动词不定式用法ppt课件.pptx

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1、动词不定式用法How to use “to do”?CONTENTS2Which （动词不定式用法）3How （动词不定式运用）1What ( 动词不定式介绍 )“”1、动词不定式介绍、动词不定式介绍动词不定式没有人称和数的变化，在句中不能独立作谓语；动词不定式具有名词、形容词和副词特征，在句中可以作主语、宾语、宾语补足语、定语、表语和状语等多种成分；动词不定式具有动词特点，可以有自己的宾语和状语，组成动词不定式短语。动词不定式的肯定形式是todo；其否定形式是not todo。作主语作定语作宾语动词不定式作宾语补足语作状语作表语2、动词不定式用法、动词不定式用法2.1作主语作主语常用it作形

2、式主语，真正的主语即动词不定式放在后面。如： Its wrong to play tricks on other peopleIts our duty to keep our environment clean and tidy点击规律：It is adj（形容词）to do sthIt is n （名 词）to do sth这两种句型中，it仅作形式主语。2.2作定语作定语放在被修饰的名词、代词后面例句： The doctor said he could do nothing to help the boy点击规律：动词不定式在句中作定语，常放在被修饰的名词、代词之后。提示：如果动词不定式和

3、前面所修饰的词构成动宾关系，若动词是不及物动词，切记不要忘掉介词。如： I have a small bedroom to live in2.3作宾语作宾语want，decide ，agree，hope，choose，fail等动词后常接动词不定式作宾语。如：She wants to be a doctorfindfeelitadjto do sth该句型中，it是形式宾语，真正的宾语是后面的动词不定式。如：The man downstairs found it difficult to get to sleepI feel it easy to recite the text2.4作宾语补足

4、语作宾语补足语tell/ask/want/ordersb.+to do sth. 等词后面常接不定式作宾补。如：Edisons mother taught him to read and write let/make/have/see/hear/feel/watch/notice.sb.+do sth. 后面接不带to的不定式作宾补。如： The boss makes them work 16 hours a day 若变成被动语态，在上述结构中，不定式符号to要加上。如： They are made to work 16 hours a day by the boss 2.5作表语作表语放在

5、连系动词be后面例句：His wish is to become a scientistThe first important thing is to save the soldiers lives点击规律：动词不定式在句中作表语时，通常对连系动词前面的名词进行诠释说明。2.6作表语作表语目的状语：放在go，come，use，live，in order等词后面。如：I come to see youHe runs fast in order to get there in time原因状语：放在sorry，glad，surprised， disappointed，excited等词后面。如：I

6、 am glad to see you hereI am sorry to trouble you作结果状语。如：The room is large enough to hold 1000 people3、动词不定式运用、动词不定式运用 The chair looks very old, but in fact it is very comfortable to _. A. sit B. sit on C. be sat D. be sat onJohn was made _ the car for a week as a punishment. A. to wash B. washing C

7、. wash D. to be washingThe first thing I want to do is _. A. visit to him B. to visit him C. visiting him D. visited him Li Yang advised me _ too much, otherwise I would have been drunk. A. not to drink B. to drink C. not drinking D. drinking 3、动词不定式运用、动词不定式运用I put the flowers on the porch_ from the

8、 rain.A. protecting B. to protect C. protected D. to be protectedLet him_ it by himself. A. to do B. doing C. did D. doMy parents want me _ good marks. A. get B. to get C. getting D. gotKathy decided _ hard and make herself_ behind the others. A. to work; not fall B. working; not to fall C. to work; fall D. working; to fallTHANKS