外研版（2019）选择性必修一：Unit3 Faster, higher, stronger Using language（18张ppt）

(共17张PPT)
Unit
3
Faster,
higher,
stronger
Using
language
Contents
Part
1
Studying
the
rules
Part
2
Practice
Read
and
pay
attention
to
the
words
in
red.
What
do
they
function
1．Earning
enough
money
to
support
her
son’s
treatment
was
her
goal.
2．Swimming
without
arms
sounds
difficult
for
me.
1．v. ing形式作主语表示抽象的经常性的意义。
Reading
aloud
is
very
important
for
us
to
learn
a
foreign
language.
大声朗读对我们学习一门外语是很重要的。
Going
to
bed
early
and
getting
up
early
is
considered
to
be
a
good
habit.
早睡早起被认为是一种好习惯。
2．v. ing形式作主语时常后置，此时须用it作形式主语，用形容词或名词作表语，但这类形容词和名词较少，常见的形容词有：enjoyable，good，hard，worthwhile，nice，useless，worth等。常见的名词或名词短语有：no
use，no
good，fun，hard
work，a
hard/difficult
job，a
wonder，a
waste
of
time等。
The
dictionary
is
of
great
use.
It
is
worth
buying.
这本词典很有用，值得买。
It's
no
good
waiting
here.
Let's
go
home.
在这儿等没好处，咱们回家吧。
动名词和不定式做主语的相同点
1.不定式短语和动名词做主语时，常常为了保持句子的平衡，用it来做形式主语，如：
It
is
not
easy
to
learn
English
well.
It
is
no
use
asking
him
for
help.
2.如果主语用了不定式,表语和宾语也要用不定式;主语用了动名词,表语和宾语也要用动名词,这在英语中称为对称性,如:
To
see
is
to
believe.
=
Seeing
is
believing.
(眼见为实)
It
is
better
to
stay
home
than
_A__
out.
A.
to
go
B.
going
C.
go
D.
gone
动词不定式与动名词的区别：
1．作主语
一般情况下,不定式与动名词作主语可以互换,也常常可以用it充当形式主语,而把不定式和动名词放在句子的后半部分。但二者也有区别:
不定式常常指某次具体的、将要发生的行为;
动名词则表示一般的、抽象的行为。
例如:
To
save
money
now
is
not
easy.
现在攒钱不容易。
Saving
money
is
a
good
habit.
攒钱是个好习惯。
动名词做主语往往表示普通的、一般的行为；
不定式做主语常表示某次具体的行为。
例如：
Collecting
information
about
children’s
health
is
his
job.
收集有关儿童健康的信息是他的工作。
It’s
necessary
to
discuss
the
problem
with
an
experienced
teacher.
与一位有经验的老师讨论这个问题是有必要的。
2、常用不定式做主语的句型有：
（1）It’s
difficult
(important,
necessary)
for
sb.
to
do
（2）It’s
kind
(good,
friendly,
polite,
careless,
rude,
cruel,
clever,
foolish,
brave)
of
sb.
to
do.
3、常用动名词做主语的句型有：
It’s
no
good
(use,
fun)
doing.
It’s
(a)
waste
of
time
one’s
doing.
(1)动名词作主语通常表示抽象动作；而不定式作主语表示具体动作。
Smoking
is
prohibited(禁止)here．
这里禁止抽烟。(抽象)
It
is
not
very
good
for
you
to
smoke
so
much．
你抽这么多烟对你身体很不好。(具体)
(2)动名词作主语时，通常用以表示一件已知的事或经验。
不定式短语通常用来表示一件未完成的事或目的。
Climbing
mountains
is
interesting．
爬山很有趣。(经验)
Driving
a
car
during
the
rush
hour
is
tiring．
在高峰时刻开车令人厌烦。(经验)
(3）不定式做主语，一般用it当形式主语，把作主语的不定式短语后置。
It
took
me
only
five
minutes
to
finish
the
job.

Reading
telling
My
playing
arriving
Practice
Working
saying
Their
watching
spending
However
between
As
talking
Later
scolding
crying
telling
III.
Talk
about
sports
with
your
partner
using
–ing
as
subject.
Jogging
three
times
a
week
makes
me
stronger.
Playing
badminton
was
my
hobby,
but
recently
I’ve
had
little
time
to
do
that.
IV.
Share
your
opinions
on
sports
events/stars/teams/….
Thank
you