高中英语语法 动词不定式的用法(31张PPT)
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动词不定式的用法归纳PPT课件
连用，在句中起名词作用，可充当主语、表语、宾语等 。
ØHe didn’t know what to say.
ØHow to solve the problem is very important.
ØMy question is when to start.
注意：•在与why连用时，只用于why或why not开头的简
(subject) 3. My ambition is to work in the computer
industry when I grow up. (predicative)
第17页，共52页。
4. I don’t have time to sit around feeling sorry for myself. (attribute)
第2页，共52页。
1. 作主语
2. 作宾语 3. 作宾语补足语 4. 作定语
5. 作状语
6. 作表语 7. 作独立成分
8. 与疑问词等连用
第3页，共52页。
1 不定式作主语 (subject)
谓语动词用单数形式。 To see is to believe. To keep smiling is healthy for you. It’s important to learn English well.
He is looking for a room ptola_y__w_i_t_h______ (live).
He needs a friend to __________ (play).
choose from
There are three pairs ofБайду номын сангаасshoes for you to _________ (choose).
ØHe didn’t know what to say.
ØHow to solve the problem is very important.
ØMy question is when to start.
注意：•在与why连用时，只用于why或why not开头的简
(subject) 3. My ambition is to work in the computer
industry when I grow up. (predicative)
第17页，共52页。
4. I don’t have time to sit around feeling sorry for myself. (attribute)
第2页，共52页。
1. 作主语
2. 作宾语 3. 作宾语补足语 4. 作定语
5. 作状语
6. 作表语 7. 作独立成分
8. 与疑问词等连用
第3页，共52页。
1 不定式作主语 (subject)
谓语动词用单数形式。 To see is to believe. To keep smiling is healthy for you. It’s important to learn English well.
He is looking for a room ptola_y__w_i_t_h______ (live).
He needs a friend to __________ (play).
choose from
There are three pairs ofБайду номын сангаасshoes for you to _________ (choose).
英语语法动词不定式 ppt课件
I wish to go with you.
need to do learn to do agree to do
plan to do decide to do refuse to do
begin to do start to do
try to do
forget to do remember to do like to do
Stop to do go on to do
She asked me to help her. The teacher told him to come on time. Edison’s mother taught him to read and write.
want sb to do get sb to do find sb to be would like sb to do
7.疑问词who, what, which, where, when, how 加to do可构成不定式短语，在句中可用作主语、 宾语、宾语补足语、表语等。
When to start has not been decided. (主语)
I don’t know what to do. (宾语)
He can tell you where to get the book. (宾语补足语)
It’s +adj+of sb+to do sth. Eg:你能邀请我，你真是太善良了。 It’s very kind of you to invit me. 若形容词是描述人的性格、品质的，如 kind，good，nice，right，wrong，clever， careless，polite，foolish等，用of sb. Eg:你真聪明，解出了这道数学题。 It’s clever of you to work out the maths problem.
英语语法动词不定式ppt课件
2
• 相似点： 1. 都可以带宾语。如； • He bought a computer. • He wanted to buy a computer. 2. 都可以由状语修饰。如； • He studies very hard in the college. • Studying hard, you will pass the exam.
13
不定式的基本用法：
• 作主语 • 作宾语 • 做补语 • 做表语 • 做定语 • 做状语
14
不定式的语法功能
（1） 作主语
To talk with him is a great pleasure.
一般情况下，不定式（短语） 作主语时， 通 常用形式主语“it” 代替
It is a great pleasure to talk with him.
不定式的语态
（1）不定式所修饰的名词与不定式在逻辑上构成主谓 关系时，不定式用主动语态。
你有开门的钥匙吗？ key unlock the door Have you got a key to unlock the door?
（2） 不定式的逻辑主语是这个不定式动作的承 受者，不定式用被动语态
He asked to be sent to work in countryside.
12
不定式的否定形式
• 动词不定时的否定形式是在不定式符号前 加not
• The teacher warned the students not to cheat in the examinations.
• She pretended not to see me when I passed by.
4
不定式
• 不定式的概述 • 不定式的基本用法 • 不定式的特殊句型
• 相似点： 1. 都可以带宾语。如； • He bought a computer. • He wanted to buy a computer. 2. 都可以由状语修饰。如； • He studies very hard in the college. • Studying hard, you will pass the exam.
13
不定式的基本用法：
• 作主语 • 作宾语 • 做补语 • 做表语 • 做定语 • 做状语
14
不定式的语法功能
（1） 作主语
To talk with him is a great pleasure.
一般情况下，不定式（短语） 作主语时， 通 常用形式主语“it” 代替
It is a great pleasure to talk with him.
不定式的语态
（1）不定式所修饰的名词与不定式在逻辑上构成主谓 关系时，不定式用主动语态。
你有开门的钥匙吗？ key unlock the door Have you got a key to unlock the door?
（2） 不定式的逻辑主语是这个不定式动作的承 受者，不定式用被动语态
He asked to be sent to work in countryside.
12
不定式的否定形式
• 动词不定时的否定形式是在不定式符号前 加not
• The teacher warned the students not to cheat in the examinations.
• She pretended not to see me when I passed by.
