③在表示“希望、打算”等动词（如hope, expect, intend, mean,
want等）的过去式后，可接动词不定式的完成式来表示没有实现的动作。
I
intended to have called on you, but was prevented from doing so.我原想来拜访你的，但没来成。
I
expected to have met him here last night.我以为昨天晚上能在这里见到他。（但没做到）
We meant
to have stayed there a week.我们原打算在那儿呆一个星期的。
I wanted
to have dropped her a line, but forgot to do so.我原想写一封信给她，但忘记了。
提示：
表示“原打算、原以为”还可以用这类动词的过去完成时来表达。
I had
intended to call on you.我原想来拜访你的。
I had
expected to meet him here last night.我原以为昨天晚上能在这里见到他的。
We had
meant to stay there a week.我们原打算在那儿呆一个星期的。
2．作介词的宾语
不定式可以作介词but和except的宾语。
The
teacher made no comments except to tell him to work hard.老师除了叫他努力学习外，未做任何评价。
He had
no choice but to sit there as usual. 他没有什么选择，只好像往常一样坐在那儿。
There is
nothing we can do but wait patiently. 我们只能耐心等待。
3．作形容词的宾语
不定式作形容词的宾语有两种句型，一个是句子的主语是不定式的逻辑主语，另一个是句子的主语是不定式的逻辑宾语。
①句子的主语是不定式的逻辑主语。这类形容词有able,
afraid, angry, anxious, careful, clever, content, cruel, determined,
disappointed, eager, foolish, fortunate, frightened, happy, impatient, glad,
lucky, naughty, prepared, proud, ready, slow, shocked, sorry, surprised,
willing等。
I am
sorry to say that he is going from bad to worse. 很遗憾，他的情况每况愈下
She was
not content to live a quiet life in a small town.她不满足在一个小镇里过默默无闻的生活。
John was
happy to be given the job.约翰得到这份工作很高兴。
②句子的主语是不定式的逻辑宾语。这类形容词有easy,
hard, cheap, expensive, dangerous, difficult, funny, fit, impossible,
interesting, nice, pleasant, simple, strange, useful等。
This
problem is easy to solve.这个问题很容易解决。
The
water is not fit to drink.这水不适于饮用。
She is
hard to get along with.她这个人很难相处。
注意：在这种结构中，如果不定式是不及物动词，则必须加上结构或含义所需的介词。
The
river is dangerous to swim in.在这条河里游泳很危险。
A spring
mattress is comfortable to sleep on.席梦思床垫睡上去很舒服。
D．动词不定式作宾语补足语
不定式可以在“主语+谓语+宾语+宾语补足语”句型中充当宾语补足语。在这一句型中，宾语是动词不定式的逻辑主语。
1．在表示感觉的动词后作宾语补足语，并且不定式都不带to。这类动词有：see,
hear, feel, watch, notice, observe, look at, listen to等。
I heard
them sing yesterday.昨天我听见他们唱歌了。
Did you
see him go out你看见他出去了吗？
I felt
something crawl up my leg.我感到有什么东西爬到我腿上了。
注意：转为被动语态时，原不带to的不定式要变成带to的不定式。notice和watch没有被动语态。
We saw
the car stop.
n The car was seen to stop.我们看见这辆车停了下来。
n
2．在使役动词后作宾语补足语，不定式不带to。
这类动词有：make,
let, have等。转为被动语态时，其后通常都用带to的不定式（have没有被动语态）。
有些动词跟不定式作宾语补足语时省去了to，这些动词有：
一感二听三让四观看。
一感：feel 二听：hear,listen
to 三让：let,have,make 四观看：observe,see,watch.,look
at
What
would you have me do你要我做什么？
She made
him give up smoking.她让他戒了烟。
Let him
do whatever he wishes to do.他想干什么就让他干吧。
Though
he had often made his little sister cry, today he was made to cry by his little
sister. 虽然经常是他弄哭小妹妹，但今天他却被小妹妹弄哭了。
3．在表示心理状态的动词后作宾语补足语。这类动词有：consider,
think, believe, discover, find, imagine, judge, suppose, prove等。这类动词后的不定式通常是“to be+形容词或名词”结构，think,
consider, find后的to be常可省略。
We
consider him (to be) a good teacher.我们认为他是一个好老师。
He
proved that theory (to be) very important.
他证明那个理论是很重要的。
I
thought her (to be) nice and honest the first time I met her.我第一次见到她的时候就认为她人很好，很诚实。
4．在表示情感状态的动词后作宾语补足语。这类动词有：love,
like, prefer, hate, want, wish, expect等。
I'd
prefer you to leave him alone.我希望你不要打扰他。
I don't
want there to be any trouble.我不想有任何麻烦。
5．动词advise,
allow, ask, beg, command, tell, invite, force, oblige, get, help, encourage,
persuade, permit, remind, request, order, warn, cause等后面，多接不定式短语作宾语补足语。
We don't
allow such things to happen again.
我们不容许这种事情再发生。
Most of
the parents agree to forbid their
children to smoke.大多数父母都同意禁止自己的孩子抽烟。
She
asked me to answer the phone in her absence.她请我在她不在的时候接电话。
Please
remind me to leave her this note.请提醒我留给她这张纸条。
She
requested him to go with her.她邀请他一同去。
注意：hope,
demand, suggest等动词后面不能接不定式作宾语补足语。
【误】I
hope you to give me a hand.
【正】I
hope you can give me a hand.我希望你能帮我一把。
【正】I
wish you to give me a hand.我希望你能帮我一把。
【误】He
demanded me to be present at the meeting.
【正】He
demanded that we should be present at the meeting.他要求我们出席会议。
【正】He
required us to be present at the meeting.他要求我们出席会议。
【误】Mr
Li suggested her not to go there alone.
【正】Mr
Li suggested that she should not go there alone.李先生建议她不要独自去那里。
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