陆晔。bound a. certain or very likely 一定的，很可能的。
be bound to 肯定会。
you’re bound to feel nervous about your interview.
你极有可能对面试感到紧张。
it was bound to happen sooner or later.
这事早晚注定要发生。
constant a. happening all the time or repeatedly 经常（发生）的，不断的。
change is constant.
变化是经常发生的。
her clinic has a constant stream of parents wanting help.
她的诊室不断有家长前来求助。
commit vt. give …to sb. or sth. to take care of 把…托付给。
commit … to memory 记住。
can you commit to memory all the main points of the lecture?
你能记住授课中讲的要点吗？
acquaintance n. knowledge of sb. or
sth. （对某人某事的）了解；认识；相识的人。
make sb’s acquaintance第一次见某人。
h**e a passing/nodding acquaintance with对…知之甚少。
she was a casual acquaintance of my family in paris.
她只是在巴黎和我家人偶尔见过面。
concentrate (on) v. focus attention on 集中注意力， 专心。
mike tried his best to concentrate on his homework.
麦克尽量专心于回家作业。
effective a. working well and
producing the intended result 有效的。
it’s a very effective cure for headache.
它对**头痛非常有效。
route n. way of doing sth. or achieving a particular result; way from one place to another 途径； 路线。
i live on a bus route so i can easily get to work.
我住在一条公共汽车路线旁，因此我可以方便地去上班。
route, course, pass & passage 这几个词都是名词，都有“路”之意。
route 指路线、路程，尤指长距离的旅行路线或固定线路。
what’s the shortest route from london to edinburgh?
从伦敦到爱丁堡的最短路线怎么走？
course 指所经之路或方向。
the ship changed course to **oid the iceberg.
为避开冰山，轮船改变了航向。
pass 指山间隘路、山口。
this pass has witnessed the death of hundreds of soldiers in the past.
过去有数百名士兵葬身于这条关隘中。
passage 指过道、走廊或通道。
he forced a passage through the crowd.
他从人群中挤出了一条通道。
用route, course, pass & passage填空：
1. the plane deviated from its usual
2. there was a very dangerous __in this mountainous area in ancient times.
3. i know not what __others may take; but as for me, give me liberty or give me death!
4. we traced out our___on the map.
5. excuse me, you're blocking the __
enlarge v. make or become larger 扩大，放大；变大。
i heard that exercise causes your heart to enlarge, but i don’t know whether it’s true or not.
我听说运动会心脏扩大，但我不知道是真是假。
vocabulary n. all the words that sb. knows or uses; all the words in a particular language 词汇（量）
it is said that english has one of the largest vocabularies of any language.
据说英语是词汇量最大的语言之一。
idiomatic a. expressing things in a way that sounds natural 合乎语言习惯的。
idiom n. 习语，成语。
she was born in italy but her english is fluent and idiomatic.
她生在意大利，但她的英语却流利地道。
usage n. way in which words are used in a language 惯用法。
the accepted usage 公认的用法。
a machine lasts a long time if it gets a good usage.
一部机器如使用得当可以用很长的时间。
basis n. way things are organized or arranged; facts, ideas, or things from which sth. can be developed （做事的）方法； 基础。
patients are cared for on a “first-come-first-serve” basis.
病人们按照“先到先服务”的方法得到照料。
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