Unit
7
Grammar：
who,that,which
引导的定语从句
To
learn
Relative
clauses
with
who,
that
and
which.
how
to
choose
who,
that,
which
correctly.
Attract
students’
interest
to
English
learning.
A
matching
game！！！
Match
the
two
sentences
I’m
reading
a
book.
The
book
is
about
Bill
Gates.
2.He
is
a
teacher.
The
teacher
teaches
us
Chinese.
3.I
don’t
like
the
man.
He
is
smoking.
4.Where
is
the
picture?
You
bought
it
last
week.
参考答案：
I’m
reading
a
book
that/which
is
about
Bill
Gates.
He
is
a
teacher
who/
that
teaches
us
Chinese.
I
don’t
like
the
man
who
is
smoking.
Where
is
the
picture
that
you
bought
last
week?
一、什么是定语从句？
如果一个句子担任定语，那么这个句子就是定语从句。
定语从句可以修饰名词或代词，还能修饰整个主句或主句的一部分
二、定语从句的构成
There
was
a
young
man
who
liked
adventure.
A
young
man
who
liked
adventure.
被定语修饰的词是先行词
引导定语从句的词是关系词
关系词一般紧跟在先行词之后引导定语从句。
定语从句
who,
that,
which的用法与区别
当先行词指人时，由who
或
that
引导定语从句；当先行词指物时，由关系代词that
或which
引导定语从句。
who,
that
和
which
引导的定语从句
一、概念
在句中修饰名词或代词、作定语的句子叫定语从句。
例：
The
man
who
(that)
came
first
is
Mike.
第一个来的人是迈克。
The
towel
which
(that)
you
gave
me
wasn’t
clean.
你给我的毛巾不干净。
My
father
does
morning
exercises
every
day,
which
is
good
for
his
health.
我父亲每天做早操，这点对他的身体有好处
定语从句的构成
由who,
that,
which
引导的定语从句在复合句中充当定语成分。被定语从句修饰的名词或代词称作先行词，引导定语从句的
who,
that
和
which
称作关系代词。
There
was
a
young
man
who
liked
adventure.
A
young
man
who
liked
adventure.
被定语修饰的词是先行词
引导定语从句的词是关系词
关系词一般紧跟在先行词之后引导定语从句。
【即学即练】
请你阅读下列句子,
每个句子中哪部分是定语从句?每个定语从句修饰的词是哪个?
1.Did
you
see
the
book
which/that
I
bought
yesterday.
2.He
was
the
student
who/that
was
late
yesterday.
3.The
pen
which/that
my
dad
bought
for
me
is
missing.
4.
She
is
the
girl
who/that
found
your
wallet.
参考答案：
1.定语从句：which/that
I
bought
yesterday
先行词：
the
book
2.定语从句：
who/that
was
late
yesterday
先行词：
the
student
3.定语从句：which/that
my
dad
bought
for
me
先行词：
the
pen
4.定语从句：who/that
found
your
wallet
先行词：
the
girl
三、由who,
that,
which
引导的定语从句的用法
当先行词指人时，由who
或
that
引导定语从句；当先行词指物时，由关系代词that
或which
引导定语从句。
eg.
I
love
singers
who/that
write
their
own
lyrics.
我喜欢自己写歌词的歌手。
The
fish
which/that
we
bought
were
not
fresh.
我们买的鱼不新鲜了。
who,
that
和
which
在定语从句中可以作主语，也可以作宾语。作主语时关系代词不可以省略；作宾语时关系代词可以省略。
eg.
Do
you
know
the
man
who
is
talking
with
our
Chinese
teacher?
你认识那个正在和我们的语文老师谈话的人吗？（who
在定语从句中作主语）
Have
you
seen
the
book
on
how
to
study
physics
that
I
ever
showed
to
you
yesterday
morning?
