资源简介

(共24张PPT)
Word power
Unit 7 The natural world
We can add the suffix -Iy to some adjectives to form adverbs or adjectives. We can also add the suffix -ly to some nouns to form adjectives.
Adjective Adverb
real
bad
careful
slow
near
easy really
badly
carefully
slowly
nearly
easily
Noun Adjective
friend
love
year
month
week
day friendly
lovely
yearly
monthly weekly daily
Adjective Adjective
kind
like
live
dead kindly
likely
lively
deadly
TIP
The following adjectives are also adverbs:
daily weekly monthly
yearly kindly deadly
A Millie is writing about coral plete her text with the correct forms of the words in brackets.
You might hear about the Great Barrier Reef in Australia, the largest reef system /'s st m/ on earth. You can even see it from space!
When you look at a coral reef, you might think it is just a group of colourful rocks. However, corals are (1) _________ (actual) living things.
actually
长难句分析：这是一个主从复合句。从句是由When引导的时间状语从句，主句中包含了一个省略了that的宾语从句。
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Now many scientists are worried about coral reefs because they are facing serious problems. The biggest problem is ocean pollution. The ocean water is becoming dirtier because of different human activities, and this causes/'k z z/ corals to die (2) __________ (slow).
What‘s more, climate change is (3) __________ (great) damaging /'d m d / the ocean‘s environment. The ocean is getting warmer, and it may not be a (4) _________ (friend) environment for coral reefs.
slowly
greatly
friendly
(5) __________ (lucky), more and more scientists are paying attention to coral reefs. They are working (6) __________ (hard) to find ways to save them.
~~~~
~~~~~~
后接名词、代词、动词-ing 形式
Luckily
hard
在英语中，后缀“-ly”有两个用途：一是用作副词的标志，最常见的是将形容词转化为副词 ，表示动作的方式、程度或频率，用于修饰动词、形容词或其他副词；一是用作形容词的标志，通常是将名词转化为形容词，表示“具有……性质的”，用于描述人或事物的特征。此外，后缀“-ly”也可加在一些形容词后，构成形容词。
探究一 构词法
后缀-ly
1. 后缀“-ly”用于形容词后，将其转化为副词，用来描述动作的方式或程度。quick→quickly（快速地）；slow→slowly（缓慢地）；wise→wisely（明智地）。
2. 后缀“-ly”用于名词后，将其转化为形容词：①表示“具有……性质或特点的”，friend→friendly（友好的）。②表示“每隔……时间的”，week→weekly（每周的）；year→yearly（每年的）。
3. 后缀“-ly”用于形容词后，词性不变，但含义发生质变。lone（单独的）→lonely（孤独的）；dead（死的）→ deadly（致命的）。
学会运用1: He read the letter more _________ (careful) the second time.
学会运用2: My sister is good at math. She can work out the problems __________ (easy).
学会运用3: The __________ (friend) waiter served us with a big smile.
学会表达4: 我们应该做一些日常锻炼来保持健康。
We should do some _________ _________ to keep healthy.
carefully
easily
friendly
daily exercise
1 cause /k z/ vt. 使发生，造成，导致 n. 原因；理由(教材P100)
(观察)· The heavy rain caused a flood in the city.
大雨导致了城市里面的洪水。
· The mistake has caused me a lot of trouble.
这个错误给我带来了很多麻烦。
· The cold weather caused the plants to die.
寒冷的天气使植物死亡。
探究二 核心单词
· The police haven’t found out the cause of the accident.
警察还没有查明事故的原因。
· You don’t have any cause to be late for work.
你没有任何理由上班迟到。
归纳拓展
cause 作动词，意为“使发生，造成，导致”，通常接名词或名词短语作宾语，表示某种结果；cause 作名词，意为“原因；理由”。
cause sb. sth. 给某人造成某物（通常指不好的结果）
cause + 宾语+ 不定式，促使/ 导致某人/ 某物做某事
学会运用1: Smoking too much may c lung cancer.
学会运用2: The c of the accident was the driver’s carelessness.
学会表达3: 大雨导致他们推迟了计划。
The heavy rain ________ them _______ put off their plan.
ause
ause
caused to
2 damage /'d m d / vt. 损害，毁坏 n. 损坏，损失；损害(教材P100)
(观察)· Smoking can damage your health. 吸烟会损害你的健康。
· The storm damaged quite a few houses.
暴风雨毁坏了相当多的房子。
· The earthquake caused a lot of damage to the city.
地震给这座城市带来了巨大破坏。
· What you said caused great damage to her.你说的话对她伤害极大。
归纳拓展
damage 既可以作动词，也可以作名词，意为“损害；毁坏；破坏”，可以指有形的物体损害，也可以指无形的损失，如财产或精神等。
cause damage to sb./ sth. 对某人或某物造成损害
学会运用4: Smoking seriously _____________ (damage) John’s health and led to his death at last.
学会表达5: 树根会对你的房屋带来损害。
Tree roots may __________ __________ __________ your house.
damaged
cause damage to
1 be worried about 担心…… (教材P100)
(观察)· She is worried about her son because he came home late. 她担心她的儿子，因为他回家晚了。
· The girl was worried about seeing her new teacher.
那个女孩担心看到她的新老师。
· Parents always worry about their children.
父母总是为自己的孩子担忧。
· She is anxious about her lessons. 她对自己的课程感到焦虑。
探究三 核心短语
归纳拓展
be worried about 是一个系表结构的短语，相当于一个及物动词词组，后面接名词或代词作宾语，表达对某事物或人的担忧或忧虑。about 是介词，如果后面出现动词，要使用动名词形式。
be worried about 的同义短语是be anxious about“对……感到焦虑”，be 动词要根据时态和主语变化形式。
学会运用1: What subject are you _________ ________ (担心) the most
at school
学会表达2: 我担心我的考试成绩。
I __________ __________ my exam results.
学会表达3: 老年人总是为他们的健康感到焦虑。
The old __________ __________ __________ __________ their health.
worried about
worry about
are always worried about
2 because of 因为(教材P100)
(观察)· He didn’t go to school because of his illness.
他因病没有去上学。
· It’s all because of what you said. 那完全是因为你说的话。
· He was late for work because of helping an old man.
他因为帮助一位老人而上班迟到了。
· I stayed at home because I was too tired.
我待在家里，因为我太累了。
辨析: because 与because of
because because 是连词，用于连接一个完整的句子，包括
主语和谓语，表示原因。
because of because of 是介词短语，后接名词、人称代词宾格
或what 从句，后面出现动词时要使用动名词形式。
学会运用4: We had to stay at home _______ the heavy rain yesterday.
A. because of B. in front of
C. in the middle of D. instead of
学会表达5: They didn’t go out for a picnic because the weather was bad.（改为同义句）
They didn’t go out for a picnic _________ _________ the bad weather.
A
because of
学会表达6: 那条路因为大雪而封闭了。
The road is closed _________ _________ the heavy snow.
because of

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