高中英语新人教版第二单元Section
Ⅰ重点句型讲解
句式1
The
government,however,does
not
intend
to
stop
the
protection
programmes,since
the
threats
to
the
Tibetan
antelope
have
not
yet
disappeared.然而,政府并不打算停止这些保护项目,因为对藏羚羊的威胁依然存在。
句式剖析
本句是复合句,since因为,既然,引导原因状语从句,对前面主句进行解释。
考点提炼
since引导的原因状语从句
(1)since引导原因状语从句,位于主句之前或之后,表示已知的、
显然的理由,通常翻译成“既然”,与now
that可互换,
语气比because弱。
Since
you
are
free
today,you
had
better
help
me
with
my
mathematics.
既然今天你有空,
你最好帮我补习数学。
We
thought
that,since
we
were
in
the
area,we’d
stop
by
and
see
them.
我们想,既然到了这个地方,就该顺便去看看他们。
(2)seeing
(that)(由于,鉴于),
now
(that)(既然),
considering
(that)(考虑到),
in
that(因为)等连词词组,也引导原因状语从句。
Seeing
that
you
are
on
a
diet,we
won’t
have
dessert.
由于你在节食,我们就不吃甜食了。
Now
(that)
you
are
grown
up,you
should
not
rely
on
your
parents.
既然你长大了,
就不应该依靠你的父母了。
Considering
(that)
everybody
is
here,let’s
begin
our
discussion.
考虑到大家都到了,
我们就开始讨论吧。
归纳拓展
since引导的时间状语从句,表示“自从”,从句时态常用一般过去时,主句时态用现在完成时或现在完成进行时。
I
have
been
missing
her
since
she
left.自从她离开我就一直很想念她。
It
has
been
almost
five
years
since
I
taught
high
school
students.
我不教高中已经大概有五年了。
易混辨析since/because/as/for
易混词
区别
since
表示已知的理由,语气比because弱
because
语气最强,表示因果关系,通常用来回答由
why
引导的疑问句
as
as与since用法类似,但比since语气稍弱
for
属于并列连词,由它引导的分句表示补充说明性的理由,通常只能置于句末,且必须用逗号与前面的分句隔开
经典例题
1.单句写作
(1)既然这个方法不行,我们试试另一个。(since)
,let’s
try
another.
(2)由于她是新来的,可能需要一些帮助。(as)
She
may
need
some
help
.
(3)他必须努力工作,因为他要养家糊口。(for)
He
has
to
work
hard,
.
(4)他们老是嘲笑我,因为我长得丑。(because)
They
were
laughing
at
me
.
2.改为同义句
Since
you
are
here,you’d
better
stay.
→
you
are
here,you’d
better
stay.
3.单句语法填空
(1)I
(change)
my
job
five
times
since
I
was
left
school.
(2)It
is
three
years
since
he
(smoke).
(3)As
is
reported,it
is
100
years
Qinghua
University
was
founded.
(4)Since
the
time
humankind
started
gardening,we
(try)
to
make
environment
more
beautiful.
句式2
Only
when
we
learn
to
exist
in
harmony
with
nature
can
we
stop
being
a
threat
to
wildlife
and
to
our
planet.只有当我们学会与自然和谐相处,我们才不会成为野生动物和地球的威胁。
句式剖析
本句是一个复合句。Only
when
we
learn…位于句首,主句can
we
stop…是部分倒装句。
考点提炼
“only+状语”结构引起的部分倒装
当only置于句首修饰做状语的副词、介词短语或if,when,because引导的状语从句时,句子要用部分倒装,即把助动词、情态动词或be动词提到主语前面。
Only
then
did
he
realize
that
he
was
not
fit
for
the
job.
只有那时他才意识到他不适合做这项工作。(“only+介词短语”位于句首)
Only
by
shouting
at
the
top
of
his
voice
was
he
able
to
make
himself
heard.
只有通过大声叫喊,他才能被听到。(“only+副词”位于句首)
Only
when
he
returned
did
we
find
out
the
truth.
只有当他回来时,我们才能查明事实真相。(“only+副词”位于句首)
特别提醒
only强调主语,句子不必倒装。
归纳拓展
(1)在以never,little,hardly,not,seldom,on
no
account(决不),at
no
time(决不)等否定副词或短语开头的句子中,采用部分倒装结构。
(2)在使用so…that…句式时,若
“so+形容词/副词
”放在句首,主句用部分倒装句。
经典例题
1.单句写作
(1)只有用这种方法你的英语水平才能提高。
Only
in
this
way,
.
(2)只有那时我才意识到健康的重要性。
Only
then
.
(3)当莉莉走进办公室的时候她才意识到她把合同忘在了家里。
Only
when
Lily
walked
into
the
office
that
she
had
left
the
contract
at
home.
(4)只有你才能决定你的命运。
your
destiny.
2.单句语法填空
(1)So
loudly
he
speak
that
even
people
in
the
next
room
could
hear
him.