你看见我昨天上午给你看的那本关于怎样学习物理的书了吗？（that
作
showed
的宾语，代替
book）
【即学即练】
(
)1.
The
man_____you
saw
in
the
street
is
Tommy.
A.
which
B.whose
C.
that
D.as
(
)2.
Is
this
the
museum
_____
a
lot
of
students
visited
yesterday?
A.
Who
B.
which
C.
the
one
D.
whom
(
)3.
The
boy
_____
has
an
interesting
story
book.
A.
who
sit
next
to
you
B.
which
sits
next
to
you
C.
whom
sits
next
to
you
D.
that
lives
next
to
you
(
)4.
Don’t
go
in,
this
is
the
shop
_____
we
have
just
been
to.
A.
who
B.
that
C.
where
D.
when
(
)5.The
speaker
will
tell
us
about
some
writers
and
their
works
_____are
known
to
us.
A.
which
B.
that
C.
as
D.
who
(
)6.
I
hate
the
people
________
don’t
help
others
when
they
are
in
trouble.
A.
who
B.
which
C.
they
D.
where
(
)7.
The
foreigner
_________
visited
our
school
is
from
Canada.
A.
which
B.
when
C.
who
D.
whom
(
)8.
George
Mallory
was
an
English
school
teacher
_______
loved
climbing.
A.
who
B.
whom
C.
he
D.
which
(
)9.
This
is
the
house
_______
I
want
to
buy.
A.
in
which
B.
that
C.
whose
D.
where
(
)10.
This
is
the
bag_____my
mother
bought
yesterday.
A.that
B.who
C.whom
D.this
参考答案：1-5
CBDBB
6-10
ACABA
关系代词who（whom）的用法
This
is
the
teacher
who
teaches
us
maths.
这就是教我们数学的老师。
She
is
the
girl
who(whom)
I
met
at
the
party.
她就是我在晚会上遇见的那个女孩
She
is
the
girl
with
whom
I
went
there.
Who
可以代人（即它的先行词必须是人），在从句中可以担任主语，往往也可以代替在从句中担任宾语的whom，但它的前面不能有介词，如果带介词则必须用宾格的whom：介词+whom
关系代词that的用法
a.
The
dog,
which
was
very
old
now,
became
ill
and
died.
那只狗，现在已经很老了，病死了
The
dog,
that
was
now
very
old,…
(x)
b.
The
money
that
(which)
is
in
the
wallet
is
mine.
放在这个钱包里的钱是我的
The
money
that
(which)
my
mother
gave
me
yesterday
has
been
stolen.
昨天我妈妈给我的钱已经被偷走了
只用who，不用that的情况分析
The
man
who
(that)
came
first
is
Mike.
指代人时，可以看出who，that在许多情况狂下可以通用，但有时则用who，而不用that。
a.
先行词是one，ones，anyone时用who
One
who
has
nothing
to
fear
for
oneself
dares
to
tell
the
truth.
一个无所畏惧的人敢于说实话。
The
ones
who
flatter
me
don’t
please
me.
那些奉承我的人并不能取悦我。
Don’t
tell
anyone
about
the
news
who
oughtn’t
to
know
it.
不能把这个消息告诉任何一个不应该知道它的人
Anyone
who
fails
to
finish
the
task
given
should
be
criticized.
任何人不能完成指定的任务，都应收到批评
b.
先行词为those时，用who为关系代词
Those
who
want
to
go
to
the
Great
Wall
sign
up
here.
凡是想去长城的人在这里签名
c.
当先行词有较长的后置定语时
I
met
a
foreigner
in
the
street
yesterday
who
could
asked
me
questions
in
Chinese.
昨天，在街上，我遇到一位能用汉语问我问题的外国人
d.
一个句子中带有两个定语从句，期中一个定语从句关系代词时that，另一个用who
The
boy
that
you
met
last
night
is
the
group
leader
who
studies
very
hard.
昨天晚上你遇见的那位男孩时位学习非常努力的组长。
e.
