现在进行时的结构.doc

仅供个人参考For personal use only in study and research; not for commercial use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,则末尾的辅音字母双写, 加-ing,?如:?forget-forgetting,prefer-preferring,travel-travelling swim-swimming 5.?以?-ic?结尾的动词，应先把?-ic?变为?-ick,再加?-ing,eg:?panic/panicking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?I?am?not?singing?.?They?arent?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?arent?.?Are?they?writing?Yes?,they?are?.?/?No?,they?arent?.?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-Im?You?are-Youre?He?is-Hes?She?is-Shes?It?is-Its?We?are-Were?They?are-Theyre?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?ones?knocking?at?the?door?2.正在进行着的动作可视为未完成的动作：?Hes?talking?to?his?friends?in?the?classroom.?可用?still?一词强调动作的持续性?Hes?still?talking?to?his?friends?in?the?classroom.?3.?表示一段时间内重复性的动作,说话时动作未必正在进行?Mr.?Black?is?writing?another?article.?4.现在进行时可用来表示不会长期发生的动作或情况,或被认为在短期内正在进行的动作或存在的状态?Whats?your?brother?doing?these?days?Hes?studying?English?at?Oxford?University.?5.现在进行时也可以用来表示当前的动向：?People?are?becoming?more?and?more?beautiful?these?days.?6.?表示渐变的动词有：become,turn,get,grow,run,go,begin等?The?leaves?are?turning?brown.?Its?getting?colder?and?colder.?7.与always,constantly,forever?等词连用,表示反复发生的动作或持续存在的状态,往往带有说话人的主观色彩?You?are?always?changing?your?mind.?一.用现在进行时完成下列句子:?1.?_you_(fly)?a?kite?Yes,_.?2.?_you_(sit)?in?the?boat?3.?_he_(talk)?with?me?4.?We_(play)?football?now.?5.?What_you_(do)?6.?I_(sing)?an?English?song.7.?What_he_(mend)?8.?He_(mend)?a?car.?9.?These?boys?_?(play)?tennis?on?the?playground.?10.?My?mother_?(cook)?in?the?kitchen.?11.?We?cant?help?you,because?we?_?(have?)classes.?12.?_?the?boy?_?(write)?his?homework?13.?Look!?These?butterflies?_?(fly)?in?the?sky.?14.?Listen!?The?girl?_?(sing)?in?the?next?room.?15.?The?naughty?boy?_?(swim)?in?the?river.二.选择?1.?Look.?Lucy?is_?a?new?bike?today.?A.?jumping?B.?running?C.?riding?D?takeing?2.?The?children?_?football.?A.?is?playing?B.?are?playing?C.?play?the?D.?play?a?3.?They?_TV?in?the?evening.?They?do?their?homework.?A.?are?watching?B.?cant?watching?C.?dont?watch?D.?dont?watching?4.?Listen!?She_?in?the?classroom.?A.?is?singing?B.?sing?C?.to?sing?D.?is?sing?5.?_are?you?eating?Im?eating?_?meat.A.?What,some?B.?Which,any?C.?Where,not?D.?What,a?6.?Is?she?_?something?A.?eat?B.?eating?C.?eatting?D.?eats?7?I?cant?catch?up?with?the?fashion,because?the?clothes?style_?all?the?time.?A.?has?changed?B.?is?changed?C.?is?changing?D.?changed?8.?Its?six?in?the?afternoon.?The?Greens_?lunch?together.?A.?has?B.?are?having?C.?have?had?D.?had?had?9.?Dont?make?any?noise?while?the?students_?to?the?class.?A.?are?listening?B.?listened?C.?have?listened?D.?had?listened?10.?Jack?and?Ketty_?in?the?lake.?Lets?join?them,shall?we?A.?swim?B.?have?swum?C.?swam?D.?are?swimming不得用于商业用途仅供个人用于学习、研究；不得用于商业用途。For personal use only in study and research; not for commercial us