百科狗英语中do和to do的用法
复制粘贴的不要给他分！
to
do在做状语的时候表示目的。to
wake
up
early
next
morning,
he
set
the
alarm.
To
do
的被动形式是to
be
done.
完成形式是to
have
done,进行形式是to
be
doing.
比如he
seems
to
have
finished
the
task.
He
seems
to
be
killed
last
night.
He
seems
to
be
waiting
for
his
girlfriend.
To
do还可以做原因状语，i'm
glad
to
meet
you.
To
do还可表结果，与doing表示的结果不同，doing做结果状语是意料之中的结果，to
do
做结果状语是否意料之外的话结果。
比如
he
hurried
to
the
airport,
only
to
find
that
the
star
had
left.
Basketball
is
being
played
in
more
than
80countries,
making
it
the
most
popular
games
in
the
world.
你好！
do和todo放在句首的区别
do是动词或助动词，to do是不定式。
1. do放在句首，或者是祈使句，如 Do me a favour! 或者是一般疑问句，Do you understand？
2. To do 放在句首可以做主语，如 To do it well is not easy。
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