在there
be开头的句子
There
is
an
old
man
who
wants
to
see
you.
有位老人要见你
关系代词which的用法
在限定性定语从句中，which和that在代物时常常可以通用，但有时只宜用于which，不用that
a.
关系代词有介词时
This
is
the
hotel
in
which
you
will
stay.
b.
如果有两个定语从句，其中一句的关系词时that，另一句用which
Let
me
show
you
the
novel
that
I
borrowed
from
the
library
which
was
newly
open
to
us.
只用that，不用which的情况分析
有些情况下，只用that，
而不用which。
先行词是最高级形容词或它前面有最高级形容词时
This
is
the
best
that
has
been
used
against
pollution.
English
is
the
most
difficult
subject
that
you
will
learn
during
these
years.
先行词是序数词，或它前面有一个序数词时
He
is
the
last
person(that)
I
want
to
see.
It
is
the
first
American
movie
of
this
kind
that
I’ve
ever
seen.
主句已经有疑问词who或which时
Which
is
the
bike
that
you
lost?
Who
is
the
woman
that
was
praised
at
the
meeting?
先行词即有人又有物，用that
Do
you
know
the
things
and
persons
that
they
are
talking
about?
The
bike
and
its
rider
that
had
run
over
an
old
man
were
taken
to
the
police
station.
先行词是all,much,little,something,everything,anything,nothing,none,the
one
等代词
You
should
hand
in
all
that
you
have.
I
mean
the
one
that
you
talked
about
just
now.
先行词前面有only,any,few,little,no,all,one
of,
the
same,
the
very等修饰词
The
only
thing
that
we
can
do
is
to
give
you
some
money.
Li
Ming
is
the
only
one
that
got
full
marks
in
our
class.
Li
Ming
is
one
of
the
students
that
want
to
be
teachers
in
our
class.
1.
that
只能用在限定性定语从句中，在非限定性定语从句中永远不用that，另外介词后面不能跟that，要跟which
2.
在限定性定语从句中，which和that在代替物时，一般可以通用
3.
只能用that不能用which的情况
记忆口诀
关系代词引定从，who
指人，which
指物，that
可指人和物，主语宾语皆可充。who
和
whom
同指人，作主作宾各不同。
例题1：
I
love
people_____are
friendly
to
others.
A.
which
B.
whose
C.
who
例题解析：先行词people是人，关系词作主语应该用who/that
例题答案：C
例题2：
The
house
____Lu
Xun
used
to
live
is
now
a
museum.
A.
which
B.
that
C.
in
which
D.
there
例题解析：将定语从句的先行词house还原从句中应是Lu
Xun
used
to
live
in
the
house,所以应用in
which或where
例题答案：C
例题3：
The
movie
_____
we
saw
last
night
was
fantastic.
A.
that
B.
what
C.
whose
D.
who
例题解析：因先行词the
movie
是物体，故关系词用that或which
例题答案：A
综合练习
基础练习
The
house
_____
(
that/
where)
we
live
in
is
very
big.
The
boy
____（who
/
whose）
is
wearing
a
black
jacket
is
very
clever.
This
is
the
present___
(
which
/
what)
he
gave
me
for
my
birthday.
The
man
_____(
who/
which)
talked
to
you
just
now
is
an
engineer.
He
talked
about
the
teachers
and
schools
____
(
who/
that)
he
had
visited.
There
is
nothing
in
the
world
_____
(
that
/
which)
can
frighten
him.
She
wears
a
gold
ring,
_____
(
which
/
that
)
is
very
uncommon
in
our
class.
We
visited
a
factory
_____
(
which
/
where)
makes
toys
for
children.
巩固提高
1.
Do
you
know
the
lady____
is
giving
a
speech?
Sure.
She
is
a
famous
scientist
called
Tu
youyou.
She
won
the
2015
Nobel
Prize.
