动词不定式.ppt

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1、动词不定式的基本用法动词不定式的基本用法中考语法教学目标掌握动词不定式在句中作不同成分时的用法。带动词不定式的一些固定搭配和简单句型。动词不定式的定义英语中，把“to do(动词原形)”结构叫做动词不定式。其中to是动词不定式的标志 1、动词不定式作主语1:To dance with you makes me happy.2:It is difficult to drive in the mountains.这里It作形式主语，真正的主语是动词不定式 Or:To drive in the mountains is difficult.句子变形：It is so nice to meet you

2、 again.It is good to get up early.2、动词不定式作表语表语是补充说明主语的身份、性质、特征、状态的。一般跟在be动词后。可以是名词、形容词以及动词不定式。1.Her wish is to be a teacher.2.Your duty is to clean the classroom.3、动词不定式作宾语补足语宾补：补充说明宾语的情况。1：He wants me to come earlier.2:The policeman ordered them to turn around.这里me和them是宾语。4、动词不定式作状语状语：表示动作发生的时间、地点

3、、原因、程度。介词短语也可作状语。作目的状语 I went there to see her.（为了看你）She opened the window to let some fresh air in.（为了让新鲜空气进来）作结果状语1：He is too tired to go any further.2:He is not old enough to join the army.他太累了他太累了以至于以至于他再也走不动了。他再也走不动了。他太小了他太小了所以所以不能参军。不能参军。作原因状语不定式跟在表示“喜、怒、哀、乐”的形容词后，可以表示引起这些情感的原因。（happy sad surp

4、rised 等）1:Im sorry to trouble you.2:Im gald to see you.5、疑问词+不定式 我知道如何煮。我知道如何煮。I know how to cook.我不知道要买什么东西给你。我不知道要买什么东西给你。I dont know what to buy for you.一些后接动词不定式作宾语的及物动词。多表示意愿、企图等动词。如：hope want wish like try ask agree decide promise1.I want to talk with you.2.She has decided to go.下列结构常用带to的动词不定式。be able/ready/afraid to do sth Its time to do sth It takes sb some time to do sth.cant wait to do sthIts adj for/of sb to do sth一些动词不定式的谚语。To see is to believe.Eat to live,but not live to eat.Its never too old to learn.Not to advance is to go back.眼见为实吃是为了活着，但是活着不是为了吃。活到老学到老（学海无涯）不进则退