进步 to make progress

失去联络 to lose track of

保持联络 to keep in touch with

误入歧途 to go astray

养成……的习惯 to make it a rule to; to cultivate the habit

统一中国 to reunify China

光复大陆 to recover the Mainland China

遇到交通阻塞 to be caught in a traffic jam

给……教训 to teach someone a lesson

改过自新 to turn over a new leaf四级考试多长时间

引以为乐 to take delight in

予……以打击 to deal a heavy blow to

予……以威胁 to pose a threat to

取代 to take the place of

预作保留 to make the reservation

使……彻夜未眠 to cost someone a sleepless night

充满喜悦 to be filled with joy

背诵 to learn…by heart

鼓励 to encourage, inspire

产生不同 to make a great difference

犯法 to violate the law

不遗余力 to spare no effort to

a big headache 令人头痛的事情

a fraction of 一部分

a matter of concern 焦点

a series of 一系列，一连串

above all 首先，尤其是

absent from 不在，缺席

abundant in 富于

account for 解释

accuse sb. of sth. 控告

add to 增加(add up to)

after all 毕竟，究竟

agree with 同意

ahead of time / schedule 提前

ahead of 在……之前(ahead of time提前)

all at once 突然，同时

all but 几乎;除了……都

all of a sudden 突然

all over again 再一次，重新

all over 遍及

all right 令人满意的;可以

all the same 仍然，照样的

all the time 一直，始终

angry with sb. at/about sth. 生气，愤怒

anxious about/for 忧虑，担心

anything but 根本不

apart from 除……外(有/无)

appeal to 吸引，申诉，请求

applicable to 适用于

apply to 适用

appropriate for/to 适当，合适