A.
who
B.
whom
C.
which
D.
whose
2.
Great
changes
have
taken
place
in
our
city
in
the
past
ten
years.
Everything___
comes
into
sight
is
so
new
to
me.
A.
that
B.
which
C.
who
D.
whom
3.
Those___
do
not
leave
you
in
time
of
trouble
are
real
friends.
A.
which
B.
who
C.
if
4.
The
stories___
were
written
by
Mark
Twain
are
often
humorous.
A.
that
B.
those
C.
who
D.
what
5.
Is
there
anything
____
to
you?
A.
that
is
belong
B.
that
belong
C.
that
belongs
D.
which
belongs
6.
I
hate
people
____
laugh
at
others
when
they
are
in
trouble.
A.
who
B.
whom
C.
which
D.
they
7.
Running
man
is
a
very
relaxing
TV
program___
is
hot
among
the
young
peope.
A.
what
B.
which
C.
who
D.
whom
8.
Tony
ate
the
big
cake___i
made
this
morning.
A.
what
B.
that
C.
who
9.
When
Robinson
Crusoe
got
to
the
island,
the
first
thing___
he
did
was
to
look
for
some
food.
A.
who
B.
that
C.
which
D.
whom
10.
Do
you
know
the
man
____
is
talking
to
Miss
Wu?
A.
he
B.
whom
C.
who
D.
which
参考答案
基础练习
1.where
2.who
3.which
4.who
5.that
6.that
7.which
8.which
巩固提高
1-5：AABAC
6-10：ABBBC
一、单项选择题。
1.
The
film___
Peter
is
talking
about
is
directed
by
Feng
Xiaogang.
A.
which
B.
who
C.
whom
D.
where
2.
The
first
thing____
I
am
going
to
do
this
evening
is
to
write
to
my
father.
A.
that
B.
which
C.
who
3.
The
young
lady___
is
interviewing
Lin
Zhixuan
about
the
program
I
am
a
Singer
is
form
21st
Century
Talent
Net.
A.
who
B.
whom
C.
which
D.
whose
4.
Mr
Smith____
is
smoking
is
looking
for
___
he
lost
yesterday.
A.
whom;which
B.
who;what
C.
that;who
D.
which
;
where
5.
Theaters
may
have
a
brighter
future
if
they
can
provide
a
movie
experience___
people
cannot
get
at
home.
A.
that
B.
who
C.
whom
D.
what
6.
The
earth
is
the
planet___
provides
us
with
everything
we
need,
fresh
air,
clean
water
and
soon.
It’s
our
duty
to
protect
it.
A.
who
B.
that
C.
where
7.
Everyone
has
his
aim
in
life.
However,
you
can’t
get
fat
on
one
mouthful.
Start
with
the
easiest
thing_____
you
can
control.
A.
who
B.
that
C.
which
8.
—
What
do
you
think
of
the
school
uniforms?”
—
Very
good.
I
like
clothes
______
make
me
feel
comfortable.”
A.
that
B.
what
C.
who
9.
There
will
be
a
flower
show
in
the
park
_______
we
visited
last
week.
A.
who
B.
when
C.
what
D.
which
10.
—
Now
many
people
smoke
and
get
ill.
—So
we
should
do
something
______
can
help
stop
smoking.
A.
what
B.
who
C.
/
D.
that
二、用关联词完成下列句子。
I
have
a
friend
________
likes
listening
to
classical
music.
Yesterday
Emily
was
wearing
the
new
dress
__________
I
gave
her.
The
man
______
leg
broke
in
a
match
used
to
be
a
football
player.
My
parents
live
in
a
house__________is
more
than
100
years
old.
The
boy
with
_______
John
spoke
is
my
brother.
Kevin
is
reading
a
book
__________is
too
difficult
for
him.
Is
there
anything
________
you
want
to
buy
in
the
town.
All
______
we
can
do
is
to
study
hard.
9.
