Unit4 Cyberspace Grammar学案（含答案）

中小学教育资源及组卷应用平台
Unit4
Cyberspace
虚拟语气
学案
英语虚拟语气：表示所说的不是事实，或者是不可能发生的情况，是一种假设愿望或建议等。
If
条件句
Compare
the
sentences
and
find
out
the
rules:
1)
If
I
am
not
invited,
I
won’t
go
to
their
party.21cnjy.com
If
you
don’t
lose
heart,
you
will
succeed.
2)
If
I
were
a
bird,
I
would
fly
in
the
air.
If
she
had
time,
she
would
go
with
you.
3)
If
he
had
(?http:?/??/?www.21cnjy.com?)taken
my
advice,
he
would
have
succeeded
in
the
competition.【来源：21·世纪·教育·网】
If
I
had
seen
the
film,
I
would
have
told
you
about
it.
2-1-c-n-j-y
4)
If
it
rained
/w
(?http:?/??/?www.21cnjy.com?)ere
to
rain
tomorrow,
the
football
match
would
be
put
off.
If
he
should
come
here
tomorrow,
I
would
talk
with
him.
用法总结：
?
条件状语从句
主
句
与现在事实相反
动词过去式(be
用
were)
would
/
should
/
might
/
could
+
动词原形
与过去事实相反
had
+动词过去分词
would
/
should
/
might
/
could
have
+
动词过去分词
与将来事实相反
动词过去式(be用were)should
+
动词原形were
to
+
动词原形
would
/
should
/
might
/
could
+
动词原形
即时训练：
1）If
you
_had
taken_
(take)
my
advice,
you
__wouldn’t
have
failed__
(not
fail)
in
the
exams
last
term.
2）If
it
rained/were
to
rain/should
rain_
(rain)
tomorrow,
the
sports
meeting
would
be
put
off
(put
off).
3）If
everyone
_knew__(know)first
aid,
many
lives
__would
be
saved___(save).21教育网
4）If
I
had
money,
I
(buy)a
new
car
now.www.21-cn-jy.com
5）If
I
(arrive)
there
earlier,
I
would
have
met
Mr.
Li.2·1·c·n·j·y
6)
If
it
(rain)tomorrow,
I
would
stay
at
home.【出处：21教育名师】
补充1：If
条件句中含有_were/should/had_，省略
if
,
were/should/had提前。
eg1.
If
he
were
in
Beijing
now,
he
would
go
to
watch
the
game.【版权所有：21教育】
Were
he
in
Beijing
now,
he
would
go
to
watch
the
game.21教育名师原创作品
eg2.
If
he
should
come
tomorrow,
tell
him
to
ring
me
up.【来源：21cnj
y.co
m】
Should
he
come
tomorrow,
tell
him
to
ring
me
up.
eg3.
If
it
ha
(?http:?/??/?www.21cnjy.com?)d
not
been
for
her
teacher,
he
would
not
have
passed
the
exam
so
easily.
Had
it
not
been
(?http:?/??/?www.21cnjy.com?)for
her
teacher,
he
would
not
have
passed
the
exam
so
easily.
即时练习：
If
we
had
made
(?http:?/??/?www.21cnjy.com?)
a
great
effort,
we
might
have
succeeded.→
__Had
we
made
a
great
effort
,
we
might
have
succeeded.
2)
If
I
were
a
boy,
I
would
join
the
army.
→_Were_I
a
boy_,
I
would
join
the
army.21·世纪
教育网
补充2：有时会出现错综时间，即主从句不在同一时间段内发生，要分别表达。
eg1:
If
you
ha
(?http:?/??/?www.21cnjy.com?)d
followed
my
advice
yesterday,
you
would
be
fine
now.
21
cnjy
com
即时训练：
1）If
you
had
studi
(?http:?/??/?www.21cnjy.com?)ed
hard
before,
you
__would
be__
(be)a
college
student
now.
