专题十八 U,V,W,Y字部
1. understand
v.懂得,理解,明白;了解,知道;谅解,体谅
词形变化:过去式understood,过去分词understood
用法:make oneself understood清楚表达自己的意思;understand+ that/wh-从句。例如:
Im not very good at German, but I can make myself understood. 我德语不太好,不过我能说清楚自己的意思。
You don’t need to understand how computers work to be able to use them. 要使用计算机不需要非得搞懂它的工作原理。
词性转换:understanding  adj.了解的额,有理解力的;n.谅解,理解;understandable  adj.可以理解的
反义词:misunderstand  v.误解,误会
(2019,北京卷,阅读CTo a certain degree, we can understand and control our experience of time passing.
2. use
v.&n.利用,使用,应用
关联词组:make (full/good) use of(充分)使用,利用;be in use在使用中;be of use (to sb.)(对某人)有用;for use供使用;easy to use使用方便;It’s no use doing sth.做某事没用
动词用法:常用结构有use sth. as sth.把某物用作……;use sth. to do sth.用某物做某事;use sth. for (doing) sth.为(做)某事使用某物。例如:
My parents use the house as a holiday home. 我父母把这房子用作度假屋。
Most people now use their cars to go shopping. 现在大多数人开车去购物。
They were using animals for scientific tests. 他们用动物做科学实验。
名词用法:
可数名词,表示“用途,用处”。例如:
Robots have many different uses in modern industry. 机器人在现代工业中有多种不同用途。
不可数名词,表示“用,使用”,指用的动作,仅以单数形式出现;其后通常接介词of。例如:
the increasing use of computers in education 电脑在教育领域中越来越多的使用
词性转换:used  adj.二手的,使用过的;习惯的;usable  adj.可用的;useful  adj.有用的,有益的,有帮助的;useless  adj.无用的;usage  n.使用;用法;user  n.用户,使用者
(2019,山东卷,单项填空
20. A recent survey shows that 44 percent of Americans want to use self-driving cars, _________ 34 percent believe that they will make the roads more dangerous.
A. although                      B. because                    C. if
3. usual
adj.通常的,平常的,寻常的
关联词组:as usual像往常一样,照例;usual practice惯例,通常办法
用法:It is usual (for sb./sth.) (to do sth.)(某人)通常(做某事);longer/higher/worse than usual比平时长/高/差。例如:
It is usual to start a speech by thanking everybody for coming. 讲话前先感谢大家光临,这是惯例。
He came home later than usual. 他回家比平时晚了些。
词性转换:usually  adv.通常,经常
近义词:normal  adj.正常的,一般的
(2019,江苏卷阅读表达weigh的用法
I find it very easy to lose myself in my diary when I am away from my usual activities.
4. value
n.价值;益处
关联词组:market value市场价值;economic value经济价值;social value社会价值
用法:
表示“价值”,与“钱”相关,相当于cost;后跟介词of。例如:
to go up/rise/increase in value 升/增值;to go down/fall/drop in value 贬值
表示“重要性,用/益处”,相当于benefit,只作不可数名词;be of great/little value很/没有价值。例如:
His research has been of little practical value. 他的研究没有什么实用价值。
词性转换:valuable adj.有价值的;贵重的;n.贵重物品
(2019,江苏卷,填空
45. The Book of Poetry, the earliest collection of poems, is of great value in Chinese      ▲      (历史).
5. visit
v.&n.参观,游览;访问,拜访,看望
动词用法:visit+某地,表示“参观,游览”;visit+某人,表示“拜访,看望,访问”。例如:
Which cities did you visit in Spain? 你在西班牙去了哪些城市?
Eric went to Seattle to visit his cousins. 埃里克到西雅图去看望他的表兄弟。
名词用法:pay a visit to sb./sth.参观/拜访……。例如:
If you have time, pay a visit to the local museum. 你若有空,参观一下当地的博物馆。
关联单词:visitor  n.访问者;参观者
(2019,北京卷单项填空
10.If you want to visit the Palace Museum, I       tickets for you tomorrow.
A. will book        B. booked        C. have booked        D. was booking
6. voice
n.说话声;嗓音
用法:
特指唱歌的“声音、音质”。例如:
Sophies got a lovely singing voice. 索菲有一副悦耳的歌喉。
表示“说话声,嗓音”;常用搭配如speak in a deep/soft/loud/quiet voice 低沉地说、轻柔地说、大声地说、轻声地说;raise/lower your voice提高/压低嗓门;keep one’s voice down 说话轻一些。例如:
"The police are here," she said in a low voice. “警察在这儿,”她低声说。
还可喻指“意见,呼声”,或“发言权,表达意见的权利”;其后常接in sth.。例如:
Governments need to listen to the voice of people.政府需要倾听民众的呼声。
词性转换:voiceless  adj.无声的;voiced  adj.有声的;浊音的
(2019,江苏卷单项填空
9.Could you speak in a loud voice so that I can hear you _______________?
A. quickly        B. happily        C. slowly            D. clearly
7. wait
v.等(待),等候
关联词组:can’t wait to do sth.迫不及待做某事;wait and see走着瞧;keep sb. waiting让某人等待
用法:
wait接宾语时通常先接for;wait (for sb./sth.) to do sth.等待(……)做某事。例如:
I sat waiting patiently for the party to end. 我耐心地坐着等待聚会结束。
Are you waiting to use the phone? 你在等着用电话吗?
口语中常用wait a minute/second/moment表示“等一下;等等”。例如:
Wait a moment, just let me think. 等一下,让我想想。
(2019,北京卷单项填空
1.Mr. Wang is coming to our school. I can’t wait to see           .
A. her        B. him        C. it        D. them
8. warm
adj.暖和的,温暖的;热情的
用法:
本义与温度相关,可形容事物本事温度适中;可形容身体感到温暖;可形容衣服或建筑物保暖、防寒;常和keep/stay搭配使用。例如: