英语口语语法：不定时句型《英语口语语法句型宝典》从语法角度出发，总结了口语中最常用的疑问句型、假设法句型、含不定词句型、含分词之句型、比较句型、含助动词之句型、含代名词之句型、含关系词之句型、含动名词之句型和否定句型。
掌握这些句型，口语会得到极大的提升。
have sth. to do with ...结构︰... have something／nothing to do with ...说明︰此句型意为“…与…有／无关系”。
这是包含不定式的习惯用法。
随着“有关系”的程度，something 可改为little，much，a great deal 等。
have nothing to do with表示否定；have anything to do with 用於<疑问句>中。
Her diligence must have something to do with his success.她的勤勉和她的成功一定有某些关系。
The traffic accident had nothing to do with him.这交通事故和他一点关系也没有。
His wife had much to do with his bankruptcy.他的破产和他的妻子很有关系。
have no other N except to结构︰主词＋have no other＋名词＋except／than＋to-不定词说明︰此句型意为“除了要…没有其他的…”。
except 可以换成than。
The speaker has no other purpose except to make people laugh.这位演说者除了想搞笑之外，没有别的目的。
We have no other choice than to agree with them.我们除了同意他们之外，没有别的选择。
I have no other wish except to pass the examination.我除了要通过考试之外，没有别的心愿。
... in order/so as to ...结构︰in order／so as＋to-不定词…说明︰此句型意为“为了…；想做…就得…”。
这是表目的的不定词句型，意思更为明确。
He must work very hard in order to support his large family.他必须拼命工作以养活他的大家庭。
Listen carefully so as to follow the teacher.要仔细听才能听懂老师讲的课。
You must watch your step so as not to fall down.你必须留心脚下才不会跌下去。
... be used to ...结构︰主词(物) + be used to-不定词说明︰此句型意为“被用来…”。
主词通常是无生命的东西。
而“物＋be used as＋<名词>”译为“被用来当做…”。
The book is used to teach us how to write.这本书教我们如何写作。
The knife can be used to cut meat.刀能用来切肉。
It is said that the plant can be used to treat hepatitis.据说那种植物可用来治肝炎。
The book is used as a reference book.这本书被用来做参考书。
happen/chance to ...结构︰主词＋happen／chance＋to-不定词…说明︰此句型意为“…碰巧…”。
A friend of his happened to be sitting in a railroad-coach next to a young man who was obviously depressed.他的一个朋友碰巧在火车车厢里坐在一个无精打采的年轻人的身边。
We happened to meet at the station.我们碰巧在火车站相遇。
He happened to be sleeping.他碰巧在睡觉。
I chanced to be thinking of the same thing.我碰巧想到同样的事。
... is said to ...结构︰主词＋is said＋to-不定词…说明︰此句型意为“据说…（现在）是…”。
而“is said to have been ...”是“据说…（以前）是…”。
His music is said to be “good”or “great”.他的音乐据说是“好”或“了不起”。
He is said to have been the richest man in Taiwan.据说他以前是台湾最有钱的人。
They are said to build a hospital here.据说他们要在这里盖一家医院。
... be bound to ...结构︰主词＋be bound＋to-不定词说明︰此句型意为“一定…”。
“be bound to V”是“be sure to V（一定）”之意，而“be bound for”是“前往”之意。
Something is bound to happen one way or another to end the conflict or solve the problem.事情一定以某种方式发生以结束冲突或解决难题。
He is bound to come tonight.他今天晚上一定会来。
If so, your points of view are bound to conflict with his.如果这样的话，你的观点一定会和他的起冲突。
... do all one can to ...结构︰主词＋do all one can to-不定词…说明︰此句型意为“尽一切可能来…”。
注意do 和can 的<时态>要保持一致。
Daddy did all he could to fill my needs and desires.爸爸尽一切可能来满足我的需求和欲望。
You should do all you can to persuade him.你应该尽一切可能来说服他。
We have done all we could to catch up with them.我们已经尽了一切可能来赶上他们。
... be meant to ...结构︰主词＋be meant＋to-不定词说明︰此句型意为“…是有意要…；…是命中注定要…”。
“be meant to V”有时变成“be meantfor N”。
Some TV programs are meant to be watched today and forgotten tomorrow.有些电视节目的用意是要今天观赏，明天忘掉。
He believes he is meant to be a great man.他相信他命中要成为伟人。
This dictionary is meant for you.这本字典是要给你的。
be + ADJ + to ...结构︰主词＋be＋形容词＋to-不定词说明︰<主词>实际上是to-<不定词>的<受词>，经过转变而移到句首。
It was even more pleasing to look at in the morning light.它在早晨的光线下看起来更悦目。
The rising sun is especially beautiful to look at from this angle.旭日从这个角度看起来特别美。
I think she is easy to please.我想她是很容易讨好的。
... be likely to ...结构︰主词＋be likely＋to-不定词…说明︰此句型意为“…可能…”。
likely 表示具有充分根据的预测。
有时<句型>可变为“It is likely that ...”。
One’s first impression is likely to be that everyone is in a rush.一个人的第一个印象是，每个人都是匆忙的。
He is likely to arrive at any time.他可能随时会到。
His health is likely to get worse.他的健康可能会恶化。
make an/no attempt to ...结构︰主词＋make an／no attempt＋to-不定词…说明︰此句型意为“…打算要／没有打算要…”；“…试图要／没有试图要…”。
His smile deepened, but he made no attempt to answer.他的微笑加深了，但他没有打算要回答。
I made no attempt to make friends with her.我没有打算要和她做朋友。
Will they make any attempt?他们会再做另一次的尝试吗？To ..., Main Clause结构︰不定词片语，主要子句说明︰此类<不定词片语>通常放在句首，表示目的，修饰<主要子句>。
常用的有to tell the truth（老实说），to do someone justice（替某人说句公道话），to be brief（简言之），to begin with（首先），to sum up（总之），to make matters worse（更糟的是），so to speak（可以这么说），needless to say（不用说），to say nothing of sth。
（更不用说）等。
To make sure that he was at home, I called him up in advance.为了确定他在家，我事先打电话给他。
To tell the truth, I don’t agree to your plan.老实讲，我不同意你的计划。
To do her justice, she is not as bad as you described.说句公道话，她并没有你说的那样坏。
To sum up, only when strict punishment can be imposed on the lawless, can social stability be maintained.总之，唯有当严刑峻罚加之於违法之徒时，才能维持社会安定。