内容正文:
Unit 8 Green Earth
Part 1 Warming Up & Listening and Speaking
教材解析
1.The number of some wild animals is dropping.
一些野生动物的数量正在下降。
辨析: the number of 和a number of
(1)意思不同。a number of表示 “许多”,相当many; the number of表示 “……的数量”。
(2)中心词不同。a number of+名词作主语时中心词是名词; the number of+名词作主语时中心词是number。
(3)谓语动词不同。a number of谓语动词用复数; the number of谓语动词用单数。
The number of the students in our class is 53. 我们班学生的人数是53。
A large number of people are going abroad to study. 很多人打算出国学习。
A small number of children are educated at home. 有少部分儿童在家接受教育。
巩固练习
选择题。
( ) (1) The number of the students in our school about 3,000 and a number of them from the countryside.
A. is; is B. is; are C. are; is D. was; were
( ) (2)—What the number of the students in your school?
—About two thousand. A number of them from England.
A. is; are B. is; is C. are; is D. are; are
( ) (3)It’s reported that a large number of people been killed in the earthquake and the number added up to nearly 70,000.
A. has; has B. have; have C. has; have D. have; has
2. It also affects other wild animals. 它也影响其他野生动物。
辨析:affect, influence, impact, effect
affect v. 影响, 直接跟宾语, affect sth. 对……有影响,且通常指不利的影响。
influence n.&v. 主要指对行为、性格、观点等产生间接的或潜移默化的影响。
impact n.&v. 侧重对某物有强烈影响。
effect n. “影响”,侧重影响的结果。
搭配短语: have an effect on sth.=have an influence on sth.对……有影响
注意: effort n. 努力。
常见短语有:make great efforts尽最大努力; make an effort to do sth.努力做某事; make no effort不努力; spare no efforts to do sth.不遗余力去做某事; without effort轻而易举地。
Sandstorms sometimes affect Beijing. 沙尘暴有时会影响北京。
Watching TV for a long time will have a bad effect on your eyes.
长时间看电视会对你的眼睛有伤害。
It’s all too easy to be influenced by our parents. 我们容易受父母的影响。
Everything you say and do is having a great impact on others.
你的一言一行都会对别人产生很大影响。
He is strong enough to lift the heavy box without effort.
他身体很强壮,可以轻易地提起那个重箱子。
巩固练习
选择题。
( ) (1) The cellphone has a great on teenag