(共35张PPT)
Unit
2
Exploring
English
Using
language——构词法
【思维导图】
观察下列句子，体会加黑词在句中的用法
①Computers
have
changed
the
way
people
work.
②I
think
a
change
might
do
you
good.
③I
hope
the
police
don't
ask
any
awkward
questions.
④It
never
occurs
to
them
to
question
the
doctor’s
decisions.
⑤The
washing
might
dry
outside
today,
the
sun's
shining.
⑥Our
parents
chose
to
come
here
with
the
hope
of
bettering
themselves.
⑦Anna
sat
her
finals
in
the
summer.
经典语法
【总结1】 通过观察可知：
(1)change在句①中用作____________，在句②中用作____________；
(2)question在句③中用作____________，在句④中用作____________；
(3)dry,
better通常用作形容词，在句⑤和句⑥中dry,
better都用作____________；
(4)final和black通常用作形容词，在句⑦中的final用作____________。
动词
名词
名词
动词
动词
名词
观察下列单词的变化，总结其变化的共同特征
①polite(礼貌的)→impolite(不礼貌的)
marry(结婚)→remarry(再婚)
②education(教育)→educational(教育的) free(空闲的)→freedom(自由)
③fast(快的)＋food(食物)→fast
food(快餐)
black(黑色的)＋list(名单)→blacklist(列入黑名单)
【总结2】 通过观察可知：
(1)第①组单词中，后面的单词是由前面的单词加____________构成的，后边单词词性一般____________；
(2)第②组单词中，后面的单词是由前面的单词加____________构成的，后边单词词性一般____________；
(3)第③组单词中，后面的单词是由前面的两个单词____________而成的。
前缀
不改变
后缀
改变
合并
构词法精讲
一、构词法的定义及分类
按照一定的语言规律创造新词的方法称之为构词法。英语构词法主要有转化法(Conversion)、合成法(Compounding)、派生法(Derivation)、首尾缩略法(Abbreviation)等。
二、几种常见的构词法
1.转化法
把一种词性用作另一种词性而词形不变的方法叫做转换法。
用法
举例
小结
动词转化为名词
He
tried
a
hard
try.他奋力尝试。
You
could
make
a
guess
at
it.
你可以猜一猜。
英语中，有的动词可作名词，有的名词可作动词，有的形容词可作动词，这种把一种词性用作另一种词性而词形不变的方法叫做转化法。
名词转化为动词
He
fingered
his
eyes.
他用手指揉眼睛。
He
is
always
nosing
into
other
people's
business.
他总爱管别人的闲事。
形容词转化为动词
The
city
quieted
down
again.
城市又平静下来。
Don't
dirty
your
new
dress.
别把你的新衣服弄脏了。
形容词转化为名词
The
temperature
reached
a
new
high.
气温达到新高。
A
single
to
London,
please.
