一、重点单词：
1、benefit利益、好处。
短语：be of benefit to 对……有好处；benefit from/by...从……受益，得益于……;be of (much, great)benefit to sb.
=be beneficial to sb.= to one’s advantage对某人有益处； be of no benefit to sb.对某人没有益处； benefit sb/ sth对某人/某物有益； h**e/ get/ receive the benefit of得益于； for the benefit of sb = in the interest of sb为了某人的利益；
用法：①主语是人时意为“受益、得到好处”，benefit常和from 或by 连用。如：
somebody benefit from/ by (doing) something；主语是事物时意为“对……有益”。如：something benefit somebody；
在现在时和过去时的句子中， benefit一般不接反身代词和人称代词作宾语，如不说the teacher's advice benefited john.而多说john benefited from the teacher's advice.
benefit视其含义的具体或抽象，可用作可数名词或不可数名词。
比较：benefit为普通用词，指通过正当手段从物质或精神方面得到的任何好处或利益。它的复数形式benefits意为“救济金”。
interest作“利益”讲时，多用复数形式，既可指集团、群体的利益，又可指个人的利益。interest作不可数名词时，意为“利息”。
profit着重指收益，尤指从物质、钱财等方面获得的利润。
advantage指因某方面占优势或利用某机会以及对方弱点而获得的利益与好处。
配套练习：the book was boring. it wasn’t __to me.
a. benefit b. benefited c. of little benefit d. of much benefit
to make members of a team perform better, the trainer first of all has to know their __and weaknesses.
a. strengths b. benefits c. techniques d. values
he was a much older tennis player but he had the great __of experience.
a. interest b. benefit c. profit d. advantage
we benefit __daily exercise.
a. from b. by c. in d. a and b
2、convenient便利的、方便的。
短语： if it is convenient to you如果你方便的话；be convenient for适宜、适合；be convenient to do something便宜、适宜于做某事；it is convenient to do sth.做某事方便； mutually convenient对双方都方便的；
用法：①convenient有两个意思：一是“时间适合某人”,二是“附近的”。
作“适合某人”解时，其主语是事或物而非人，表示主语具有“适合某人”的特征。作“附近的”解时，常修饰distance等名词。
be convenient的意思是“是合适的”“是方便的”,在以表示事或物的名词作主语时，其后常接介词for或to引起的短语。在动词不定式或that从句作主语时常采用形式主语结构，动词不定式的逻辑主体可由介词for引出。
convenient作“附近的”解时，如用作表语，其后常接介词for；如用作定语修饰distance,须用介词from短语，表示“离…近”。
配套练习：if it is __you today, please post the letter for me on your way home.
a. convenient with b. convenient to c. convenient for d. convenient on
come and see me whenever __
a. you are convenient b. you will be convenient c. it is convenient to you
d. it will be convenient to you
if it is quite __to you, i’ll visit you next tuesday.
a. convenient b. fair c. easy d. comfortable
our new house is very __for me as i can get to the office in five minutes.
a. adaptable b. comfortable c. convenient d. **ailable
3、therefore 因此、所以。
短语：and therefore因此；
用法：①therefore的意思是“因此，为此，所以”,是副词，引导结果、结局或结论，不能误作连词用。
therefore可引出一个独立句，但不能连接两个句子，因此当therefore前没有and等连词时，前面须用分号。
连接副词therefore用于句首时后面无需逗号，若位于句中前面可加也可不加逗号。
therefore也可用于推理，作“故…,由此得出”解。
比较： therefore 是副词，不是连词，“因此、所以”，最正式，常用于数学、逻辑和其它精细的推论中，特用以表示严正的推理。如：
i don’t know much about china, therefore, i can’t advise you about it.
so/ then于是、因此，用于简洁的会话和日常的文体中，推论不必严密。如：i had broken my glasses, so i can’t see anything clearly.
配套练习：progree so far has been very good. _we are sure that the project will be completed on time.
a. however b. otherwise c. therefore d. besides
my name is robert, _most of my friends call me bob for short.
a. then b. therefore c. however d. but
your homework is all right; _you can do it better.
a. but b. while c. however d. therefore
it’s raining hard. _i think we should le**e at once.
a. therefore b. so c. however d. and
4、wherever (conj)无论在（到）**；where 在（往）**。
短语：where necessary 在必要的地方；wherever you go无论你去**；wherever you are无论你在哪儿；无论你。
用法：①wherever 作连词，“无论在**”相当于no matter where引导让步状语从句；作副词，“（究竟）在哪儿”，表示惊讶，引导特殊疑问句。如：
wherever did you go just now? where 引导的地点状语从句兼有抽象条件的含义时，往往放在句首。如：
where there is a will, there is a way有志者事竟成。
wherever用作连词，引导地点状语从句，比where语气强。
wherever还可用作疑问副词，作“(究竟)在哪儿”解。例如：wherever are you taking me?你究竟要把我带到什么地方去？
配套练习：in peace, too, the red cross is expected to send help __there is human suffering.
a. whoever b. however c. whatever d. wherever
the famous scientist grew up __he was born and in 1930 he came to shanghai.
a. when b. whenever c. where d. wherever
the old tower must be s**ed, _the cost.
a. however b. whatever c. whichever d. wherever
i’ll find her, _she is.
a. where b. whatever c. wherever d. however
5、argue争论、争辩。
短语： argue with/ against somebody about/ on/ over something/ argue about something with somebody为某事与某人争辩；argue for/ against (doing) something 辩论赞成(反对)某事； argue sb. into/out of doing sth =persuade sb.
to/not to do sth =persuade sb. into/out of doing sth 说服某人做/不做某事；argue over为…争论；argue to the contrary提出相反的意见；argue with与…争论；argue with the facts否认这些事实；argue about a matter争论某一件事；
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