人教版九年级全册Unit13We're trying to save the earth!单元复习课课件(共45张PPT)

(共45张PPT)
Unit 13 We’re trying to save the earth!
(Period 7)
单元复习课
What kinds of pollution are there in the picture
What are the causes How can we deal with these problems
话题梳理
话题：Protecting the environment
(保护环境)
功能：Talk about pollution and environmental protection
(谈论环境污染和环境保护问题)
Environment
noise pollution, air pollution, water pollution, land pollution
People throw litter into the river.
There is too much traffic.
Factories are putting waste into the river.
People kill sharks.
People cut down trees.
We are trying to save the earth.
We should help the sharks.
Stop riding in cars.
Recycle books and paper.
Turn off the light when leaving the room.
Do not use the plastic bags/paper napkins.
Play a part in protecting the earth.
话题梳理
Pollution
(污染问题)
Causes
(污染原因)
Solutions
(解决方案)
①It’s sunny. Let’s go sightseeing _______ watching TV in the hotel.
A．thanks to B．instead of C．as well as D．instead
②凯特决定去社区工作，而不是度假。
Instead of ______ ____ _______, Kate decided to work in the community.
③Li Lei didn’t play computer games last weekend. _______, he worked as a volunteer in an old people’s home.
A．Instead B．Certainly C．Though D．Gradually
going on holiday
考点突破
1．instead of
taking a vacation
知识复现
（1）instead of 是短语介词，意为“代替；而不是”，其后常跟名词、代词或动词-ing 形式作宾语。
（2）instead 是副词，意为“代替；反而；相反”，常位于句末；位于句首时，其后有逗号。
考点突破
1．instead of
2．cost
①—How much does the car _______
—Oh, that’s not too dear. It’s only 100,000 yuan.
A．spend B．cost C．take D．pay
②—Wow, your sweater is very beautiful! How much is it
—Thank you. It _______ me 30 dollars.
A．spend B．paid C．cost D．take
考点突破
③—The T-shirt looks nice on you! How much did it ______
—I just ______ ten dollars for it.
A．spend; took B．cost; paid
C．take; cost D．pay; spend
考点突破
2．cost
知识复现
辨析：cost、spend、pay 与 take
考点突破
2．cost
单词 主语 常用搭配
cost 物 sth. cost(s) (sb.)+金钱
spend 人 ①sb. spend(s)+时间/金钱+on sth.
②sb. spend(s)+时间/金钱+doing sth.
pay 人 ①sb. pay(s)+金钱+for sth.
②sb. pay(s) for sth.
take it It takes sb.+时间+ to do sth.
①—The teenagers clean up the city park every Saturday.
—Sometimes small things can make a _______.
A．promise B．conversation C．difference D．discussion
②Inventions usually _______ to people’s lives.
A．make a different B．make a big difference
C．make difference D．make different
考点突破
3．make a difference
③这次事故对他产生了重大影响。
The accident has ______ ____ great __________ ____ him.
④他在不在这儿对我们的生活都没有影响。
Whether he is here or not will ______ ____ _________ ____ our life.
make no difference to
made a difference to
考点突破
3．make a difference
考点突破
3．make a difference
知识复现
（1）make a difference是一个固定短语，意为“起作用；有影响”。其后常接介词 to，构成短语 make a difference to，意为“对……产生影响”。difference 前可用 big、great 等修饰，表示影响的程度。
（2）make no difference (to) 意为“（对……）没有影响”。
①He wants to _______ the competition by himself.
A．take part in B．attend C．join D． join in
②我希望每个人都积极参与体育活动。
I hope everyone can _____ ____ ______ _____ ____ the sport.
take an active part in
考点突破
4．take part in
③他五年前参了军。
He _______ _____ _______ five years ago.
④—How do you practice your English
—I _______ an English Corner to practice it.
A．attend B．take part in C．join D．have
joined the army
考点突破
4．take part in
join 指加入某个党派、团体或组织等并成为其中的一员，如参军、入党、入团等；参与，加入（某项活动）；join sb. in sth./doing sth.表示“与某人一起做某事”
join in 指参加小规模的活动，如球赛、游戏等，join in (doing) sth.表示“参加（做）某事”
考点突破
知识复现
4．take part in
（1）take part in 意为“参加”，其宾语常是 competition、sport、activity、project 等群体性活动。
（2）辨析：take part in、attend、join 与 join in
take part in 指参加群体性活动，并在其中发挥一定作用；take an active part in 表示“积极参与”
attend 常指参加或出席正式的活动，如参加会议、婚礼，听报告、讲座等
考点突破
知识复现
4．take part in
（2）辨析：take part in、attend、join 与 join in
①They walked home last night because they couldn’t ________ to take a taxi.