请给我一张去伦敦的单程票。
2.合成法
由两个和两个以上的单词合成的词叫合成词，这种构成方法叫合成法。常见的合成法有以下几种
分类
方法
举例
合
成
名
词
名词＋名词
alarm
clock
闹钟
birth
control
生育节制
car
park
停车场
名词＋动名词
central
heating
中央供暖
zebra
crossing
斑马线
名词＋动词-er
painkiller镇痛剂
storyteller讲故事的人
形容词＋名词
first
aid
急救 open
letter
公开信
名词＋动词
baby-sit
看孩子 proof-read
校对
介词＋名词
overweight
超重 by-product副产品
副词＋动词
overhear
听见
undergo
经历
overthrow
推翻
副词+
名词
off-budget
预算外的
out-door
户外的
合
成
形
容
词
名词＋形容词
lifelong
终身的，毕生的
snow-white雪白的
名词＋v.-ing
man-eating
吃人的
face-saving
顾全面子的
名词＋v.-ed
hand-picked
精选的
air-conditioned
有空调的
形容词＋v.-ing
far-reaching
影响深远的 long-standing
由来已久的
形容词＋v.-ed
middle-aged
中年的
low-paid
工资低的
long-lost
长期丢失的
副词＋v.-ed
well-educated受过良好教育的
newly-made
新建的
副词＋v.-ing
well-meaning
好心好意的
介词＋名词/-ing
underlying含蓄的，潜在的
in-vehicle汽车内的
副词+名词
off-budget
预算外的
up-hill
上山的
合成
动词
形容词＋动词
ill-treat
虐待
short-change
少找钱
副/介词＋动词
uphold
维护
overcome战胜
合成副词
形容词＋名词
anyway无论如何
形容词＋副词
everywhere到处 somehow不知何故
副词＋副词
however尽管如此 whole-heartedly全心全意地
介词＋副词
forever永远
介词＋名词
beforehand预先 downstairs在楼下
合成介词
副词＋名词
inside在……里 outside在……外
介词＋副词
throughout遍及 without缺乏，没有
副词＋介词
into到……里 upon在……之上
合成代词
代词宾格＋self
herself她自己 himself他自己
物主代词＋self
myself我自己 yourself你自己
形容词＋名词
something某些东西 everything一切东西
3.派生法
在词根前面加前缀或在词根后面加后缀构成一个与原单词意义相近或截然相反的新词叫做派生法。
(1)前缀
分类
举例
总结
表示否定意义的前缀
appear出现→disappear消失
capable有能力的→incapable无能力的
proper合适的→improper不合适的
legal合法的→illegal非法的
fortune运气→misfortune不幸，厄运
sense道理；理智→nonsense胡说；废话
common平常的的→uncommon罕见的
表示否定意义的前缀常用的有
mis-，dis-，
il-，
im-，
in-，ir-，
non-，
un-等，在单词的前面加这类前缀常构成与该词意义相反的新词。
其他意义的前缀
wake醒来；叫醒→awake醒着的
hero英雄→superhero超级英雄
wave海浪→microwave
微波
day白天→midday中午，正午
skirt半身裙→miniskirt超短裙
broadcast播放→rebroadcast重播
表示其他意义的前缀常用的有：a-表状态；super-上，超；micro-微；mid-中；mini-微型的；re-重，再，复
改变词性的前缀
large大的→enlarge扩大
power力量→empower使强有力
grade级别→degrade使降低，贬黜
little形容词，小的→belittle动词，轻视
side边→outside外面的
break打破→outbreak爆发
改变词性的前缀有：en-，de-，be-，a-，out-等。en-前缀通常加在形容词或名词前构成动词；de-前缀通常加在名词之前构成动词，其意义大多和原名词相反；be-前缀可加在名词或形容词前构成动词；out-前缀可加在名词之前构成形容词，加在动词之前构成名词。
(2)后缀
分类
举例
总结
构成名词的后缀
China中国→Chinese中国人，汉语
teach教学→teacher教师
create创造→creator开创者
piano钢琴→pianist钢琴家
act行动→action行动
develop发展→development发展
happy高兴的→happiness幸福
构成名词的后缀常用的有-ence，
-ese(表某地人或语言)，-er/-or/-ist
(表人)，-ist(专业人员)，-tion(动作；过程)，-ment(性质；状态)，
-ness(性质；状态)等。
构成形容词的后缀
