1、第11讲 动词动词是表示动作或行为的词。按其词义和在句子中的作用可以分为连系动词、助动词、情态动词和行为动词。1、be动词(am,is,are) be动词做谓语时,要与主语在人称和数上保持一致。用法口诀: 我用am,你用are,is 用在他、她、它,复数全用are。 如:I am a teacher. You are a student. She is a nurse. We are Chinese. be动词的否定形式:am not(无缩写形式),is notisnt,are not=arent 2、助动词(do,does,did) do,does用于一般现在时,does用于第三人称单数,其
2、他人称和数用do。其过去式did用于一般过去时。他们通常用在疑问句和否定句中。助动词后动词要用原形。如:Do you like this film? Does she like playing football?I didnt go to school yesterday. 否定形式:do not = dont,does not =doesnt,did not=didnt3、情态动词(can,may,must,should,will,would,shall等)情态动词表示说话人对某一动作或状态的态度,表示“可能”,“可以”,“需要”,“必须”,“应当”等意思。情态动词没有人称和数的变化,后面的
3、动词要用原形。1)can和may都可以用来表示请求或允许,但may比can更正式,更客气些。如: Can I use your pen? May I come in? 2)must和should must意为“必须,应当”,含有一种命令的语气,比较生硬,不容商量。 should意为“应当,应该”,表示建议或劝告,语气比较委婉,客气。 如:You must finish your homework before you go to bed. You should stay in bed and have a good rest. 3)will和would用于疑问句,表示说话人向对方提出请求或询问,用would比will更委婉,更客气。如:Will you please open the window? Would you like some coffee? 注意区别:Id like 我想要(接名词) 如:Id like some tea.Id like to 我想要做(接动词原形)如:Id like to go with you.