目的状语：To
get
there
in
time,
he
drove
his
car
very
fast.
结果状语：He
searched
the
room
only
to
find
nothing.方式状语：暂时没想起来。表语：To
be
kind
to
the
enemy
is
to
be
cruel
to
the
people.宾补：Father
will
not
allow
us
to
play
on
the
st//www.souquanme.comreet.定语：Have
you
anything
to
be
taken
to
your
sister?
原因状语：I'm
glad
to
see
you.

用不定式造句例句有：

He decided obuWlgGcto work hard. 他决定努力学习。She hopes to study abroad one day.她希望有一天能在国外学习。He got early to arrive on time. 他早起是为了准时抵达。The meeting to be held next week will be very interesting. 下周将要举行的会议将会十分有趣。He appeals to people to protect the environment. 他呼吁人们保护环境。He went on to walk after a short rest. 短暂休息以后他继续走路。He was told not to eat spicy food. 他被告知不要吃辛辣的食物。He told an interesting story to make the atmosphereobuWlgGc better. 他讲了一个有趣的故事让气氛更好。She was prepared to go. 她准备好要走了。Jack used to take a walk after dinner. 杰克曾经常常在晚饭后散步。

很简单，to
+
动词原形
就是动词不定式。其中to叫做动词不定式符号，有时可以//www.souquanme.com省略。
动词不定式除了不可以做谓语动词外，几乎其他句子成分都可以做。试看下面几个例子：
1.
i
want
to
have
some
coffee.
这个句子中to
have
some
coffee这个动词不定式是做want的宾语
2.to
learn
english
well
is
not
easy.该句中
动词不定式
to
learn
english
well
是做主语，不过这个句子通常会借助形式主语it，而把真正的主语to
learn
english
well放到www.souquanme.com后面去，变成常见句型：it
is
not
easy
to
learn
english
well.
3.
i
made
him
cry.
其中cry
是省略了不定式符号to
的动词不定式，做的是him这个宾语的补足语。
4.
i
want
something
to
drink.
这个句子中动词不定式to
drink
做的是something的定语，something
to
drink意思是一些喝的东西