资源简介

(共30张PPT)
Unit 4 Invention
Unit review单元复习
英语沪教版八年级上册
Lead-in
1.气球
2.轮；车轮
3.在中心的
4.虽然；尽管；即使
5.把……固定；把……附（在……上）
6.拉；拽；扯；拖
7.国际的
8. 小路；小径
9. 技巧；技艺
10. 需要；依靠
11. 疑惑；疑问
12. 就个人
13. 说明
14. 益处；优势
15.（飞行器的）翅膀；
Write down the words according to Chinese.
balloon
wheel
central
although
attach
pull
international
path
technique
depend
doubt
personally
statement
benefit
wing
Lead-in
Match the pictures with the corresponding words.
wing
wheel
balloon
3D printer
metal
petrol
话题梳理
功能：
Talk about the history and influence of inventions.
（谈论发明的历史和影响）
Describe the features and functions of inventions.
（描述发明的特性和功能）
Talk about the importance of different inventions.
（谈论不同发明的重要性）
话题： Inventions（发明）
Inventions
话题梳理
Talk about the history and influence of inventions.
Describe the features and functions of inventions.
Talk about the importance of different inventions.
wheel、invention、transport、trade、revolution
attach、function、feature、avoid、benefit、technique
They soon attached wheels to horse-pulled vehicles.
important、better、worse、best、comparable
考点突破
although连词（conj.），用于引导让步状语从句，表示 “尽管；虽然”，体现主从句之间的转折关系。不能跟but 一起用。
考点1
although
Although he is rich, he is unhappy.虽然他很富有，但他并不快乐。
Although she’s young, yet she is very independent.她虽年轻，却很独立。
e.g.
【答案】A
1.________ our soccer team failed in the match, we did our best.
A. Although B. But C. Because D. As
【详解】句意：虽然我们的足球队在比赛中失败了，但我们已经尽力了。
考查连词辨析。Although虽然；But但是；Because因为；As作为。根据前后句句意可知，前后句之间存在让步关系，即虽然足球队失败了，但是已经尽力了，Although可引导让步状语从句。故选A。
考点突破
辨析：a number of；the number of
考点2
A. a number of 意为 “几个；若干”。of后跟复数名词或代词；作主语时，谓语动词用复数形式。常用small/large 修饰number。即：a large number of... 大量的……； a small number of：少量的……
B. the number of 表示“……的数量”，of后跟复数名词或代词；作主语时，谓语动词用第三人称单数形式
A number of people have attended the meeting.有若干人参加了这次会议。
The number of students in our class is 50.我们班学生的数量是50人。
考点突破
take place
考点3
take place 为不及物动词短语，意为“发生；举行”，更侧重强调事件的计划性、规律性或人为安排。
e.g. The meeting will take place next month. 会议将于下个月举行。
happen 也意为“发生”，强调事件的偶然性、随机性或非计划性。
e.g. An accident happened on the highway. 高速公路上发生了一起事故。
【答案】A
1. Our school sports meeting will ________ next week. I will take part in it.
A. take place B. in place C. happen D. happen to
【详解】句意：我们学校的运动会将于下周举行。我会参加的。
考查动词短语。take place发生；in place在适当位置；happen发生；happen to发生在某人身上。根据“Our school sports meeting will”可知是按照计划举行运动会，用动词短语take place。故选A。
考点突破
depend on
考点4
depend v.依赖；依靠
→adj.dependent（依赖的）→ independent（不依赖的→独立的）
→ n. dependence（依靠；依赖）
→adj. dependable可靠的，可信赖的
【短语和句型】
考点突破
depend on表示 “依赖 ；依靠某人 / 某物”；还表示 “取决于某事”。同义表达有：rely on, count on, be dependent on。
depend on + 疑问词（what/how/when等）+ 从句
e.g. The price depends on how many you buy. 价格取决于你购买的数量。
depend on sb. /sth. to do sth. 依靠某人/某物做某事
e.g. You can depend on him to finish the task on time. 你可以指望他按时完成任务。
e.g. Children depend on their parents for food and shelter. 孩子们依赖父母提供食物和住所。
depend on + 名词 / 代词 / 动名词
【答案】A
1. —What are you going to do this summer holiday
—________. If there’s enough time, I may go to Guizhou as a volunteer.
A. It depends B. It doesn’t matter C. Don’t mention it
【详解】句意：——这个暑假你打算做什么？——那要看情况。如果有足够的时间，我可能会去贵州当志愿者。
考查情景交际。It depends.那要看情况；It doesn’t matter.没关系；Don’t mention it.别客气。根据“If there’s enough time, I may go to Guizhou as a volunteer.”可知，说话者对于暑假的计划并不是确定的，而是取决于是否有足够的时间，所以应该用“It depends”来表示“那要看情况”。故选A。
（1）avoid 作及物动词，意为“避免；防止”，其后可跟名词、代词或动词-ing形式作宾语。
考点突破
avoid
考点5
（2）同根词：avoidable adj.可避免的；能预防的
We should avoid rush hours. 我们应该避开高峰时间。
