内容正文:
Every
man
has
his
weak
side.
人人都有弱点。 采蜜角 63
Part
B Lets
talk
Wu
Binbin:
Mr
Jones,
how
can
I
get
to
the
Fuxing
Hospital?
Mr
Jones:
Take
the
No.57
bus
over
there.
Wu
Binbin:
Thanks.
Wow!
So
many
pictures
of
bikes!
Mr
Jones:
Theyre
from
my
cousin
in
the
USA.
Wu
Binbin:
Whats
this?
Mr
Jones:
A
helmet.
In
the
USA
people
on
bikes
must①
wear
one.
Wu
Binbin:
I
see.
Oh,
the
bus
is
coming!
Bye,
Mr
Jones.
Mr
Jones:
Hey,
dont
go
at
the
red
light!②
Wu
Binbin:
Oh,
right!
Thanks.
I
must
pay
attention
to
the
traffic
lights!
[抄一抄]
[想一想]
1.
Can
Wu
Binbin
get
to
the
hospital
by
bus?
2.
What
must
people
do
on
bikes
in
the
USA?
译文见本书P90
一、
must的用法
must是情态动词,含有“必须、一定”的意思。表示说话人认为有必要做某事,或命令、要求
别人做某事。在句子中must要放在其他动词前面一起构成谓语来使用。句型结构为“主语+
must
+动词原形(+其他).”。must的否定形式是must
not,可缩略为mustnt。如:
You
must
look
left
and
right
before
you
cross
the
road.
过马路前,你一定要向左右看。
You
mustnt
run
by
the
pool.
你不能在泳池边跑。
辨析:
must和have
to
must多表示因主观需要或因责任感的驱使有必要、有义务去做某事,意为“必须”,没有人称
和时态的变化。have
to多表示由于客观存在的环境所限而去做某事,意为“不得不”,有人称和
时态的变化。如:
We
must
be
there
on
time.
我们必须准时到那儿。
I
have
to
do
my
homework
now.
我现在不得不做我的家庭作业。
三 预学储备
课文朗读 答案讲解
采蜜角 Every
minute
counts.
分秒必争。64
[练一练]
1.
用所给词的适当形式填空。
(1)
The
boy
must
(pay)
attention
to
the
cars.
(2)
My
mother
(have)
to
wash
the
clothes
now.
( )2.
—
Must
I
finish
the
work
now? —
No,
you
.
A.
cant B.
may
not C.
neednt
二、
Dont开头的祈使句
句型结构为“Dont
+动词原形(+其他)!”。此句型为祈使句的否定形式,通常用来提醒或
警告别人不要做某事。祈使句的主语一般是第二人称(you),所以通常都省略主语。如:
Dont
run
on
the
bus!
别在公共汽车上跑!
拓展:祈使句的分类:
1.
Be型:
Be
+表语(名词/形容词)(+其他).如:
Be