nation国家→national国家的
fashion时尚→fashionable时尚的
Canada加拿大→Canadian加拿大人的
help帮助→helpless无助的
north北→northern北方的
friend朋友→friendly友好的
rain雨→rainy下雨的
构成形容词的后缀常用的有-al，
-able(有能力的)，-(a)n(某国人的)，
-en(多用于表示材料的名词后)，
-ern(方向的)，-ese(某国人的)，-ful，-(ic)al，-ish，-ive，-less
(表示否定)，-like(像……的)，-ly，-ous，-some，-y(表示天气)等。
构成
副词
的后
缀
sad伤心的→sadly伤心地
to到→towards朝……，向……
west西方→westward(s)向西
back后部→backward(s)向后
构成副词的常用后缀有-ly
(主要用于形容词之后表示方式或程度)，
-ward(s)
(主要用于表示方位的词之后表示方向)。
构成
动词
的后
缀
broad宽的→broaden拓宽
class种类→classify把……分类
memory记忆→memorize记忆；背
构成动词的后缀常用的有-(e)n(多用于形容词之后)，-fy(使……化)，-ize
(使……成为)。
4.缩略法
用单词首字母组成一个新词。读音主要有两种形式：一种是读全称；另一种是分别读出各首字母，作为这个缩略词的读音。
缩写
全称
汉语
GDP
gross
domestic
product
国内生产总值
NBA
National
Basketball
Association
(美国)全球篮球协会
IT
information
technology
信息科技
EMS
express
mail
service
邮政特快专递
WTO
World
Trade
Organization
世界贸易组织
熟练地掌握好英语的构词法，对我们学习英语有很大的帮助。
第一，它可以帮助初学者辨认词性。学习者可以通过单词的前后缀辨别其词性，例如，beautiful(带形容词后缀-ful)“漂亮的”(为形容词)；kindness(带名词的后缀-ness)“善良”(为名词)。
第二，它可以帮助学习者推断词义。在英语单词中，有不少前缀或后缀有特别的意思，例如：kilogram(千克/公斤)，kilometer(公里)；通过前缀就可以推断出词的大概意思了。
第三，它可以帮助学习者扩大词汇量。掌握几千个基础词汇后，学习者可以利用掌握的基础词和构词法，比较容易地把词汇量扩大到一万以上。
第四，把相关联的词组合在一起，形成词群，就像单人组成一个家庭似的。以“help”为例来说：help-helpful-helpfully-helpfulness-helpless-helplessly-helplessness。这是一组词群，词根都是一样的词，关键就在于后缀了。
第五，建立清楚的词性概念。每学一个词都要知道它的词性，并且掌握与它相关的词，左引右联，很容易形成一个词汇网。
第六，建立词与词的联系，大多数单词都有不止一个词性，如果知道各种词性的用法，语言能力会得到更大的发展。
即学即练
（一）
写出下列句中加黑词的含义
①Light
music
can
help
people
calm
down.____________
②Don't
baby
your
children.
____________
③Alice
narrowed
her
eyes
and
gazed
at
the
horizon.____________
④We
have
to
book
hotel
rooms
ahead
of
time.____________
⑤It's
high
time
to
better
the
conditions
of
the
peasants.____________
⑥Mr
Green
is
going
to
chair
the
meeting.____________
⑦Please
turn
on
the
air
conditioner
to
cool
the
room.________________
使平静下来
娇惯
（使）变窄
预订
改善
主持
使凉快，使冷却
⑧I
can't
believe
that
this
small
room
houses
six
people
and
a
dog.____________
⑨The
committee
will?table?its?report?this?week.____________
⑩Would
you
like
to
sugar
my
coffee?
____________
提供住处
提交
给……加糖
名师提醒
有些词的词性转化后，词的重音发生变化。
(1)
object
/'?bd??kt/
n.
物体→/?b?d??kt/
v.
反对
(2)
import
/'?mp??t/
n.
进口→/?m'p??t/
v.
进口
(3)
decrease
/'di?kri?s/
n.
减少→/d?'kri?s]/
v.
减少
(4)
desert
/'dez?t/
n.
沙漠→/
d?'z??t/
v.
抛弃
(5)
record
/'rek??d/
n.
唱片，纪录→/r?'k??d/
v.