Students must avoid copying others’ homework.学生必须避免抄袭他人作业。
1. The teacher asked the students to avoid ________ too many mistakes in the exam.
A. made B. to make C. have made D. making
考点突破
avoid
考点5
【答案】D
【详解】句意：老师要求学生在考试中避免犯太多错误。
avoid doing sth.是固定短语，表示“避免做某事”，此处表示避免犯太多错误。故选D。
①doubt 作名词，意为“疑惑；疑问”，既作可数名词， 又作不可数名词。其常见搭配如下：
考点突破
doubt
考点6
without doubt 毫无疑问= undoubtedly=beyond doubt
There is no doubt (that).毫无疑问……
e.g. There is no doubt that regular exercise improves physical and mental health. 毫无疑问，定期锻炼能改善身心健康。
doubt 还作动词，意为“怀疑”，其后可接名词、代词或 if/whether/that引导的宾语从句。
考点突破
doubt
考点6
I doubt his words. He may be lying.
我怀疑他的话。他可能在说谎。
I doubt if he has read this article.
我怀疑他是否读过这篇文章。
【答案】 no doubt
1. 毫无疑问，教育不发达的国家将继续贫穷。
There is that countries with undeveloped education will remain poor.
【详解】There is no doubt that“毫无疑问”，固定搭配，故填no；doubt。
原级
比较级
最高级
语法突破
good/well
bad
many/much
little
far
better
worse
more
less
farther
further
best
worst
most
least
furthest
farthest
形容词的比较级和最高级的不规则变化
1. 在表示“和……一样……”时，可用“as + 形容词 + as”结构（形容词要用原形）。
语法突破
原级比较结构和句型
2. 在表示“不如……那样……”时可用“not as(so)... as”。
Early computers were as big as a room.早期的计算机和一间房间一样大。
He is as busy as before. 他还是和以前一样忙。
It isn’t so cold as yesterday. 今天不像昨天那样冷。
He is not so handsome as his brother. 他不像他哥哥那样英俊。
语法突破
3. (not)as many+复数名词+as 和 (not)as much+ 不可数名词+as 表示数量或程度，意为 “和……（不）一样多的……”。
4. 表示倍数，如 一半／两倍／三倍／四倍／…… 等用half/ twice/ three/ four/ times+ as...as... 结构。
I have as many books as you. 我和你拥有一样多的书。
A candle does not produce as much light as a light bulb.蜡烛发出的光不如灯泡多。
We got three times as many people as we expected.来人的数目是我们预期的三倍。
原级比较结构和句型
He will call me as soon as he comes here. 他一来这儿就会给我打电话。
语法突破
5. 其它几个关于as…as的句型：
He began to run as fast as he could. 他尽其所能跑得快。
Please help us as quickly as possible. 请尽可能地帮助我们。
☆as … as one can：尽其所能
☆as … as possible：尽可能
☆as soon as…：一……就……
原级比较结构和句型
【答案】A
1. At the age of 60, Uncle Sam is still as ________ as he used to be.
A. strong B. stronger C. strongest D. the strongest
【详解】句意：在60岁时，山姆叔叔仍然和过去一样强壮。
strong强壮的，原级；stronger强壮的，比较级；strongest强壮的，最高级；the strongest强壮的，最高级。由“as...as”可知，此空用原级，表示“像……一样”。故选A。
Language framework：
Task 1
What is the most important invention in history Why
I think ______ is the most important invention because ______.
It not only ______ but also ______.
Without it, people would ______.
Let’s talk
Example:
I think the wheel is the most important invention because it has changed people’s lives greatly. It not only makes transportation much easier but also helps in building various machines. Without it, people would have great difficulty in moving goods and traveling long distances.
Writing framework：
以 “My Favorite Invention”为题写一篇短文。
Task 2
引出发明：My favorite invention is ______.
发明的历史：It was invented ______ (time) by ______ (inventor).
发明的作用：It can ______. It helps people ______.
个人看法：I think it is important because ______.
Let’s write
Example
My favorite invention is the wheel. It was invented about 6,000 years ago. It can be used to make vehicles like cars and trains. It helps people transport goods and travel faster. I think it is important because without it, international trade would be very difficult.
Summary
1. although的用法
2. 辨析：a number of；the number of
3. take place的用法
4. depend on的用法
5. avoid的用法
6. doubt的用法
7. 形容词的比较级和最高级的不规则变化
8. 原级比较结构和句型
要点回顾
Homework
Review what we learned in this unit.
1
Preview Unit 5 Going on an exchange trip (Reading).
2
Bye-bye!

展开更多......

收起↑