A．leave B．buy C．afford D．allow
②I want to have a computer, but I can’t afford ________ (buy) one.
③这样的价格我付不起。太贵了。
I can’t ______ ____ at that price. It’s too expensive.
to buy
afford it
考点突破
5．afford
知识复现
afford 为及物动词，意为“承担得起（后果）；买得起”，其后常接名词、代词或动词不定式作宾语，它常与 can、could 或 be able to 连用，表示在能力上、经济上或时间上能承受或做到某事，多用于否定句。
考点突破
5．afford
①—Don’t _______ the waste paper. We can collect and recycle it.
—You’re right. Everyone should be a greener person.
A．blow away B．put away
C．throw away D．take away
②不要扔掉这些旧书。
Don’t ______ _____ these old books.
throw away
考点突破
6．throw away
③那本杂志很有用。不要把它扔掉。
The magazine is very useful. Don’t ______ ____ ______.
④—Tony’s room is tidy, isn’t it
—Yes. Because he always _______ his toys after playing with them.
A．moved away B．puts away
C．sweeps away D．gives away
throw it away
考点突破
6．throw away
考点突破
知识复现
（1）throw away 意为“扔掉；抛弃”，为“动词+副词”型短语，人称代词作宾语时，须放在 throw 和 away 之间；名词作宾语时，可放在两词之间，也可放在 away 之后。
6．throw away
（2）“动词+away”结构的短语
动词+away
throw away扔掉
put away收起来
go away离开
run away逃跑
take away带走；掠夺
give away捐赠
①Look, Mr. Wu __________ (play) football.
②Who __________ (knock) at the door
③That boy ______________(not, listen) to the teacher. He is sleeping.
④—Where’s your father, Tom —He ________ newspaper in the study.
A．reads B．read C．is reading D．has read
⑤—Honey, where are you
—I ________. Just let me put on my shoes.
A．come B．came C．am coming D．have come
语法突破
1．现在进行时
is playing
is knocking
isn’t listening
知识复现
（1）现在进行时表示现在正在进行或继续的动作。与它连用的时间状语有：now、right now、at the moment 等，前面有 look、listen、“it’s+时间点”等时，也用进行时。
（2）现在进行时的构成：
肯定句：主语+be+动词-ing+其他成分.
否定句：主语+be+not+动词-ing+其他成分.
一般疑问句：Be+主语+动词-ing+其他成分
特殊疑问句：疑问词+be+主语+动词-ing+其他成分
语法突破
1．现在进行时
语法突破
1．现在进行时
知识复现
（3）有些动词如 come、go、leave、begin、stay、start 等的现在进行时可以表示预定的或即将发生的动作，句中常有表示将来的状语：
e.g. I’m leaving on Sunday morning.
Jim is coming here this evening.
①—The book is popular. _______ you _______ it yet
—Yes, I have.
A．Are; reading B．Were; reading
C．Have; read D．Will; read
②I _______ the guitar ever since I was 8 years old.
A．played B．have played
C．am playing D．will play
语法突破
2．现在完成时
③—Oh, no! We are too late. The train _______.
—Well, we’ll have to catch the next train to Beijing.
A．leaves B．left C．will leave D．has left
④—How long _______ you _______ chemistry so far
—For almost one year.
A．are; studying B．do; study C．have; studied D．will; study
语法突破
2．现在完成时
知识复现
（1）现在完成时的两大用法
①已完成用法：表示到现在为止已经发生的动作或状态。常见时间状语有：already、just、ever (never)、yet、once、twice、... times、so far。
②未完成用法：表示过去已经开始，持续到现在的动作或状态，常和表示一段时间的状语连用，谓语多是延续性动词。常见时间状语有：for+时间段；since+时间点。
语法突破
2．现在完成时
知识复现
（2）现在完成时的三种句式
语法突破
2．现在完成时
肯定句式 主语+has/have+过去分词十其他.
否定句式 主语+hasn’t/haven’t+过去分词+其他.
一般疑问句式 Has/Have+主语+过去分词+其他
①Many people believe that tea _______ first in China about 5,000 years ago.
A．drank B．is drunk
C．was drunk D．has drunk
②My advice on learning English _______.
A．accepted B．is accepted
C．accepts D．are accepted
语法突破
3．被动语态
语法突破
③—A new park _______ in our hometown next year.
—Really Our hometown must be more beautiful.
