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1、WELCOME TO MY CLASS,动 词,动词的构成,助动词 情态动词 系动词 实义动词,助动词,PART 1,助动词,助动词的几种形式 do /dont does/ doesnt did/ didnt will /wont have, havent /has, hasnt/had hadnt shall should/shant shouldnt,助动词的用法,Do you get up early every day? I didnt （没）have lunch yesterday. Will you be back soon? He hasnt （没）finished the wo
2、rk yet.,情态动词,PART 2,情态动词,共同特点 情态动词后面跟动词原型 无论否定、疑问都用情态动词 只有时态变化，无人称变化,情态动词,can / could 1. 在表示有能力作某事时，could是can的过去式。 I can swim. I could swim at the age of five. 2. 在表示请求允许的时候两者和互换， could比can语气更委婉。 Can I help you? Could you open the window?,情态动词,must /have to Must 表示主观意愿，否定句用Mustnt，否定回答用neednt I must
3、go now. You mustnt play in the street. Must I clean the room now? No,you neednt. have to表示客观条件的限制的“不得不”，它有时态和人称变化，需要助动词来否定和疑问。 I dont have to carry the big box. He had to wash his clothes.,情态动词,May 表示请求别人允许。 May I use your bike? 表示可能性。 He may be a teacher. He may live in this building.,系动词,PART 3,系动
4、词,be动词的几种形式 am is are was were being been,be动词的几种形式,be动词的用法,与名词、数词、形容词、介词连用 I am a doctor. He is ten. They are tired. The cat is under the table. There is a pen on the desk.,系动词,其他系动词 变成类get，turn，become，make 感观动词look，sound，smell，taste，feel 似乎类 seem appear 保持类stay keep 以上系动词只和形容词连用，构成系表结构 I feel hung
5、ry. The day gets longer and longer. He looked happy.,实义动词,PART 4,实义动词,实义动词指的是有具体行为意思的动词。 实义动词在句中可以做谓语动词和非谓语动词。,实义动词,3. 做谓语动词的用法 四种形式：单三，现在分词，过去式，过去分词 注意：掌握四种形式的变化规律 He works in the office. We are dancing together. I caught a cold last week. She has watered the flower.,实义动词,做非谓语动词的用法（指出现在谓语动词之后的动词，它受
6、前面谓语动词的限制） 非谓语动词会有三种形式： 原型(do) 动名词(doing) 不定式(to do),实义动词,用原型： let sb. do make sb. do help sb.(to) do had better do,实义动词,用动名词： like doing enjoy doing finish doing 介词之后用动名词 be good at doing what about doing thank you for doing,实义动词,用不定式： want to do decide to do plan to do would like to do tell sb. ( not) to do ask sb. (not) to do,Thank you,