The
first
one
_____
stands
up
is
a
little
boy.
参考答案：
一、1-5：AAABA
6-10：BBADD
二、1.who/that
2.Which/that
3.Whose
4.Which/that
5.whom
6.which/that
7.That
8.that
9.that
概念:在复合句中修饰名词或代词
的句子。
定语从句的结构：
先行词
+
关系词
+
句子
关系代词：
指物：that
which
指人：who
(主/宾格)
that
whom（宾格）
that－
既可指人，也可指物，作主语，不能省略；作宾语，可以省略。
which－指物，作主语，不能省略；作宾语，可以省略。
which－指物，作主语，不能省略；作宾语，可以省略。Unit7
Grammar
练习
1.
Nearly
all
the
streets
are
in
straight
lines,
________
from
east
to
west.
Those
________
run
from
north
to
south
are
called
avenues.
A.
running;
that
B.
run;
who
C.
running;
who
D.
run;
that
2.
This
is
the
case
________
he’s
had
all
his
money
stolen.
A.
when
B.
where
C.
that
D.
on
which
Mr.
Smith
will
pay
a
visit
to
Beijing
this
autumn,
________
we
will
enjoy
the
Olympic
Games
in
2008.
A.
where
B.
when
C.
which
D.
how
4.
The
artist
will
not
paint
people
or
animals
but
he
will
paint
anything
________
.
A.
that
the
little
girl
asks
him
B.
the
little
girl
asks
him
to
C.
for
the
little
girl
to
ask
him
D.
what
the
little
girl
asks
him
5.
—How
did
you
get
in
touch
with
the
travel
agent,
Robin?
—Oh,
that’s
easy.
I
surfed
the
Internet
and
then
called
one
________
the
telephone
number
is
provided.
A.which
B.
in
which
C.
of
which
D.
whose
6.
October
15th
is
my
birthday,
________
I
will
never
forget.
A.
when
B.
that
C.
what
D.
which
7.
The
treatment
will
continue
until
the
patient
reaches
the
point
________
he
can
walk
correctly
and
safely.
A.
when
B.where
C.
which
D.
whose
8.
There
are
several
research
centers
in
China
________
a
certain
disease
called
Bird
Flu
is
being
studied.
A.
which
B.
where
C.
when
D.
what
9.
I
hope
that
the
little
________
I
have
been
able
to
do
does
good
to
them
all.
A.
which
B.
what
C.
that
D.
when
10.
The
time
is
not
far
away
________
modern
communications
will
become
widespread
in
China’s
vast
countryside.
A.
as
B.
when
C.
until
D.
before
11.
________
is
known
to
everybody,
Taiwan
is
a
part
of
China.
We
must
unify
it.
A.
It
B.
As
C.
Which
D.
What
12.
I
shall
never
forget
the
day
________
Shen
Zhou
V
was
launched,
________
has
a
great
effect
on
my
life.
A.
when,
which
B.
that,
which
C.
which,
that
D.
when,
that
13.
The
bread
my
wife
makes
is
much
better
than
________
you
can
buy
at
a
store.
A.
that
which
B.
one
that
C.
that
of
which
D.
this
of
which
14.
There
is
no
such
place
________
you
dream
of
in
all
this
world.
A.
that
B.
what
C.
which
D.
as
15.
The
people,
________
had
been
damaged
by
the
flood,
were
given
help
by
the
Red
Cross.
A.
all
whose
homes
B.
all
of
whose
homes
C.
all
their
homes
D.
all
of
their
homes
16.
The
humans
are
destroying
nature
day
by
day,
________
of
course,
will
cause
severe
punishment
from
it
sooner
or
later.
A.
who
B.
when
C.
on
which
D.
which
17.
Is
this
research
center
________
you
visited
the
modern
equipment
last
year?
A.
where
B.
that
C.
the
one
that
D.
the
one
where
18.