记录
即学即练（二）
翻译下列合成名词
①waiting
room
____________
②grown-up
____________
③seafood
____________
④rainfall
____________
⑤day-dreaming
____________
⑥son-in-law
____________
候车室
成年人
海鲜
下雨
白日梦
女婿
名师提醒
合成名词复数变化的五点规律：
1.以不可数名词结尾的合成名词无复数形式，例：housework，homework。
2.以man或woman为前缀的合成名词变复数时，前后两个名词都变成复数。例：
woman
teacher→women
teachers
man
waiter→men
waiters
3.以两个名词构成的合成名词(前面的名词为man或woman除外)，一般把后面的名词变成复数。例：
basketball→basketballs
girlfriend→girlfriends
4.以“可数名词＋介词(短语)”构成的合成名词变复数时，把前面名词变成复数。
例：
passerby→passersby
sister-in-law→sisters-in-law
5.以“动词/过去分词＋副词”构成的合成名词变复数时，在结尾加-s。
grown-up→grown-ups
stand-by→stand-bys
即学即练（三）
匹配下列前缀与其含义
①pre-
A.many
②multi-
B.again
③mini-
C.not
④post-
D.faraway
⑤un-
E.after
⑥re-
F.small
⑦tele-
G.between
⑧inter-
H.before
答案 ①H ②A
③F ④E
⑤C ⑥B
⑦D ⑧G
即学即练（四）
根据要求变化下列词形
(1)改成表示人的名词
①read→____________
②run→____________
③India→____________
④drive→____________
⑤act→____________
⑥Japan→____________
⑦visit→____________
⑧history→____________
reader
runner
Indian
driver
actor/actress
Japanese
visitor
historian
(2)改成形容词
①comfort→______________
②office→____________
③snow→____________
④interest→_________________
⑤distance→____________
⑥health→____________
⑦nation→____________
⑧difference→____________
comfortable
official
snowy
interested/interesting
distant
healthy
national
different
(3)改成副词
①simple→____________
②careless→____________
③whole→____________
④careful→____________
⑤heavy→____________
⑥quiet→____________
⑦possible→____________
⑧easy→____________
simply
carelessly
wholly
carefully
heavily
quietly
possibly
easily
Thanks
for
your
watching!(共31张PPT)
Unit
2 Exploring
English
Starting
out
&
Understanding
ideas
Neither
Pine
nor
Apple
in
Pineapple
Have
you
ever
asked
yourself
(1)why
people
often
have
trouble
learning
English?
I
hadn’t,
until
one
day
my
five-year-old
son
asked
me
(2)whether
there
was
ham
in
a
hamburger.There
isn’t.This
made
me
realize
(3)that
there’s
no
egg
in
eggplant
either.（4）Neither
is
there
pine
nor
apple
in
pineapple.This
got
me
thinking
(5)how
English
can
be
a
crazy
language
to
learn.
课文讲解
For
example,
in
our
free
time
we
can
sculpt
a
sculpture
and
paint
a
painting,
but
we
take
a
photo.And
(6)when
we
are
traveling
we
say
that
we
are
in
the
car
or
the
taxi,
but
on
the
train
or
bus!
(7)While
we’re
doing
all
this
traveling,
we
can
get
seasick
at
sea,
airsick
in
the
air
and
carsick
in
a
car,
but
we
don’t
get
homesick
(8)when
we
get
back
home.And
speaking
of
home,
why
aren’t
homework
and
housework
the
same
thing?
(9)If
“hard”
is
the
opposite
of
“
soft”，
why
are
“hardly”
and
softly
not
an
opposing
pair?
(10)If
harmless
actions
are
the
opposite
of
harmful
actions,
why
are
shameless
and
shameful
behaviors
the
same?
(11)When
we
look
out
of
the
window
and
see
rain
or
snow,
we
can
say
“it’s
raining”
or
“it’s
snowing”.But
(12)when
we
see
sunshine,
we
can’t
say
“it’s
sunshining”.
