Unit10 I've had this bike for three years教案教学设计2
Unit10 I've had this bike for three years教案教学设计2第1页

Unit 10 I've had this bike for three years.

词句精讲精练

词汇精讲

1. for/since

(1) for与表示一段时间的词连用,表示"做某事多长时间了",常用于现在完成时,表示从过去某时开始,持续到现在的动作或状态。for所在句子中的动词是延续性动词。例如:

I've lived in China for two years. 我住在中国两年了。

I've known him for more than twenty years. 我认识他20多年了。

(2) since作连词,引导时间状语从句,从句用一般过去时,主句常用完成时。例如:

I have studied English since I came here. 自从我来这里就学习英语。

I have known her since I was five years old. 自从我五岁就认识她。

since还可以作介词,连接一个过去的时间点或一段时间+ago。例如:

She has been ill since last weekend. 她自从上周末就病了。

She has been in Wuhan since four years ago. 自从四年前她就在武汉。

2. maker

maker是名词,意为"生产者;制造者",是由"动词make + 后缀-r"构成的。英语中,表示职业或身份的名词小结:

(1) 以-ist结尾的有:

pianist钢琴家 chemist化学家 violinist小提琴家

physicist物理学家 scientist科学家

(2) 以-er,-r或-or结尾的有:

teacher教师 painter画家 writer作家 singer歌唱家 visitor参观者

actor演员 engineer工程师 inventor发明家 professor教授 reporter记者

(3) 以-man结尾的有:

postman邮递员 policeman警察 businessman商人 spaceman宇航员

fisherman渔夫 dustman清洁工

(4) 以-ian结尾的有:

musician音乐家 politician政治家

3. certain

certain作形容词,意为"某种;某事;某人"。例如:

He decided to sell his certain books. 他决定卖掉他的某些书籍。

【拓展】certain作形容词,意为"确定的;无疑的",相当于sure,对应的副词为certainly。certain常用于以下结构中:

be certain / sure of sth. 对某事有把握

be certain / sure to do sth. 肯定做某事

be certain / sure + that从句 确信...... 例如:

They are certain / sure of success. 他们有把握成功。

I'm certain / sure that he will come. 我确信他会成功的。

4. a 46-year-old husband and father

46-year-old是复合形容词,这种形容词有两个特点:一是词与词之间要用连字符连接;二是数词之后的名词用单数形式。例如:

a three-meter-long line一条三米长的绳子

【拓展】