Some
pictures
of
the
river
brought
the
days
back
to
the
old
________
they
swam
in
it.
A.
when
B.
that
C.
who
D.
where
19.
The
man
showed
us
so
heavy
a
stone
________
no
man
can
lift.
A.
that
B.
as
C.
which
D.
and
20.
He
stayed
there
for
quite
a
long
time,
during
________
time
he
learned
much
spoken
English.
A.
that
B.
this
C.
which
D.
same
一、单项选择题。
1.
We
all
like
the
story
about
the
teacher
_______
happened
in
our
school
last
week.
A.
which
B.
who
C.
whom
D.
what
2.
The
English-Chinese
dictionary
my
father
bought
for
me
many
years
ago
is
still
of
great
value.
A.
whose
B.
when
C.
who
D.
that
3.
I
still
remember
the
time
_______
we
spent
together
at
XiSai
mountain
last
year.
A.
when
B.
what
C.
who
D.
which
4.
One
of
the
most
delicious
drinks
_________
I
like
is
orange
juice.
A.
which
B.
that
C.
whose
D.
whom
5.
—
There
are
so
many
girls
over
there.
Which
one
is
your
sister?
—
The
one
______hat
is
yellow.
A.
who
B.
whose
C.
that
D.
which
6.
I
don’t
like
stories
____
have
unhappy
endings.
A.
who
B.
that
C.
where
D.
those
7.
The
young
lady
___
we
met
yesterday
is
our
new
maths
teacher.
A.
what
B.
whose
C.
whom
D.
which
8.
My
necklace
is
not
the
only
thing
____
is
missing.
A.
that
B./
C.
which
D.
who
9.
The
first
thing
_____
we
should
do
is
to
protect
the
wild
animals.
A.
that
B.
which
C.
what
D.
how
10.
Do
you
know
the
man___
came
here
yesterday?
Yes,
he
bought
me
the
most
interesting
book_____
I
had
wanted
to
buy.
A.
who,
which
B.
who
,
that
C.
whom,
which
D.
what
,
that
二、填入适当的关系代词或关系副词完成下列句子
1.
The
boys________
are
playing
football
are
from
Class
One.
2.
Those
______
want
to
go
to
the
museum
must
be
at
the
school
gate
at
7
tomorrow.
3.
Mr
Liu
is
the
person
________
you
talked
about
on
the
bus.
4.
The
professor
________
you
are
waiting
for
has
come.
5.
Football
is
a
game
_______is
liked
by
most
boys.
6.
He
likes
to
read
books
________
are
written
by
foreign
writers.
7.
This
is
the
pen
_______
he
bought
yesterday.
8.
We’ll
go
to
hear
the
famous
singer
_______
we
have
often
talked.
9.
Where
is
the
man
_________
I
saw
this
morning?
10.
The
season_________
comes
after
spring
is
summer.
I
visited
a
scientist
________
name
is
known
all
over
the
country.
12.
He
has
a
friend
______
father
is
a
doctor.
13.
I
once
lived
in
the
house
_____
roof
has
fallen
in.
14.
I
still
remember
the
day
_____
I
first
came
to
this
school.
15.
The
time
_______
we
got
together
finally
arrived.
16.
Shanghai
is
the
city
______
I
was
born.
17.
The
house
______
I
lived
ten
years
ago
has
been
pulled
down.
18.
Please
tell
me
the
reason
______
you
missed
the
plane.
19.
The
reason
____
he
was
punished
is
unknown
to
us.
20.
All
the
people
______are
present
burst
into
tears.
21.
There
are
about
seven
million
people
taking
part
in
the
election,
most
of
_______
are
well
educated.
22.
He
succeeded
in
the
competition,
_____
made
his
parents
very
happy.
23.
The
school
______
he
once
studied
is
very
famous.
24.
Tomorrow
I’ll
bring
here
the
magazine
_______
you
asked.
25.