Even
the
smallest
of
words
can
be
confusing.(13)When
you
see
the
capitalized
“WHO”
in
a
medical
report,
do
you
read
it
as
the
“who”
in
“Who’s
that？”
What
about
“IT”
and
“US”？
You
also
have
to
wonder
at
the
unique
madness
of
a
language
(14)in
which
a
house
can
burn
up
as
it
burns
down,
(15)in
which
you
fill
in
a
form
by
filling
it
out,
and
(16)in
which
an
alarm
is
only
heard
once
it
goes
off!
English
was
invented
by
people,
not
computers,
and
it
reflects
the
creativity
of
the
human
race.(17)That
is
why
when
the
stars
are
out,
they
are
visible
,
but
when
the
lights
are
out,
they
are
invisible.
And
that
is
why
when
I
wind
up
my
watch,
it
starts,
but
when
I
wind
up
this
passage,
it
ends.
(1)why引导宾语从句，why在从句中作原因状语，意为“为什么”。
(2)whether引导宾语从句，在从句中不作成分，意为“是否”。
(3)that引导宾语从句，that在从句中不作成分，也不表示任何意义，可以省略。
(4)neither...or...既不……也不……，neither置于句首，句子要部分倒装。
(5)how引导宾语从句，在从句中作方式状语，意为“怎么，如何”。
(6)(8)(11)(12)(13)when引导时间状语从句。
(7)while引导时间状语从句。
(9)(10)if引导条件状语从句。
(14)(15)(16)中的in
which引导是定语从句。
(17)This
is
why...“这就是为什么……，这就是……的原因”，why后接表示结果的句子；but连接并列复合句。
1.opposite
adj.相反的，相对的，对立的，对面的n.对立面，对立物prep.在……对面/对过adv.在对面，在对过
·If
“hard”
is
the
opposite
of
“soft”，why
are
“hardly”
and
“softly”
not
an
opposing
pair？(P15)如果hard(坚硬的)是soft(柔软的)的反义词，为什么hardly(几乎不)和softly(柔软地)不是一对反义词呢？
重点
难点
讲解
重点单词
?写出下列句中opposite的词性及词义
①
I
watched
them
leave
and
then
drove
off
in
the
opposite
direction._________
②Hot
and
cold
are
opposites.__________________
③I
sat
opposite
him
during
the
meal.________________
④He
sat
down
in
the
chair
opposite.____________
adj.相反的
n.对立面，对立物
prep.在……对面/对过
adv.在对面
?补全句子
⑤The
result
_________________
what
they
had
expected.
结果和他们所期望的大为相反。
⑥Tom
is
very
careless,
but
his
brother
is
__________________.
汤姆很粗心，可他弟弟却正好相反。
was
opposite
to
just
the
opposite
2.confusing
adj.令人困惑的，难以理解的
·Even
the
smallest
of
words
can
be
confusing.(P15)
即使是最小的单词也会令人困惑。
·Confuse
defeat
with
failure,
and
you
are
doomed
indeed
to
failure.
如果混淆挫折和失败，你就注定会真正失败。
·The
drivers
was
confused
about
the
road
designs.
司机搞不清这些路标。
·At
this
moment,
the
child
was
frightened,
crying
loudly
and
shouting
in
confusion.
这时候，小孩害怕了，吓得“哇哇”地乱哭乱叫。
?介词填空
①You
should
not
confuse
your
work
____________
your
life.
②
The
young
woman
was
still
a
bit
confused
____________
what
happened.
?用confuse的适当形式填空
They
③____________
me
by
asking
so
many
④______________
questions.I
was
totally
⑤____________，
standing
there
in
⑥____________，
not
knowing
what
to
do.
with
about
confused
confusing
confused
confusion
用法总结
confuse...with/and...
