1、be 动词,be动词的几种形式 am is are was were being been,be动词的用法,Be 动词在时态中的运用 在现在进行时中We are talking （交谈）now. 在过去进行时中We were talking （交谈） at this time yesterday.,助动词,助动词的几种形式do /dont does/ doesntdid/ didntwill /wonthave, havent /has, hasnt/had hadnt,助动词的用法,对句子进行否定和疑问 Do you get up early every day? I didnt （没）ha
2、ve lunch yesterday. Will you be back soon? He hasnt （没）finished the work yet. 在反意疑问句中 He works in a school, doesnt he? She has never been there,has she? 在倒装句中 They helped the farmers , so did we. I wont visit the famous singer,neither will he.,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、倒装句、或反意疑问句都用情态动词 只有时态变化，没有
3、人称变化,情态动词,解释 can / could 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? 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.,情态动词,Must /have toMust 表示主观意愿，否定句用Mustnt，否定回答用needntI must go now.You mustnt play in the street.Must I clean the room now?No,you
4、 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,解释 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,我们所学过的系动词是 变成类get，turn，become，make 感观动词look，sound，smell，taste，feel 似乎类 seem appea
5、r保持类stay keep 系动词只和形容词连用，构成系表结构 I feel hungry. The day gets longer and longer. He looked happy.,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。 做谓语动词的用法动词会有四种形式：单三，现在分词，过去式，过去分词,实义动词,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.,
6、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，它受前面谓语动词的限制）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 w
7、ould like to do learn to do tell sb. ( not) to do ask sb. (not) to do,实义动词,注意下列词不同形式的不同用法:remember doing/to doforget doing/to dostop doing/to dogo on doing/to do,过去分词介词(这类短语常同连系动词连用),动词副词介词,动词介词名词,3.Emergency line operators must always _ calm and make sure that they get all the information they need to send help.A.grow B.appear C.become D.stay4.In this seaside resort，you can _ all the comfort and convenience of modern tourism.A.enjoy B.apply C.receive D.achieve,12.These teenagers dont know much of the world yet；thats why they are so easily _.A.taken in B.taken onC.taken up D.taken off,