This
is
the
boy
________I
played
tennis
with
yesterday.
三、句子翻译。
1.这就是救了那个孩子命的医生。
2.正在跑步的那个人是我的叔叔。
3.我喜欢可以随之而唱的音乐。
4.住在隔壁的那个女的是一名教师。
5.你是我在这儿遇见的最后一个人。
参考答案
A.
主语与run(延伸)是主动关系，所以用现在分词。Those指街道，所以不用who而用that来引导定语从句。
2.
B.
因为在此题中where引导定语从句，表示“在这种种况下”，与in
which相当。
3.A.
因为先行词是Beijing而不是this
autumn所以用where引导定语从句。
4.
B.
答案B是省略了关系代词that的定语从句，另外，to后还省略了动词原形paint。
5.
C.
因为of
which引导定语从句，并在从句中作定语。of
which
the
telephone
number
=
whose
telephone
number。
D.
因为这是个非限制性定语从句，先行词是前面一句话的内容。
B.
因为表示“阶段、程度、地步”的the
point在定语从句中作地点状语，所以用where引导定语从句。
B.
因为先行词是research
centers并在定语从句中作状语，所以用where。
C.
因为当先行词是表示事物的all,
little,
few,
much,
anything,
everything,
nothing等时，多用that引导定语从句。
因为先行词是the
time，且在定语从句中作状语，所以用when引导。此题的先行词与定语从句被主句谓语分开了，要善于辨别。
B.
先行词是Taiwan
is
a
part
of
China整个主句，一般由as或which引导定语从句，但which引导的定语从句只能放在主句之后，另外，as有“正如”之意，而which没有，所以用as。顺便说说，原句改为：It
is
known
to
everybody
that
Taiwan
is…=
What
is
known
to
everybody
is
that
Taiwan
is…
A.
两空都是考查定语从句，先行词分别是the
day和Shen
Zhou
V
was
launched,
the
day在定语从句中作状语，用when引导；后句是非限制性定语从句，不能用that，要用which。
A.
因为替代不可数名词
(the
bread)
只能用that，排除B和D；又因为先行词that
(the
bread)在定语从句中作buy的宾语，用which，所以选A。
D.
当定语从句的先行词前有such,
so,
as等词语时，由as引导，并且as在定语从句中作主语或宾语，as在此题中作dream
of的宾语。注意：在表示“如此…以致…”的such
/so…that…结构中，that不作任何句子成份。
B.
考查非限制性定语从句，all
of
whose
homes
=
all
of
their
homes他们所有的房子。
D.
因为先行词是前面整个句子，且在从句中作主语，所以用which。of
course是插入语。
D.
将疑问句改为陈述句：this
research
center
is…显然缺少先行词，必须加上代词the
one来作先行词，又因定语从句不缺主语或宾语，所以用关系副词where。假若在this后加the，就选where，请想想这是为什么。
A.
因为先行词是the
days，并在定语从句中作状语。
B.
当先行词前有so时，用as引导定语从句，as在从句中作主语或宾语。假若在lift后加上it，答案就是that了，请想想这是为什么。
20.
C.
因前后均的句子，必须要选连词，排除B和D；又因在介词后不能用that来引导定语从句，所以选C。during
which
time在那段时间里。
一、1-5：ADDBB
6-10：BCAAB
二、
who
2.
who
3.
whom
4.
whom
5.
which
6.
which
7.
which
8.
about
whom
9.
whom
10.
which
11.
whose 12.
whose
13.
whose
14.
when 15.
when
where 17.
where
18.
why
19.
why
20.
that
21.
whom 22.
which 23.
where
24.
that
25.
whom
三、This
is
the
doctor
who
saved
the
boy’s
life.
The
man
who
is
running
is
my
uncle.
I
like
the
music
that
I
can
sing
along
with.
The
woman
who
lives
next
door
is
a
teacher.
You
are
the
last
person
that
I
meet
here.