把……和……混淆
be
confused
about
sth
对某事迷惑不解
in
confusion
困惑地，混乱地
3.reflect
vt.反映；反射(声、光、热等)；显示；表达；沉思
·English
was
invented
by
people,
not
computers,
and
it
reflects
the
creativity
of
the
human
race.(P15)
英语是人而不是电脑发明的，它反映了人类的创造力。
?写出下列句中reflect的含义
①
The
election
results
do
not
always
reflect
back
the
views
of
voters.____________
②
I
often
reflect
on
my
schooldays.
____________
③People
who
lead
busy
lives
have
no
time
to
stop
and
reflect.____________
反映
回顾
沉思
·The
manager
needed
more
time
to
reflect
on/upon
what
to
do.
经理需要更多的时间来思考做什么。
·On
reflection,
we
decided
to
change
our
plan.经考虑后，我们决定改变计划。
?单句语法填空/补全句子
④His
face
____________
(reflect)
in
the
big
mirror
when
he
passed
by.
⑤Your
clothes
are
often
a
____________
(reflect)
of
your
personality.
⑥On
dark
nights
children
should
wear
____________
(reflect)
clothing.
⑦At
first
I
thought
it
was
a
bad
idea,
but
________________
I
realized
she
was
right.
最初我认为那是个坏主意，但经再三思考，我认识到她是对的。
was
reflected
reflection
reflective
on
reflection
?用法总结
reflect
on/upon
sth
认真思考……
on/upon
reflection
经再三思考
1.have
trouble
(in)
doing
sth做某事有困难
·Have
you
ever
asked
yourself
why
people
often
have
trouble
learning
English?(P14)
你有没有问过自己为什么人们在学习英语时经常遇到困难？
?单句语法填空/完成句子
①I
have
no
trouble
in
____________
(find)
the
way
back
home.
②We
had
trouble
________
our
neighbors
over
the
noise
that
they
were
making.
③I
________________________________________________________
foreigners.
我与外国人交流有困难。
finding
with
have
trouble/difficulty/problems
in
communicating
with
重点短语
短语记牢
(1)have
trouble/difficulty/problems
(in)
doing
sth做某事有困难/麻烦
(2)have
trouble/difficulty/problems
with
sth在某方面有麻烦或有困难
2.look
out
of从……往外看
·When
we
look
out
of
the
window
and
see
rain
or
snow,
we
can
say
“it’s
raining”
or
“it’s
snowing”.(P15)当我们看到窗外下雨或下雪时，我们可以说it’s
raining(正在下雨)或it’s
snowing(正在下雪)。
?用look相关短语的适当形式填空
①She
________________
the
window
and
saw
the
postman
coming
up
the
path.
②They
run
after
me.I
don't
________________
them
and
keep
on
running.
looked
out
of
looked
back
at
③But
I
know,
no
matter
what
I
say,
they
will
still
__________________
us.
④A
working
party
has
been
set
up
to
___________
the
problem.
⑤He
asked
me
to
___________
the
article
for
any
spelling
mistakes.
look
down
upon/on
look
into
look
through
短语荟萃
look
into
调查
look
out 当心(不及物动词短语)
look
down
on/upon
看不起，轻视
look
out
for
当心，注意(及物动词短语)
look
back
at/on
回忆，回顾
look
through
翻阅，查找
look
up
to
尊敬
3.burn
down烧毁，烧掉(多指建筑物被烧塌)
·You
also
have
to
wonder
at
the
unique
madness
of
a
language
in
which
a
house
can
burn
up
as
it
burns
down...(P15)
你也不得不对一种语言的独特疯狂感到惊奇。在这种语言中，房子可以在burns
down(被烧毁)时burn
up(烧毁)……
?补全句子
①They
threatened
to
________________
our
house.
他们威胁要烧毁我们的房子。
②You’d
better
put
more
wood
on
the
fire
to
make
it
______________.
你最好往火上添着柴，让它烧旺。
burn
down
burn
up
③The
fire
_______________
before
the
fire
engines
arrived.
在消防车到达之前，火已经熄灭了。
④His
house
_______________________________
due
to
the
big
fire,
which
made
him
homeless.
