1)以下动词后,只能接动名词作宾语,如:admit,appreciate,consider,delay,enjoy,finish,keep,imag
ine,mind,miss,practise,resist,risk,save,suggest,don't
mind,give
up,insist,on,
put
off等。
advise,allow,encourage,forbid,permit等动词后接动名词作宾语,或带不定式作宾语补足语。如:
Our
teachers
don't
permit
our
swimming
in
the
lake.
Our
teachers
don't
permit
us
to
swim
in
the
lake.
2)在下列情况下,一般要用不定式:
①hate,like,love前有would(should)时,如:I'd
like
to
have
a
cup
of
coffee.
②当谓语动词begin,continue,start等是进行式时,如:Thestudents
are
starting
to
work
on
the
di
fficult
maths
problem.
③begin,continue,start与know,understand等状态动词连用时,如:I
soon
began
to
understand
what
was
happening.
3)部分动词后接不定式或动名词时,意义差别较大,应根据句子语境选择使用。
①forget,remember,regret后接不定式,表示现在或未来的动作,接动名词表示动作已经发生。如:
Don't
forget
fo
post
the
letter
for
me.
Have
you
forgotten
meeting
her
in
Beijing
Airport?
Remember
to
close
the
windows
before
you
leave.
I
remember
writing
him
a
letter
a
year
ago.
We
regret
to
tell
you
that
all
of
you
are
not
invited
toattend
the
meeting.
They
regretted
ordering
these
books
from
abroad.
②mean
to
do
打算做某事
doing
意味着……
I
meant
to
catch
up
with
the
early
bus.
This
means
wasting
a
lot
of
money.
③try
to
do
设法尽力做某事
doing
试着做某事
You
should
try
to
overcome
your
shortcomings.
Try
working
out
the
physics
problem
in
another
way.
④stop
to
do
停下一件事去做另一件事(不定式作目的状语)
doing
停止做某事
On
the
way
to
the
airport,I
stopped
to
buy
a
paper.
You'd
better
stop
arguing
and
do
as
you
are
told.
⑤can't
help
doing
禁不住……
to
do不能帮助干……
They
couldn't
help
jumping
up
at
the
news.
Sorry
I
have
lots
of
work
to
do.So
I
can't
help
to
make
up
the
room
for
you.
⑥go
on
to
do
做不同的事或不同内容的事
doing
继续不停地做某事,指同一动作的继续
He
went
on
to
talk
about
world
situation.他接着又谈了世界形势。
We'll
go
on
fighting
so
long
as
there
is
oppression
inthe
world.
⑦leave
off
to
do
离开某地去干什么(目的状语)
doing停下某事
It's
time
to
leave
off
talking
and
to
start
acting.
They
left
off
to
go
fishing.
有些固定的词组后面跟的是固定的,比如want
to
do
something.
有些呢后面后面跟不一样的意思也就不一样,比如stop
to
do,stop
doing.前者是停下现在做的,去做另一件事,后者是停下现在正在做的事。
to
do,dong也有表示即将做和正在做的意思。集体好像没有什么动词必须跟
to
do,doing的。