stay up、concentrate、concentrate on、study、design明天

stay up、concentrate、concentrate on、study、design明天
老师让我讲这几个单词大家帮我想想要怎么讲,把各种变形 用法讲到越详细越好,

等 ,一会儿给你. 再答： 1，stay up 不睡觉，熬夜

举例；
Don't stay up too late.
不要熬夜熬得太晚。
I can barely stay up to a normal adult hour.
我几乎不能像正常成年人那样熬夜。
stay up late和stay up的区别；
stay up late 睡得很晚 （睡了），
stay up 熬夜不睡（一直都没睡）。
2，concentrate

vi.
集中；浓缩；全神贯注；聚集

vt.
集中；浓缩

n.
浓缩，精选；浓缩液
第三人称单数：concentrates过去式：concentrated过去分词：
concentrated现在分词：concentrating；名词concentration
举例；
I can't concentrate, I need your help.
我不能集中精力，我需要你的帮助。
3，concentrate on 集中精力于

相关用法；
concentrate on sth
concentrate on doing sth
concentrate one's effort on sth/doing sth
举例；
I can't concentrate (on my studies) with all that noise going on. 吵闹声不绝於耳, 我精神无法集中（於学习）.
We must concentrate our efforts on improving education. 我们必须致力於改进教育工作.
Having failed my French exams, I decided to concentrate on science subjects. 我因法语考试不及格而决心专攻理科.
This firm concentrates on the European market. 这公司把工作重点集中在欧洲市场.
再答： 4，study
n. 学习，研究；课题；书房；学问
vt. 学习；考虑；攻读；细察
vi. 研究；用功
复数：studies第三人称单数：studies过去式：studied过去分词：studied现在分词：studying
用法；study for sth 为什么而学习

举例；

1. 学习;研究
For a year he studied Chinese with me.
他跟我学了一年中文。
2. 细看,细察
I studied him closely.
我仔细地看了看他。
3. 仔细考虑
We need time to study a suitable answer.
我们需要时间去考虑一个适当的答复。
They studied the question carefully before they made the decision.
他们认真研究了这一问题,然后才作出决定。
再答： 5，design
vt. 设计；计划；构思
n. 设计；图案
vi. 设计
复数：designs第三人称单数：designs过去式：designed过去分词：designed现在分词：designing
用法；
by design 故意地, 蓄意地
have designs on 对...抱不良企图; 图谋加害于; 企图盗窃(某物)
have designs against 对...抱不良企图; 图谋加害于; 企图盗窃(某物)
举例；
vt. & vi. 设计, 绘制
He has designed all the scenes and costumes.
他设计了所有的布景和服装。
vt. 计划, 筹划
He designs to become a musician.
他立志成为一个音乐家。
I designed going abroad two years ago.
两年前我曾计划要出国。
n. 图样, 设计图
This piece of cloth has a new design.
这块布图案新颖。
设计, 布局
The success of this car shows the importance of good design in helping to sell the product.
这种汽车的成功显示精良的设计对打开销路的重要性。
目的, 打算
His evil designs were frustrated.
他的邪恶企图未能得逞。