5. worth adj.值得(做某事); 有(做某事)的价值; n.价值; 用处
[典例]
1). The new car cost a lot of money, but it's certainly worth it. 买这辆新汽车花了很多钱, 但确实物有所值。
2). The thieves stole 1 million worth of jewellery. 窃贼偷走了价值100万英镑的珠宝。
[重点用法]
be worth doing sth值得(做某事); 有(做某事)的价值
worth of sth用于表示数量﹑ 持续时间等的名词之后,值某金额的量
[练习] 中译英
1). 这本书值得一读。
_____________________________________________________________________________________
2). 他有十英镑的汽油。
_____________________________________________________________________________________
Keys: 1). The book is worth reading/It's worth reading the book.
2). He has ten pounds' worth of petrol.
4. doubt n.怀疑;不确定; 不信任;v.对……无把握,怀疑
[典例]
1). He is without doubt the cleverest student I've ever taught. 他确实是我所教过的学生中最聪明的。
2). I doubt whether he'll come. 我不敢肯定他来不来。
[重点用法]
There is no doubt about sth./ that ….毫无疑问……
without doubt确定地;无疑地
I don’t doubt that …我肯定……(=I’m sure/certain that…)
I doubt if/whether …我不确定……(=I’m not sure/certain if/whether…)
[练习] 中译英
1). 不知道那是不是他想要的。
_____________________________________________________________________________________
2). 那件事情没有什么可疑之处。
_____________________________________________________________________________________
Keys: 1). I doubt if that was what he wanted.
2). There's not much doubt about it.
3. wonder n.惊奇,奇迹;不知道……(想知道)
[典例]
1). They were filled with wonder at the sight. 他们见此情景惊叹不已。
2). I wonder who he is. 我不知道他究竟是谁。
[重点用法]
wonder +从句“自忖……,自问……,不知道……(想知道)”
wonder +if从句“请问您是否……”(用于礼貌地提出请求)
wonder at对……感到惊奇
[练习] 中译英
1).我也不知道他们能不能准时到。
_____________________________________________________________________________________
2).难怪你来晚了!
_____________________________________________________________________________________
Keys: 1). I wonder whether they will arrive on time.
2). No wonder you were late!
2. consider vt. 考虑;认为
[典例]
1). We are considering going to Canada, ie we may go there. 我们正考虑到加拿大去。
2). We consider this (to be) very important. 我们认为这非常重要。
[重点用法]
consider doing sth./sth.考虑做某事
consider sb./sth. as / to be…
consider it +形容词+ to do sth….认为做某事是……
considering…考虑到……
[练习] 中译英
1). 你是否考虑过如何到达那里?
_____________________________________________________________________________________
2). 他会被认为是个软弱无能的领导人。
_____________________________________________________________________________________
Keys: 1). Have you considered how to get there?
2). He will be considered a weak leader.
1. fancy adj. 不寻常的; 精致的; v. 想; 以为; 想像
[典例]
1). That's a very fancy pair of shoes! 那是一双非常别致的鞋!
2). I fancy (that) it's going to rain today. 我看今天要下雨
[重点用法]
fancy that…以为是…… fancy (sb’s) doing…想像(某人)做某事
fancy oneself 自负;自命不凡 fancy sb. to be / as 想象/认为某人会成为……
[练习] 中译英
1). 她竟如此放肆!
_____________________________________________________________________________________
2). 他以为她喜欢他。
_____________________________________________________________________________________
Keys: 1). Fancy her being so rude!
2). He fancies she likes him.
1.value
n. 价值 |
valuable
adj. 贵重的; 很有价值的 |
valueless adj. 无价值的; 没有用处的 |
2.
survive v. 继续生存或存在 |
survival
n. 存活; 幸存
|
survivor
n. 幸存者 |
3. decorate v. 装饰 |
decoration n. 装饰; 装潢 |
decorative adj. 装饰的;
作装饰用的 |
[练习]用括号内所提供词的适当形式填空 1) The jawbone was our most _________ discovery. (value) 2) They have ordered software to the _______ of 700. (value) 3) He thinks our advice is _________, so he won’t take it. ((value)) 4) Many strange customs have __________ from earlier times. (survive) 5) This ceremony is a _________ from pre-Christian times. (survive) 6) She is the only ________ in the accident. (survive) 7) When will they finish the ________ of the bathroom? (decorate) 8) The building was _________ with flags. (decorate) 9). The coloured lights are very _________. (decorate) Keys: 1) valuable 2) value 3) valueless 4) survived 5) survival 6) survivor 7) decoration 8) decorated 9). decorative |
17.在相同时间内单摆甲做了10次全振动,单摆乙做了6次全振动,两个单摆的摆长之差为16cm,试求两摆的摆长各是多大?
*18.将一摆长为L的单摆放置在升降机内,当升降机各以大小为a的加速度加速上升、减速上升时,单摆的周期各为多大?
16.一个秒摆(T=2s),摆球质量m=20g,振动中最大摆角α=5°.求:
(1) 振幅; (2)振动中最大势能(平衡位置为零势能处);
(3) 振动中最大速度; (4)回复力最小时线上的拉力.
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com