1.带to的不定式作宾语的补足语:
This enables you to use a language correctly and with ease. 这样能使你正确而自然地使用语言。
The doctor advised me to stay indoor more.医生劝我多呆在家里。
The committee adopt a resolution requiring the seven Auto makers selling the most cars in the state making 2 percent of those vehicles e-missions-free by 1998.
（1999考研第1题,C错,应改为to make。） 委员会通过一项决议,要求本州销售汽车最多的七个汽车制造商，到1998年使这些车辆中的2%达到无散发物。（试比较:require sb to do sth.）
有些介词动词也用于此句型:
In his famous speech at Gettysburg Lincoln called on the living to devote themselves to the GREat task remaining before him.
林肯在著名的盖特斯堡演说中,号召活着的人们为摆在面前的任务而献身。
She is counting on you to help. 他指望你的帮助。
注意not 常常出现在to 不定式之前:
The mother warned the boy not to touch the electric plug. 母亲警告孩子不要摸电源插头。
He begs me not to take any risk. 他恳求我不要冒险。
本句型中的不定式可能用被动式,在allow， advise， announce， believe， desire， expect， guarantee， intend， leave，mean，order， permit， wish 等动词之后,接不定式的被动式作宾语的补足语是很常见的:
Then a member of the research team voluntarily allowed himself to be bitten by an infected mosquito. 随后,研究小组的一位成员自愿让感染了的蚊子咬他自己。
They were working on a bomb， but they never really expected it to be used. 他们在制造一颗炸弹,可从来不希望会使用它。
本句型中的动词,有些可以用被动语态:
They were compelled to spend two hours in the forest because of the fog. 因为雾大,他们被迫在森林里过了两小时。
2.不带to 的不定式作宾语的补足语
在feel， hear， listen to， look at， notice， perceive?穴感知）， see， watch， make， let和have之后,作宾语补足语的不定式不用to。例:
The parents didn't notice the boy take the candy and run away. 父母没有注意到孩子拿了糖果就跑。
This thought made him burst into tears. 一想到这事，他就痛哭。
have常与情态动词连用,表示“希望、要”:
You ought to have Bill look at your TV . Maybe he could fix it. 你应该请比尔检查一下电视机,也许他能把它修好。
They are going to have the serviceman_________an electric fan in the office tomorrow.
A） install B） to install C） to be installed D） installed
（B4，1998.1-44，A对） 他们想让服务人员明天在办公室里装一台电扇。
have 还表示一种“经历”:
I had a strange thing happen to me this morning. 今天早上我遇到一件奇怪的事。
I had my mother die last year. 去年我母亲去世了。
3. to-不定式以to be 的形式出现
句型为:主语+动词+名词(代词)+to be + 形容词/名词/介词短语等:
We all think the electronic computer to be one of the most useful tools in use today. 我们都认为电子计算机是现代使用中的最有用的工具。
We have shown his story to be ridiculous. 我们已经证明了他的说法多么荒谬可笑。
I should guess him to be about thirty. 我猜他大约三十岁。
to be 可能以完成时出现,表示一种先于谓语动词的情况:
I deny the statement to have been a mistake. 我不承认这话曾经是个错误。
We consider him to have been there many times. 我们认为他到过那儿多次了。
在口语里,to be 常常省略了:
I thought the play （to be） quite a success. 我认为这出戏十分成功。
The priest pronounced them （to be） man and wife. 牧师宣布他们成为夫妻。
用于本句型的动词大多含有判断、声明、认为等意义。如account(视为),acknowledge(承认),adjudge(宣判),admit(承认),affirm(肯定),allege(断言),allow(承认),announce(宣布),appoint(任命),assert (宣称),assume(假定),believe(相信),boast(夸口),choose(选择),claim(声称),conclude(作结),conceive(构想),confess(招认),consider(认为), count(视为),declare(宣布),deem(认为),denote(指示),deny(否认),doubt(怀疑),discover(发现),elect(选举),esteem(认为),estimate(估计),fancy(想象),find(发觉),hold(认为),guess(猜想),imagine(想象),judge(判断),know(知道),maintain(坚持认为),perceive(觉察),presume(认为),proclaim(宣布),profess(声称)，pronounce(宣布),recognize(公认),reveal(揭示),show(显示),sup-pose(假定),suspect(怀疑),swear(发誓),think(认为),understand(相信),value(评估)等。