(2)Only
after
talking
to
two
students
did
I
(discover)
the
truth. 高中英语新人教版第二单元Section
Ⅰ重点句型讲解
句式1
The
government,however,does
not
intend
to
stop
the
protection
programmes,since
the
threats
to
the
Tibetan
antelope
have
not
yet
disappeared.然而,政府并不打算停止这些保护项目,因为对藏羚羊的威胁依然存在。
句式剖析
本句是复合句,since因为,既然,引导原因状语从句,对前面主句进行解释。
考点提炼
since引导的原因状语从句
(1)since引导原因状语从句,位于主句之前或之后,表示已知的、
显然的理由,通常翻译成“既然”,与now
that可互换,
语气比because弱。
Since
you
are
free
today,you
had
better
help
me
with
my
mathematics.
既然今天你有空,
你最好帮我补习数学。
We
thought
that,since
we
were
in
the
area,we’d
stop
by
and
see
them.
我们想,既然到了这个地方,就该顺便去看看他们。
(2)seeing
(that)(由于,鉴于),
now
(that)(既然),
considering
(that)(考虑到),
in
that(因为)等连词词组,也引导原因状语从句。
Seeing
that
you
are
on
a
diet,we
won’t
have
dessert.
由于你在节食,我们就不吃甜食了。
Now
(that)
you
are
grown
up,you
should
not
rely
on
your
parents.
既然你长大了,
就不应该依靠你的父母了。
Considering
(that)
everybody
is
here,let’s
begin
our
discussion.
考虑到大家都到了,
我们就开始讨论吧。
归纳拓展
since引导的时间状语从句,表示“自从”,从句时态常用一般过去时,主句时态用现在完成时或现在完成进行时。
I
have
been
missing
her
since
she
left.自从她离开我就一直很想念她。
It
has
been
almost
five
years
since
I
taught
high
school
students.
我不教高中已经大概有五年了。
易混辨析since/because/as/for
易混词
区别
since
表示已知的理由,语气比because弱
because
语气最强,表示因果关系,通常用来回答由
why
引导的疑问句
as
as与since用法类似,但比since语气稍弱
for
属于并列连词,由它引导的分句表示补充说明性的理由,通常只能置于句末,且必须用逗号与前面的分句隔开
经典例题
1.单句写作
(1)既然这个方法不行,我们试试另一个。(since)
,let’s
try
another.
(2)由于她是新来的,可能需要一些帮助。(as)
She
may
need
some
help
.
(3)他必须努力工作,因为他要养家糊口。(for)
He
has
to
work
hard,
.
(4)他们老是嘲笑我,因为我长得丑。(because)
They
were
laughing
at
me
.
2.改为同义句
Since
you
are
here,you’d
better
stay.
→
you
are
here,you’d
better
stay.
3.单句语法填空
(1)I
(change)
my
job
five
times
since
I
was
left
school.
(2)It
is
three
years
since
he
(smoke).
(3)As
is
reported,it
is
100
years
Qinghua
University
was
founded.
(4)Since
the
time
humankind
started
gardening,we
(try)
to
make
environment
more
beautiful.
参考答案
1.(1)Since
this
method
doesn’t
work
(2)as
she’s
new
(3)for
he
wants
to
support
his
family
(4)because
I
was
ugly
2.Now
that
3.(1)have
changed (2)
smoked
(3)since (4)have
been
trying
句式2
Only
when
we
learn
to
exist
in
harmony
with
nature
can
we
stop
being
a
threat
to
wildlife
and
to
our
planet.只有当我们学会与自然和谐相处,我们才不会成为野生动物和地球的威胁。
句式剖析
本句是一个复合句。Only
when
we
learn…位于句首,主句can
we
stop…是部分倒装句。
考点提炼
“only+状语”结构引起的部分倒装
当only置于句首修饰做状语的副词、介词短语或if,when,because引导的状语从句时,句子要用部分倒装,即把助动词、情态动词或be动词提到主语前面。
Only
then
did
he
realize
that
he
was
not
fit
for
the
job.
只有那时他才意识到他不适合做这项工作。(“only+介词短语”位于句首)
Only
by
shouting
at
the
top
of
his
voice
was
he
able
to
make
himself
heard.
只有通过大声叫喊,他才能被听到。(“only+副词”位于句首)
Only
when
he
returned
did
we
find
out
the
truth.
只有当他回来时,我们才能查明事实真相。(“only+副词”位于句首)
特别提醒
only强调主语,句子不必倒装。
归纳拓展
(1)在以never,little,hardly,not,seldom,on
no
account(决不),at
no
time(决不)等否定副词或短语开头的句子中,采用部分倒装结构。
(2)在使用so…that…句式时,若
“so+形容词/副词
”放在句首,主句用部分倒装句。
经典例题
1.单句写作
(1)只有用这种方法你的英语水平才能提高。
Only
in
this
way,
.
(2)只有那时我才意识到健康的重要性。
Only
then
.
(3)当莉莉走进办公室的时候她才意识到她把合同忘在了家里。
Only
when
Lily
walked
into
the
office
that
she
had
left
the
contract
at
home.
(4)只有你才能决定你的命运。
your
destiny.
2.单句语法填空
(1)So
loudly
he
speak
that
even
people
in
the
next
room
could
hear
him.
(2)Only
after
talking
to
two
students
did
I
(discover)
the
truth.
参考答案
1.(1)can
you
improve
your
English
(2)did
I
realize
the
importance
of
health
(3)did
she
realize
(4)Only
you
can
decide
2.(1)did (2)discover
