(共15张PPT)
Unit
10
If
you
go
to
the
party,
you’ll
have
a
great
time!
第一课时
R·八年级上册
Lead
in
Language
points
一、If引导的条件状语从句
1.
If意为“如果”，引导条件状语从句时，既可在
主句前，也可在主句后。若放在句首，从句后面
要加逗号与主句隔开。
Language
points
If
+…,
条
件
结
果
2.
句型结构：
从句
主句
I’ll
/
you’ll
+…
Language
points
3.
时态：
主句是一般将来时，从句一般现在时。
If
he
comes,
he
will
bring
his
violin.
Language
points
主句是有情态动词may/might/can/must/
should等句子，从句一般现在时。
If
you
want
to
lose
weight,
you
must
eat
less
bread.
Language
points
主句是祈使句，从句一般现在时。
If
you
are
not
strong
enough,
please
don’t
take
part
in
such
an
activity.
Language
points
4.
句型转换
（1）借助“祈使句+and/or
+句子（一般将来时
结构）”
来转换。其中，在句意上and表
示顺承；or表示转折，意为“否则”。
Language
points
If
you
work
hard,
you’ll
pass
the
exam
easily.
=Work
hard,
and
you’ll
pass
the
exam
easily.
=Work
hard,
or
you
won’t
pass
the
exam
easily.
Language
points
（2）借助without或with来转换条件状语从句。
If
there
is
no
water,
fish
will
die.
=Fish
will
die
without
water.
Chain
game
If
I
have
a
party,
I
will
go
shopping.
If
I
go
shopping,
I
will
buy
a
lot
of
food.
If
I
buy
a
lot
of
food,
I
will
eat
it.
If
I
eat
it,
I
will/won’t
…
If
I
am
free
tomorrow,
I
will
have
a
party.
Chain
game
If
I
visit
my
friend,
I
will
bring
a
gift.
If
I
bring
a
gift,
My
friend
will
be
very
happy.
If
Mr
Li
is
very
happy,
we
will
play
games.
If
we
play
games,
I
will/won’t
…
If
I
am
free
today,
I
will
visit
my
friend.
Practice
If
it
_____
tomorrow,
we’ll
go
to
the
park.
A.
isn’t
rain
B.
doesn’t
rain
C.
will
rain
D.
don’t
rain
I
_____
with
you
if
I’m
free.
A.
go
B.
will
go
C.
went
D.
going
Class
summary
Unit
10
If
you
go
to
the
party,
you’ll
have
a
great
time!
1.
I
think
I’ll
take
the
bus
to
the
party.
2.
If
you
do,
you’ll
be
late.
3.
What
will
happen
if
they
have
the
party
today?
4.
If
they
have
it
today,
half
the
class
won’t
come.
Thank
you!
