2.表示能力的情态动词
can可表示某人具有某种特定技巧、(潜在)能力或通过感官意识到某物。 could表示某人过去具有某种技巧、(潜在)能力或意识。 -Some people can ski better than others. 有些人滑雪比其他人好。
Everyone in the village could hear her voice. 村子里每个人都能听见她的声音。
be able to/be unable to不仅有现在时、过去时,还可有将来时、现在完成时、不定式、动词-ing形式等。例如: Our baby will be able to walk in a few weeks. 我们的婴儿几周后就能走路了。 Since his accident he hasn’t been able to leave the house. 自从事故后,他就不能离开房子了。 3. 表示肯定推测的情态动词
must用于推测时,表示“一定”、“肯定”,表明说话人认为的可能性很大。一般只用于肯定陈述句中。否定形式用can’t,表示“一定不”“肯定不”
如: Oh, you must be Sylvia’s husband. 你一定是西尔薇亚的丈夫。 语法总复习2- - -被动语态
被动语态表示主语是谓语动作的承受者,如:A new swimming pool will be built on our school.
被动语态的形式是由“助动词be+动词的过去分词”构成。助动词be随着主语的人称,数,时态和语气的不同而变化。各种时态的被动语态形式如下:
1.表示可能性的情态动词
may 和might用来推测现在“可能”,may 比might表示的可能性大些。may通常只用于陈述句中。例如: --It may rain tomorrow. 明天可能下雨。
用may 表示“可能”一般不用于疑问句,在疑问句中通常用can表示。例如: --Can they have missed the bus? --Yes, they may have.
他们可能错过了公共汽车吗?是的。
7. proven a. 被证明的
Truth is something proven by experiment, so nothing should be taken for granted. 真理是要被实践证明的,所以没有什么东西可以想当然。
语法快递 it 用法
it的用法
(1)用作人称代词,代替前文提出到的无生命的事物,动植物、婴儿及指示代词this, that,如,
I have a new pen. It is beautiful. 我有一只新钢笔,它很好看。
The Browns have a new baby. It's cute. 布朗一家新生了一个小孩,很可爱。
(2)用来表示时间、天气、距离等,如,
It's twelve o'clock now. 现在12点了。
It's fine today. 今天天气很好。
语法总复习1----情态动词
Teaching aims: Vocabulary revision
Grammar revision
Teaching main-points: Vocabulary and grammar revision in the process of the integration between the teacher and the ss
Teaching Crux: 1) SS’ explanation about the vocabulary and grammar
2) Teacher’s further explanation and supplement
Teaching materials & focuses:
复习情态动词
6. tend to vi. 1. 走向;趋向
Old people tend to get fat.
老年人容易发胖。
He tends towards selfishness.
他有自私自利的倾向。
5. serve as vt. 为...服务;为...服役,侍候(顾客等);供应(饭菜),充当
Children must be educated to serve their country when they grow up.
必须教育孩子长大后为国家服务。
She served me a cup of coffee. 她给我端上一杯咖啡。
The room served as an operation room temporarily. 那间屋子临时充当手术室。
4. survive vt.. 在...之后仍然生存,从...中逃生
Only two passengers survived the air-crash. 这次飞机失事只有两名乘客幸免于死。
vi. 活下来,幸存;残留
Few survived after the flood. 洪水后极少有人生还。
3. root n. (植物的)根; 根;根基;本质
These plants have very deep roots. 这些植物的根长得很深。
This is the root cause of poverty. 这是贫穷的根本原因。
vi.生根 根源在于,来源于
Some plants root easily. 有些植物容易生根成长。
The crime rooted in his greed for money. 这一犯罪行为起因于他对金钱的贪得无厌。
2. in terms of 就...而论;在...方面
In terms of money, he's quite rich, but not in terms of happiness.
就钱来说他很富有,但就幸福来说就不然了。
1. date back to , date from 从。。开始,起源于,上溯到
The Sanxingdui site is said to date back to 5000 years ago.
三星堆遗址据说开始于5000年前。
6. versus prep. (法律和运动用语,常略作v.或vs.)对;对抗
The big match tonight is England versus Spain.
今晚的大赛是英格兰对西班牙。
Robinson versus Brown
鲁宾逊对布朗的诉讼
prep. 与...相对
the problem of mercy versus revenge
饶恕与复仇相抗衡的问题
Unit 20 Archaeology
Teaching aims: Vocabulary revision
Grammar revision
Teaching main-points: Vocabulary and grammar revision in the process of the integration between the teacher and the ss
Teaching Crux: 1) SS’ explanation about the vocabulary and grammar
2) Teacher’s further explanation and supplement
Teaching materials & focuses:
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