be动词助动词情态动词讲解基础篇第一讲范本

be动词、助动词、情态动词讲解基础篇

1、be动词的用法现在时am/i sarebe过去时was were单数复数英语中，be动词选用单数还是复数，要由主语来定,主语是单数，就用单数,反之用复数句中含有be动词时♦肯定句主语+be+其他否定句主语+be+not+其他一般疑问句Be+主语+其他+特殊疑问句疑问词w hat/who/whe n/where+b e+主语+其他+I ama teacher.Youare ri ghtoShe is16y ears o Ido My fa t h e ris at ho mThe stude n t sare playi nggame sMy teac her w a s il I yeste r dayThe re i s ap i c ture ont h e wallThere are tw o books on the tabI e.★be动词用法歌我用am,你用ar e,is连接他她它单数名词用i s,复数名词全用areo变疑问，往前提，句末问号莫丢弃；变否定，更容易，be后not莫忘记；疑问否定任你变，句首大写莫迟疑be动词作谓语，它后面一般跟名词、形容词或介词短语她个子很高她在教室里她是一个高个子的女孩

2、助动词的用法英语句子按正常语序是“什么人或事物”+“做什么”，即，我们常说的“主语+谓语+其他”

①主语为I或复数名词、代词时肯定句I/We/They/The st udents+动词原形+其他+oWe watc hTV e v e ry n ighto变否定主语+dont+动词原形+其他+oWe dontwa tch TV ev ery ni ght.一般疑问句Do+主语+动词原形+其他4-D o you w atch TV every nightYes,we d o./N o,we d o nt特殊疑问句:疑问词+do+主语+动词原形+其他+How o ften d o youwatch TV

②主语为单数名词或代词时肯定句主语+动词第三人称单数形式+其他+He watc hesTVe very night否定句主语+doesnt+动词原形+其他+He doesntwatch TVever ynight.一般疑问句Does+主语+动词原形+其他+D oe s he watchTV everynightYes,he does./No,he doesnt特殊疑问句疑问词+does+主语+动词原形+其他+How oft e ndo e s hewatchTV★主语为单数或不可数名词，谓语要用单数第三人称,反过来，看见动词用T单数第三人称，可以推知主语是单数或不可数名词1o How yo urda d help at h omeA.d oB.d oe s C.is

2.goes bade asilyin summer A°Milk Bo A pp Ie s C.C ake s

③过去时的句式当句子时态为过去时时，动词用过去式，不受主语单复数的影响肯定句主语+过去式+其他+.He/W egot u p earI yev ery mo r ni nglas ty ea ro否定句主语+didnt+动词原形+其他+.He/We did n9t getupearly ever ymomin gla st year.一般疑问句Did+主语+动词原形+其他+Did he/y ou getup earIyevery m orn i ng lasty ea r Yes,h e/we did./No,he/we didnt.特殊疑问句疑问词+d id+主语+动词原形+其他+When didhe/you getup ev erymorning lastyear★初中阶段，助动词一般只出现在否定句或疑问句中,助动词用在肯定句中表示强调

3、情态动词的用法情态动词表示说话人的语气或情态初中英语中，常见的情态动词有:c ancould,may might,should,mu st,wi I1wou Id,ou ght to,h ave to,n ee d等.★情态动词的共同点:不受主语单复数的影响;情态动词后用动词原形情态动词和动词原形共同构成谓语部分.肯定句主语+情态动词+动词原形+其他+She/They can swim well.否定句主语+情态动词+n o t+动词原形+其他+oShe/They cannot swim w ello一般疑问句情态动词+主语+动词原形+其他+Cans he/they swimw ellYes,she/th eyca n./No,she/they cant.特殊疑问句疑问词+情态动词+主语+动词原形+其他+Wh ycan she/they sw imw e11Wh ocan swimwell练习选择填空:My brotherteac eHe his puils verymuch.lo ah rpoA.is,1i keB is,lik e sC.are,li kes D.a re,oli ke2oA:How many daysth ere ina weekB There seven.A.is,is B.are,ar eC is,are D.are,is

3.The boyill t oda y

4.What y our fat herAdo,lik eB is,lik eC.are,1i kes Dodoes,likoA.are Bis Cbe D.amo oe5you goto schoolb ybusoA.Are B.Is CD oDo Doeso6Wh en your birthday oa re B.is C.do D.doesAoW h i ch bigger thesun orthe moo n7o9areB.is BexA oCo Do8My teacheroftenshop ping onSundays.oA.goes Bogos C.go Dogoe d

9.Listen!The chi1dren.A.si n gs Boar esing in gC is singin gD.issin g

10.He rvoice1i ke mymotherms.A.sound sB.sound C.1o oks1o okDo

111.It oftenrai ns and the cro psfast.A getB.t urnC gr owD.b ecom e12A:How areyo unowo oB:Much bet ter,th a n kyo u0ge t t in gB.fe e1in gC.making ing DoturnAo13o Hes wimmin goAod ontlikes B.doesnt likesC.no tli ke D.do esn5t1i ke14o Whatt heyon SaturdaysA.does,does B.do,doC do,doesD.doe s,doo15o YangLing doe xercisewith.A.doe snt,u sBo dont,weC./,u sD.dont,u sL填入适当的谓语动词

1.1a b oyo you aboyNo,I not.

2.The gir1J acks sistero3o Thedog tal1and fat.4o Theman w i thbig eyesa teachero

5.yourb roth erin thecla ss ro o m

6.Where your rnotherShe atho me.

7.Howyour fa ther8o Mike and Liu Tao atsc hooL

9.Whose dress this10o Whoses oc ksth ey11o Thatmy red sk irt.12o WhoI13o Theje ans onthedesko14o Herea scarf foryo uo

15.H ere somes weatersf oryouo

16.The blac kgl oves for SuY ang.17o This pairofglov es forJim18o Phy sic sm yfa vo rites ubj ect.19o Thep o1ice ru nning afterthe th ief.

20.Our classgoin gto the zoociio将下列句子奇数变成否定句，偶数变疑问句

1.11ike music.2o Hewa1k sto scho ol03o Theyoften haveE ng1i shon Mond ay.4o Theboys areswimming inth erive r.5Sh esmi1es happily.o

6.M arywent t othezoo1a st weekoTheworkers mademany car sin thefactory.7oW eshould prote ctthe inn oce nt8o9Her paren ts flyt oLondon twic ea month.o10o Al1my cla ss mat esclimbed theTai Mou ntlas ta utumn.11Th et eacherasks ustocle anthec1ass room.o12o Hewi11go backtoAmer ica attheend ofthe year.iiio将下列句子先变成否定句，一般疑问句,再对划线部分提问1Candy andS amare cleaningtheir room.2Plan tsgrow fast ins pringo3My broth erbo ughtsome f1o wersfor mymot he ro4W ew rit eto each ot hertwice amo nth.。