4
不定式
• 不定式的概述 • 不定式的基本用法 • 不定式的特殊句型
高三英语一轮复习不定式的用法(47张PPT)
2. Then I started to get weaker and weaker, …
3. Even after all that, no one could give my disease a name and it is difficult to know what the future holds.
5. 如果不定式是不及物动词, 则后面需 适当的介词。
Please pass me some paper to write _o_n__.
六、不定式作状语 (adverbial)
I got up early to _ca_t_c_h__th_e__tr_a_i_n_. You came here to ________.
2. 当被the first, the last, the only等词以 及形容词最高级修饰时 eg: She is always the first to come and the last to leave.
3. something, anything, nothing, everything等复合不定代词常用不定式 做后置定语。
二、不定式作表语 (predicative)
• My job is to protect the world. • Your task is to _____________.
不定式常用在系动词 be, seem, appear,
get, remain等后作表语。
Seeing is to believe. × To see is believing. × Seeing is believing. √ To see is to believe. √
Marty says …
4. Sometimes, too, I was too weak to go to school so my education suffered.
3. Even after all that, no one could give my disease a name and it is difficult to know what the future holds.
5. 如果不定式是不及物动词, 则后面需 适当的介词。
Please pass me some paper to write _o_n__.
六、不定式作状语 (adverbial)
I got up early to _ca_t_c_h__th_e__tr_a_i_n_. You came here to ________.
2. 当被the first, the last, the only等词以 及形容词最高级修饰时 eg: She is always the first to come and the last to leave.
3. something, anything, nothing, everything等复合不定代词常用不定式 做后置定语。
二、不定式作表语 (predicative)
• My job is to protect the world. • Your task is to _____________.
不定式常用在系动词 be, seem, appear,
get, remain等后作表语。
Seeing is to believe. × To see is believing. × Seeing is believing. √ To see is to believe. √
Marty says …
4. Sometimes, too, I was too weak to go to school so my education suffered.
高中英语语法不定式的用法PPT课件
A. to do
ቤተ መጻሕፍቲ ባይዱ
B. to be done
C. done
D. Both A and B
2. I have a lot of homework ________.
A. to do
B. to be done
C. done
D. Both A and B
3. His words are hard _____________ .
区别：I have a lot of homework to do. （不可用 to be done)
体会下列两句的区别 1. Do you have anything to wash today? 你今天要洗什么吗？
（to wash的逻辑主语为句子的主语you）
2. Do you have anything to be washed?
to the ceremony.
主语
2. She didn’t like _t_o__b_e__tr_e_a_t_e_d__ ( treat ) as a child. 宾语
3. His dream was _t_o__b_e_a__d_m__it_te__d___ ( admit ) to a good university. 表语
( discuss ) .
5. She was sent there ___t_o__b_e__tr_a_i_n_e_d____
( train ) for the space flight.
Step 3 Tell the functions of the
infinitives
1. It’s an honour _t_o__b_e__in_v_i_t_e_d( invite )
动词不定式的用法ppt经典实用
•2024/4/27
•动词不定式的用法ppt
• 想要去做某事
• 2. 计划去做某事want to do sth
• 3. 希望去做某事hope todo sth
4. 期待去做某事 expect to do sth
5. 决定去做某事 decide to do sth
6. 忘记去做某事 remember to do sth
her homework. 6. Let's try _t_o_f_i_n_is_h_(finish) the work on time.
动词不定式的用法ppt
语法训练 动词不定式做宾语补足语
1. She expects me t_o__w_a_i_t (wait) for her at 7:00. 2. The teacher asked us _t_o_b_e__ (be) quiet. 3. The old man wants his children _to__v_is_i_t_
语法训练 动词不定式做主语
1. It usually takes me over two hours _t_o_f_in_i_s_h_ (finish) my homework.
2. It was their dream _t_o_h_a_v_e_(have) a bridge. 3. It's your turn _to__c_le_a_n_(clean) the blackboard. 4. It's important for us _t_o_l_e_a_rn_(learn) English. {5. It's very kind of you _to__h_e_lp__(help) me a lot.} {6. It's time for me _t_o_g_o__(go) home.}
高中动词不定式讲解.ppt
> 不定式用在介词but, except, besides 后时,如果这些介词前有行为动词do的 各种形式,那么介词后的不定式不带to, 相反则带to.(有do省to,无do带to)
(1). She could do nothing but cry. (2). I have no choice but to go. (3).What do you like to do besides sleep.
(1).They pretended not to see us.
(一般式表示与谓语的动作同时/发生在它之后.)
(2). He pretended to be sleeping.
(在谓语动词发生的同时,不定式的动作也正在进行)
(3).She pretended to have known it before. (完成式表示动作发生在谓语动作之前)
三. 用法/ 功能
(1). 主语
To see is to believe. It’s important to learn English well . =To learn English well is important .
•单个不定式作主语时,谓语动词用单数,但由and连 接两个不定式时谓语动词用复数。 •若不定式太长,往往用it作形式主语,不定式置后.
hope, refuse, learn, set out, fail
choose, decide, determine，agree, manage,
offer pretend, plan, etc.
(3) 宾语
I found it necessary to talk to him again.
think/ consider/ find/ make/ feel it + adj./n.+ to do