Unit 10 If you go to the party, you'll have a great time! SectionA-3a-3c 课件(共18张PPT)

(共18张PPT)
Unit
10
If
you
go
to
the
party,
you'll
have
a
great
time!
Section
A
3a-3c
学习if引导的条件状语从句的用法
Learning
Objectives
根据课本内容，完成下列句子。
1.
我想我将会乘公共汽车去参加聚会。
I
_____
I’ll
take
the
bus
to
the
______.
2.
如果你那样做，你将会迟到。
If
you
_____,
_____
be
late.
3.
我想我将待在家里。
I
_____
_____
stay
at
home.
do
you’ll
think
party
think
I’ll
4.
如果你那样做，你将会觉得很抱歉。
If
you
____,
______
____
sorry.
5.
如果他们今天聚会，将会发生什么事？
_____
___
_______
if
they
_____
the
party
today?
6.
如果他们今天聚会，班里一半的学生将不会去。
If
they
______
the
party
today,
______
the
class
_______
come.
do
you’ll
be
What
will
happen
have
have
half
won’t
7.
我们应当要求人们带食物来吗？
Should
we
______
people
to
______
food?
8.
如果我们要求人们带食物来时，他们将会只带薯条和巧克力。
___
we
____
people
to
bring
food,
______
just
______
potato
chips
and
chocolate.
ask
bring
If
ask
they’ll
bring
Presentation
I
think
I’ll
take
the
bus
to
the
party.
If
you
do,
you’ll
be
late.
I
think
I’ll
stay
at
home.
If
you
do,
you’ll
be
sorry.
What
will
happen
if
they
have
the
party
today?
If
they
have
it
today,
half
the
class
won’t
come.
Should
we
ask
people
to
bring
food?
If
we
ask
people
to
bring
food,
they’ll
just
bring
potato
chips
and
chocolate.
[if引导的条件状语从句]
Grammar
focus
I
will
have
a
good
time
tomorrow.
I
will
go
to
the
party
tomorrow.
If
I
go
to
the
party
tomorrow,
I’ll
have
a
good
time.
合并
在句子中作条件状语的从句被称为条件状语从句。If引导一个条件状语从句当主句是一般将来时时,
if引导的从句必须用现在时来，表示将来可能发生的动作或存在的状态。
用法
if条件句的主句和从句的时态搭配一般有下面几种情况：
1．主句是______________，if从句用____________。
If
he
runs,
he'll
get
there
in
time.
如果跑的话，他就会及时赶到那儿。
I
will
tell
her
the
answer
if
she
asks
me.
如果她问我，我就会告诉她答案。
一般将来时
一般现在时
2．主句是含有may/might/can/must/should等情态动词的句子，if从句用一般现在时。
If
it
stops
snowing,
we
can
go
out.
如果雪停了，我们就可以出去。
If
you
want
to
lose
weight,
you
must/should
eat
less
bread.如果想减肥，你必须/应该少吃面包。
3．主句是祈使句，if从句用一般现在时。
Don't
go
to
play
football
if
you
don't
finish
your
homework.如果你没完成作业，就不要去踢足球。
[拓展]
if还可以译为“是否”，用来引导宾语从句。此时if和whether是同义词，可以互换。如果or
not放在whether所引导的从句句尾，则可以用if来替换。但当or
not紧跟在whether之后时，只能用whether。
She
asked
me
if/
whether
I
knew
Mike
(or
not)．
她问我是否认识迈克。
I
wonder
whether
or
not
he
will
come
to
my
party.
我想知道他是否会来参加我的聚会。
Fill
in
the
blanks
with
the
correct
forms
of
the
verbs
in
brackets.
3a
Dear
Su
Mei,
I
don’t
______
(know)
what
to
____
(do)
about
going
to
Mike’s
birthday
party
tomorrow
night.
My
parents
______
(think)
I
should
study
for
my
English
exam
next
week.
If
I
____
(go)
to
the
party,
they
_______
(be)
know
do
think
go
will
be
upset.
Mike
______
(tell)
us
to
wear
nice
clothes,
but
I
don’t
______
(have)
any.
If
I
_____(wear)
jeans,
I
________
(look)
the
worst.
Also,
I’m
not
sure
how
to
_____
(go)
to
the
party.
If
I
______
(walk),
it
__________
(take)
me
too
long.
If
I
________
(take)
a
taxi,
it
_________
(be)
too
expensive.
Can
you
give
me
some
advice
please?
Tina
told
have
wear
will
look
go
walk
take
will
take
will
be
3
2
1
To
go
or
not
to
go
What
to
wear
How
to
get
there
How
many
problems
does
Tina
meet
?
If
she
goes
to
the
party
,
her
parents
will
be
upset.
If
she
wears
jeans
,
she
will
look
the
worst
If
she
walks,
it
will
take
her
too
long.
If
she
takes
a
taxi,
it
will
be
expensive.
3b
Complete
the
sentences
using
your
own
ideas.
1.
If
I
get
up
late
tomorrow,
_______________
_____________________.
2.
If
I
don’t
finish
my
homework,
___________
_____________________.
the
school
bus
will
be
angry
my
teacher
I
will
miss
3.
If
I
don’t
get
enough
exercise,
____________
________________.
4.
I
will
not
have
enough
time
to
study
if
______
__________________________.
5.
I
will
not
make
any
friends
if
______________
________________________.
be
strong
computer
games
all
the
day
make
them
upset
I
play
I
won’t
I
always
I
think
I
will
go
to
the
movies
tonight.
If
I
go
to
the
movies,
I
won’t
finish
my
homework.
If
I
don’t
finish
my
homework…
3c
Write
a
story
with
your
group
on
a
piece
of
paper.
The
first
person
begins
the
story
with
“I
think
I
will…”
The
others
add
sentences
with
“if”.
Pass
the
paper
around
twice.
Then
read
the
story.
Summary