现在进行时讲解及试题答案.docxVIP

小学英语语法之??现在进行时[详解、练习、答案]? 一、概念? 现在进行时表示说话时正在进行或发生的动作,也可表示当前一段时间内的活动或现阶段正在进行的动作．? 结构：助动词?be?(?am?/?is?/?are?)?+现在分词.?二、?现在分词的构成：? 1.大多数动词后可在动词后直接加-ing．?? ?Eg:?carry-carrying,catch-catching,drink-drinking,?enjoy-enjoying?hurry-hurrying?,do-doing?,?read-reading?,?think-thinking? 2.?如果动词以-e结尾,则去掉-e,再加-ing,?如come-coming?,?have-having?,?make-making,ride-riding,write-writing,take-taking,use-using．? 3.?如果动词只有一个元音字母,而其后跟有一个辅音字母时,将此辅音字母双写,再加-ing??如：?hit-hitting, let-letting,?put-putting, run-running, sit-sitting．? 4.?如果动词有两个音节,且重音在第二个音节上,则末尾的辅音字母须双写,再加-ing,??如:?for’get-forgetting,pre’fer-preferring,up’set-upsetting．试比较?’benefit/benfiting,?’differ/differing,’profit/profiting,这些词的重音在第一个音节上,因此其末尾的辅音字母不双写．? 5.?以?-ic?结尾的动词,应先把?-ic?变为?-ick,再加?-ing,eg:?panic/panicking,picnic/picnicking,但?lie/lying?,die/dying,tie/tying是特殊变化要记住．? 三、句型结构：? 1.现在进行时的肯定形式、否定形式、疑问形式及其回答,所有变化都体现在助动词?be?(?is?/?am?/?are?)?上．? ?1)现在进行时的肯定形式：主语+be(am/?is/are)+doing+其他成分??? I?am?singing?.?They?are?writing?.? ?2)现在进行时的否定形式:主语+be(am/?is/are)+not?+doing+其他成分??? I?am?not?singing?.?They?aren’t?writing?.? ?3）一般疑问句及回答：be(am/?is/are)+?主语+doing+其他成分??? Am?I?singing???Yes?,you?are?.?/?No, you?aren’t?.?? ?Are?they?writing???Yes?,they?are?.?/?No, they?aren’t?.? ?4)特殊疑问句及回答:特殊疑问词+be(am/?is/are)+主语+doing+其他成分??? What?are?you?doing??We?are?playing?(要求就提问内容具体回答).? 2.?缩写形式如下:? ??I?am---I’m? You?are---You’re? He?is---He’s? She?is---She’s????It?is---It’s? We?are---We’re? They?are---They’re? 3.说明:?不是所有动词都能用现在进行时态的,如：???see、like、want、know?等动词往往都不用进行时态．? 四．用法：? 1.表示现在(?指说话人说话时)?正在发生的事情．往往与?now,at?the?moment,just?等副词连用,以示强调．? ?We?are?waiting?for?you.?What?are?you?doing??Some?one’s?knocking?at?the?door．?2.正在进行着的动作可视为未完成的动作：?? He’s?talking?to?his?friends?in?the?classroom.?? 可用?still?一词强调动作的持续性? ?He’s?still?talking?to?his?friends?in?the?classroom.? 3.?表示长期的或重复性的动作,说话时动作未必正在进行．?? Mr.?Black?is?writing?another?article.? ?Don’t?take?that?book?away.?Your?father’s?using?it.?? She?is?learning?piano?under?Mr.?Black.? 4.现在进行时可用来表示不会长期发生的动作或情况