现在进行时的形式
现在进行时由
be
的现在式
+
现在分词构成。
i
am
you
are
he
is
she
is
it
is
we
are
you
are
they
are
缩写形式如下
i'm
you're
he's
she's
it's
we're
you're
they're
拼写法：动词后面如何加
-ing
wait/waitng
大多数动词后可直接加-ing，而不需改变动词的拼写法。
如beat/beating,
carry/carrying,
catch/catching,
drink/drinking,
enjoy/enjoying,
hurry/hurrying。
如果动词以-e结尾，则去掉-e，再加-ing，如
come/coming,
have/having,
make/making,
ride/riding,
use/using。但以-ee
结尾的动词和age,singe两个动词除外：agree/agreeing,
see/seeing,
age/ageing,
singe/singeing。
run/running
如果动词只有一个
元音字母，而其后跟有一个
辅音字母时，
则将此辅音字母双写，再加-ing，如：hit/hitting,
let/letting,
put/putting,
run/running,
sit/sitting。
begin/beginning
如果动词有两个音节，且重音在第二个音节上，则末尾的
辅音字母须双写，再加-ing，如
for'get/forgetting,
pre'fer/
preferring,
up'set/upsetting。
试比较
'benefit/benfiting,
'differ/differing,
'profit/profiting,
这些词的重音在第一个
音节上，因此其末尾的辅音字母不双写。注意在英国英语中
'label/labelling,
'quarrel/quarrelling,
'signa/signalling,
'travel/travelling等例外情况，但在
美国英语中则不双写，如
labeling,
quarreling,
signaling,
traveling。
以
-ic
结尾的动词，应先把
-ic
变为
-ick，再加
-ing，
如
panic/panicking,
picnic/picnicking,
traffic/
frafficking。
lie/lying
其他如
die/dying,
tie/tying均同此。
现在进行时的用法
说话时正在进行的动作
现在进行时表示说话时正在进行的动作或事件。
往往与
now,
at
the
moment,
just
等副词连用，以示强调：
someone's
knocking
at
the
door.
can
you
answer
it
what
are
you
doing
i'm
just
tying
up
my
shoelaces.
he's
working
at
the
moment,
so
he
can't
come
to
the
telephone.
正在进行着的动作皆被视为未完成的动作：
he's
talking
to
his
girlfriend
on
the
phone.
可用
still
一词强调动作的持续性
he's
still
talking
to
his
girlfriend
on
the
phone.
暂时情况
现在进行时可用来表示不会长期发生的动作或情况，或
被认为在短期内正在进行的动作或存在的情况：
what's
your
daughter
doing
these
days
she's
studing
english
at
durham
university.
这种情况不一定在说话时发生：
don't
take
that
ladder
away.
your
father's
using
it.
（他父亲现在不一定在用）
she's
at
her
best
when
she's
making
big
decisions.
暂时发生的事情也可以是在说话时正在进行着：
the
river
is
flowing
very
fast
after
last
night's
rain.
现在进行时也可以用来表示当前的动向：
people
are
becoming
less
tolerant
of
smoking
these
days.
事先计划好的动作：指将来
现在进行时（以及
be
going
to
）可以表示为将来
安排好的活动和事件；除在上下文中意思清楚者外，通常需要
一个表示时间的状语：
we're
spending
next
winter
in
australia.
用arrive,
come,
go,
leave
等动词的现在进行时描写行
程安排，也通常有“将到达”和“将离去”的意思：
he's
arriving
tomorrow
morning
on
the
13:27
train.
用现在进行时表示说话时正在进行的动作时，可用状语
和上下文使语义不致含混：
look!
the
train's
leaving.
（即火车实际上正在开动。）
重复的动作
副词
always（表示“屡次”），constantly,
continually,
forever,
perpetually,
repeatedly
等等可与进行时连用，表示
不断重复的动作：
she's
always
helping
people.
某些状态动词带有
always
等词亦可用进行时：
i'm
always
hearing
strange
stories
about
him.
当现在进行时表示某事发生的次数过多时，则有时含有
抱怨的意思：
our
burglar
alarm
is
forever
going
off
for
no
reason.本回答被提问者采纳