2）If
he
_hadn’t
followed__
(follow)
my
advice,
he
wouldn’t
do
it
much
better
like
this.
补充3：句中含有_but
for/without/or/otherwise__等词时，主句遵循if条件句的变化规则。
eg1:
But
for/with
(?http:?/??/?www.21cnjy.com?)out
(=if
it
had
not
been
for)
your
help,
we
would
have
lost
the
game.www-2-1-cnjy-com
eg2:
Without
computers,
we
could
not
share
so
much
information.
eg3:
He
telephoned
to
(?http:?/??/?www.21cnjy.com?)
inform
me
of
your
birthday
,
or
I
would
have
known
nothing
about
it
.
即时训练：
But
for
your
help,
we
couldn’t
have
finished(finish)
the
work.
I
might
have
given
your
more
help,
but
I
__was__
(be)
too
busy
then.
3）I
was
ill
that
(?http:?/??/?www.21cnjy.com?)day.
Otherwise,
I
___would
have
taken___
(take)
part
in
the
meeting.
经典真题汇编
Part1
填空
1.
If
you
(look
up)your
test
paper
carefully
before
handing
it
in,
you
would
have
made
fewer
mistakes.
2.
Thank
you
for
(?http:?/??/?www.21cnjy.com?)
all
your
hard
work
last
week.
I
don't
think
we
(manage)it
without
you.
3.
But
for
the
hel
(?http:?/??/?www.21cnjy.com?)p
of
my
English
teacher,
I
(win)the
first
prize
in
the
English
Writing
Competition.
4.
If
we
(take)
the
other
road,
we
might
have
arrived
here
in
time
for
the
meeting.
5.Had
I
known
about
th
(?http:?/??/?www.21cnjy.com?)is
computer
program,
a
huge
amount
of
time
and
energy
would__________(save).
6.
Maybe
if
I
(study)
science,
and
not
literature
then,
I
would
be
able
to
give
you
more
help.
7.
We
would
______
(put)
John's
name
on
the
race
list
yesterday
but
for
his
recent
injury.
8.
We
lost
our
way
in
(?http:?/??/?www.21cnjy.com?)that
small
village,
otherwise
we
would
(visit)
more
places
of
interest
yesterday.
9.
If
my
car
_____
more
reliable,
I
would
have
driven
to
Lhasa
instead
of
flying
last
summer.
10.
If
we
(make)enough
preparations,
the
conference
wouldn't
have
been
so
successful.
11.
Sorry,
I
am
too
(?http:?/??/?www.21cnjy.com?)
busy
now.
If
I
_____
time,
I
would
certainly
go
for
an
outing
with
you.
12.
We
would
(?http:?/??/?www.21cnjy.com?)
(call)
a
taxi
yesterday
if
Harold
hadn’t
made
us
a
ride
home.21
cnjy
com
13.
Had
they
(?http:?/??/?www.21cnjy.com?)
known
what
was
coming
next,
they
might
_____(have)
second
thoughts.
Part
2.
改错
If
he
was
my
friend,
I
would
support
him
without
hesitation.21世纪教育网版权所有
If
Mary
has
(?http:?/??/?www.21cnjy.com?)studied
medicine
at
school,
she
would
become
an
amazing
doctor
today.
But
for
his
generous
help,
I
would
not
realize
my
dream.
答案：
填空1.
had
looked
up
2.
(?http:?/??/?www.21cnjy.com?)could
have
managed3.
would
not
have
won
4.
had
taken5.
have
been
saved6.
had
studied7.
have
put
8.
have
visited
9.
had
been
10.
hadn't
made11.
had12.
have
called13.
have
had
改错1
was
改were
2.has
改had
3.
realize
改
have
realized21·cn·jy·com
21世纪教育网
www.21cnjy.com
精品试卷·第
2
页
（共
2
页）
HYPERLINK
"http://www.21cnjy.com/"
21世纪教育网(www.21cnjy.com)