, 逍遥法外  at large ( =in general)  一般来说, 大体上 at large ( =at full length; with details) 详细地

424. lean against  ( 背) 靠着…

425. at least 至少; at most 至多

426. ( not)  in the least 一点 ( 也不) , 丝毫 ( 也不)

427. at one’s leisure 在…有空的时候

428. lend itself/themselves to适合于 ( 某用途)