A．will build B．is built C．will be built D．will built be
④The air pollution is very serious in our city. Something _______ about it now.
A．can do B．must do C．was done D．must be done
3．被动语态
知识复现
（1）被动语态的基本构成：be+及物动词的过去分词
（2）各种时态的被动语态
语法突破
3．被动语态
时态 常用搭配
一般现在时 am/is/are+及物动词的过去分词
一般过去时 was/were+及物动词的过去分词
现在进行时 am/is/are+being+及物动词的过去分词
过去进行时 was/were+being+及物动词的过去分词
现在完成时 have/has+been+及物动词的过去分词
过去完成时 had+been+及物动词的过去分词
知识复现
（3）含有情态动词的被动语态：
情态动词+be+及物动词的过去分词
语法突破
3．被动语态
①I have travelled a lot. I _______ speak four languages.
A．can B．may C．must D．need
②—_______ I park my car here for a while
—No, you mustn’t. Do you see the sign “NO PARKING”
A．Would B．May C．Must D．Should
③The schoolbag _______ be Tom’s. Here, his name is on it.
A．may B．could C．must D．might
语法突破
4．情态动词
④—Tony, is that Mr. Black over there
—I knew that he had gone to England. It _______ be him.
A．might B．could C．can’t D．must
⑤—Mum, I’ve signed for the box. What’s in it
—I’m not sure. It _______ be a present from your uncle.
A．need B．must C．will D．may
语法突破
4．情态动词
⑥—_______ I hand in the report today
—No, you needn’t.
A．Can B．Must C．Shall D．Could
⑦To keep children safe, we _______ put the things like knives and medicine away in our house.
A．may B．should C．can D．might
语法突破
4．情态动词
知识复现
情态动词通常没有人称和数的变化，其后接动词原形。情态动词常见用法如下：
（1）表能力（can/could）
can/could 意为“能，会”，表示能力，此时 could 为 can 的过去式。
语法突破
4．情态动词
知识复现
（2）表请求、许可（can/could，may/might）
① can/could 意为“可以”，表示请求、许可，此时could 不是 can 的过去式，只是表示更委婉、客气的语气。
② may/might 意为“可以”，用于肯定句中，表示允许；也可用于疑问句中，表示请求，用 might 语气更委婉。
语法突破
4．情态动词
知识复现
（3）表推测（must/can/could/may/might）
① 表示肯定推测时，must 的语气最强，指很大的可能性，意为“一定”。can、could、may 和 might 的语气依次减弱，意为“可能；或许”。
② 表示有把握的否定推测，要用 can’t，意为“不可能”。表示没有把握的否定推测，可用 may/might not，意为“可能不”。
语法突破
4．情态动词
must 在表示肯定推测时意为“一定”，但是用于否定句时，mustn’t 则表示“不能；禁止”。
知识复现
（4）表义务、责任（have to/must）
have to 和 must 都意为“必须”，表示义务或责任。have to强调客观需要，而 must 则强调主观看法。
（5）表建议（should）
should 意为“应该”，表示建议、劝告。
语法突破
4．情态动词
①He _______ quiet, but now he is very outgoing.
A．used to being B．used to be C．used being D．used be
②The boy _______ like English, but now he likes it very much.
A．didn’t used to B．didn’t use to C．not used to D．doesn’t to
③I used to ______ dumplings, but these days I’m used to ______ bread and milk.
A．eat; have B．eating; having C．eating; have D．eat; having
语法突破
5．used to
5．used to
后跟动词原形，意为“曾经；过去常常”，表示过去的习惯性动作或状态（现在已不再发生或存在）
（1）肯定句：主语+used to+动词原形+其他.
（2）否定句：主语+didn’t use/usedn’t to+动词原形+其他.
（3）一般疑问句：Did+主语+use to +动词原形+其他 /Used +主语+to +动词原形+其他
（4）特殊疑问句：特殊疑问词+一般疑问句
（5）反意疑问句：..., didn’t/usedn’t ...
be/get used to doing sth. 习惯于做某事
be used to do sth. 被用来做某事
used to
用法
句式
易混结构
语法突破
知识复现
话题梳理
Environment
Pollution
(污染问题)
Causes
(污染原因)
Solutions
(解决方案)
（1）instead of
（2）cost
（3）make a difference
（4）take part in
（5）afford
（6）throw away
（7）现在进行时
（8）现在完成时
（9）情态动词
（10）被动语态
（11）used to
要点回顾
6月5日为世界环境日，在今年的世界环境日，你们学校都举办了哪些活动？写一篇英语短文介绍一下。