由于大火，他的房子被烧毁了，这使他无家可归。
had
burnt
out
was
burned
to
the
ground
短语荟萃
burn
up 烧光，烧尽(多指东西被烧掉)；(通过锻炼)消耗(热能)
burn
out
烧坏；燃尽；耗尽体力
burn
sth
to
the
ground
将……烧成平地
1.Neither
is
there
pine
nor
apple
in
pineapple.
(P14)
菠萝中既没有松树也没有苹果。
【分析】
neither...nor...意为“既不……也不……”，其表达的是否定含义。这个结构可连接任意两个并列的成分。
【总结】
neither...nor...的用法：
(1)neither...nor...连接两个主语时，谓语动词的单复数应和临近的主语一致，遵循“就近原则”。
(2)
neither也可以单独作主语，表示“两者中没有一个”。
经典句式
(3)表示“一个人没有做某事，另一个人也没做同一类事”时，可用neither或nor引起的部分倒装句进行简略回答，其结构为：Neither/Nor＋助动词/情态动词/be动词＋主语。
·Neither
grandpa
nor
grandma
likes
watching
TV
at
home
all
day
long.爷爷奶奶都不喜欢一天到晚地宅在家里看电视。
·Neither
of
them
likes
cartoons.他们俩都不喜欢漫画。
·They
won't
go
to
the
cinema
tomorrow.
Neither/Nor
will
we.
明天他们不去看电影，我们也不去。
单句语法填空
①Neither
Cindy
nor
her
parents
____________
(like)
raising
pets
at
home.
补全句子
②—I
have
never
been
to
Tokyo
yet.
—____________________(我也没去过).
句型转换
③Mike's
friends
were
not
willing
to
travel
to
Qinghai
by
air
and
Mike
wasn’t
either.
→________
________
________
________
________
________
willing
to
travel
to
Qinghai
by
air.
like
Neither/Nor
have
I
Neither
Mike's
friends
nor
Mike
was
2.That
is
why
when
the
stars
are
out,
they
are
visible,
but
when
the
lights
are
out,
they
are
invisible.
(P15)
这就是为什么星星出来时是看得见的，灯灭了是看不见的。
【分析】
本句中That
is
why...意为“这就是……的原因”；why引导表语从句，表示结果；That指代上文提到的事实。
【拓展】
其他相关句型：
(1)
This/That
is/was
why...这/那就是……的原因(why引导表语从句，表示结果)
(2)That/It
is/was
because...这/那是因为……(because引导表语从句，表示原因)
(3)The
reason
why...is/was
that...……的原因是……(why引导定语从句并在从句中做状语；that引导表语从句，表示原因)
Peter
fell
off
his
bike.That
was
why
he
hurt
his
arm.
＝Peter
hurt
his
arm.That
was
because
he
fell
off
his
bike.
＝The
reason
why
Peter
hurt
his
leg
was
that
he
fell
off
his
bike.
彼得从自行车上摔了下来。那就是他弄伤胳膊的原因。
单句语法填空
①Lucy
spent
all
her
time
chatting
on
the
WeChat.
This
is
_____
she
failed
in
her
final
test.
②Jess
decides
to
go
to
the
countryside.This
is
____________
she
is
tired
of
life
in
the
big
city.
句型转换
③Mr
Smith
came
late
for
the
meeting
because
he
was
caught
in
a
heavy
traffic.
→
Mr
Smith
was
was
caught
in
a
heavy
traffic.________
________
________
he
came
late
for
the
meeting.
→Tom
came
late
for
the
meeting.
________
________
________
he
was
caught
in
a
heavy
traffic.
→________
________
________
Tom
came
late
for
the
meeting
________
________
he
was
caught
in
a
heavy
traffic.
why
because
That
was
why
That
was
because
The
reason
why
was
that
Thanks
for
watching!
