动词不定式精讲
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• 常见的这类不定式短语有: to be frank , to be honest, to be brief, to make matters worse etc.
Bare infinitive (不带to的动词不定式)
不带to的动词不定式常用于： 1) 使役动词let、make和have后面 Her parents wouldn’t let her go out alone. 她父母不会让她独自出门。 The boss made the workers work 14 hours a day. 老板让工人们每天工作14小时。 The teacher often has his students read aloud in class. 老师经常让他的学生在教室里大声读。
Infinitive
动词不定式
Lead-in
Homework checking!
Learning aims:
1. Know the basic structure of the to infinitive. 2. Identify its functions in different sentences. 3. Apply what they learn in class in practice.
找出下列句子中的错误。 I want to find a hotel to live. • I have a pen to write. I want to find a hotel to live in. I have a pen to write with. 不及物动词做后置定语时，注意在后面加上相应的介词。
那个小男孩有许多玩具可以玩。 The little boy has many toys to play with.
作状语
He spoke loudly (so as / in order) to be
Байду номын сангаас
heard.
目的状语.
They jumped with joy to hear the news.
作主语
1.当今掌握一门外语真的很重要。
To master a foreign language is really important nowadays. It is really important to master a foreign language.
2. 放弃吸烟是对的。
To give up smoking is right.
It is right to give up smoking.
动词不定式作主语时，其谓语动词用单数；通常用it 作形式主语，
而把真正作主语的动词不定式结构后置，以使句子保持平衡。
作宾语
1. Fred 没有钱，所以他决定找一份工作。 Fred didn’t have any money, so he decided to look for a job.
11
作表语
1. 我的工作是教英语。 My job is to teach English.
2. 眼见为实。 To see is to believe.
作定语
1. 你有什么要说的吗? Do you have anything to say?
2. Betty是第一个知道这真相的人。 Betty was the first to know the truth.
2. 他答应不告诉任何人这事。
He promised not to tell anyone about it.
These verbs are followed by ‘to infinitive’.
offer decide hope deserve attempt promise agree plan aim afford manage threaten refuse arrange learn forget fail want ask help would like would love expect beg mean（=intend） would prefer would hate
不
表语
定 We found a house to live in.
式
定语
She came here to study English.
状语
I warned the patient not to drink cold
water after the operation.
宾补
动词不定式可充当除了谓语的所有成分
Self-study
什么是非谓语动词？
在句子中不充当谓语的动词。 to do doing done
5
Guidance&Exploration
To do that sort of thing is foolish. 主语
I want to see you this evening.
动
宾语
词 All you have to do is to finish it quickly.
9
作宾补
1. 她叫我呆在这儿。 She asked me to stay there. 2.请允许我介绍Mr. White给你们。 Please allow me to introduce Mr. White to you. 我们认为他是一个好老师.(consider)
We consider him to be a good teacher.
原因状语.
结果状语
I’m too tired to walk any further tonight.
The picture is nice to look at. 修饰性状语
• To tell you the truth, we don't want to include you.
独立成分
• 这种动词不定式独立于句子之外， 表示说话者的态 度、语气等， 又称为评论性状语。
These verbs have the structure: verb + object + to infinitive
want ask help would like would love expect beg mean(=intend) would prefer would hate tell remind force enable teach order warn invite persuade get(=persuade,arrange for) advise rcommend encourage allow permit forbid
Bare infinitive (不带to的动词不定式)
不带to的动词不定式常用于： 1) 使役动词let、make和have后面 Her parents wouldn’t let her go out alone. 她父母不会让她独自出门。 The boss made the workers work 14 hours a day. 老板让工人们每天工作14小时。 The teacher often has his students read aloud in class. 老师经常让他的学生在教室里大声读。
Infinitive
动词不定式
Lead-in
Homework checking!
Learning aims:
1. Know the basic structure of the to infinitive. 2. Identify its functions in different sentences. 3. Apply what they learn in class in practice.
找出下列句子中的错误。 I want to find a hotel to live. • I have a pen to write. I want to find a hotel to live in. I have a pen to write with. 不及物动词做后置定语时，注意在后面加上相应的介词。
那个小男孩有许多玩具可以玩。 The little boy has many toys to play with.
作状语
He spoke loudly (so as / in order) to be
Байду номын сангаас
heard.
目的状语.
They jumped with joy to hear the news.
作主语
1.当今掌握一门外语真的很重要。
To master a foreign language is really important nowadays. It is really important to master a foreign language.
2. 放弃吸烟是对的。
To give up smoking is right.
It is right to give up smoking.
动词不定式作主语时，其谓语动词用单数；通常用it 作形式主语，
而把真正作主语的动词不定式结构后置，以使句子保持平衡。
作宾语
1. Fred 没有钱，所以他决定找一份工作。 Fred didn’t have any money, so he decided to look for a job.
11
作表语
1. 我的工作是教英语。 My job is to teach English.
2. 眼见为实。 To see is to believe.
作定语
1. 你有什么要说的吗? Do you have anything to say?
2. Betty是第一个知道这真相的人。 Betty was the first to know the truth.
2. 他答应不告诉任何人这事。
He promised not to tell anyone about it.
These verbs are followed by ‘to infinitive’.
offer decide hope deserve attempt promise agree plan aim afford manage threaten refuse arrange learn forget fail want ask help would like would love expect beg mean（=intend） would prefer would hate
不
表语
定 We found a house to live in.
式
定语
She came here to study English.
状语
I warned the patient not to drink cold
water after the operation.
宾补
动词不定式可充当除了谓语的所有成分
Self-study
什么是非谓语动词？
在句子中不充当谓语的动词。 to do doing done
5
Guidance&Exploration
To do that sort of thing is foolish. 主语
I want to see you this evening.
动
宾语
词 All you have to do is to finish it quickly.
9
作宾补
1. 她叫我呆在这儿。 She asked me to stay there. 2.请允许我介绍Mr. White给你们。 Please allow me to introduce Mr. White to you. 我们认为他是一个好老师.(consider)
We consider him to be a good teacher.
原因状语.
结果状语
I’m too tired to walk any further tonight.
The picture is nice to look at. 修饰性状语
• To tell you the truth, we don't want to include you.
独立成分
• 这种动词不定式独立于句子之外， 表示说话者的态 度、语气等， 又称为评论性状语。
These verbs have the structure: verb + object + to infinitive
want ask help would like would love expect beg mean(=intend) would prefer would hate tell remind force enable teach order warn invite persuade get(=persuade,arrange for) advise rcommend encourage allow permit forbid