be动词、助动词、情态动词用法PPT文件格式下载.ppt
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4)特殊疑问句:
疑问词+be+主语(其他成分)+?
Whatsyourname?
Whosthat?
be的用法口诀:
我用am,你用are,is跟着他、她、它。
单数is,复数are,勿忘be的三变化。
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。
一般现在时中be动词的用法相对简单,上面的口诀基本包括了be动词的各种问题。
Exercises,用am/is/are填空1、She()astudent.2、Hisjacket()onthetable.3、We()family.4、-How()you?
-I()fine,thanks.5、JackandI()goodfriends.6、()sheastudent?
7、()youateacher?
I_anEnglishteachernow.They_gladtoseeeachother.HelenandNancy_goodfriends.Thelittledog_twoyearsoldthisyear.Look,there_lotsofgrapeshere.There_asignonthechaironMonday.Today_thesecondofJune.Yesterday_thefirstofJune.It_ChildrensDay.Allthestudents_veryexcited.Theskyblue.Iaboy.There_(be)somewaterinthebottle.,am,are,are,are,am,was,is,is,is,is,is,was,were,16.Theblackgloves_forSuYang.17.Thispairofgloves_forYangLing.18.Thetwocupsofmilk_forme.19.Sometea_intheglass.20.Gaoshansshirt_overthere.21.Mysistersname_Nancy.22.This_notWangFangspencil.23._DavidandHelenfromEngland?
24.There_agirlintheroom.25.There_someapplesonthetree.26._thereanykitesintheclassroom?
27._thereanyapplejuiceinthebottle?
28.There_somebreadontheplate.29.There_aboy,twogirls,threemenandtenwomeninthepark.30.You,heandI_fromChina.,areisareisisisisAreisareAreIsisareare,句型转换,1.Theyaredoinghousework.(分别改成一般疑问句和否定句)2Thestudentsarecleaningtheclassroom.(改一般疑问句并作肯定和否定回答)3.Tomisunderthetree.(变为否定句),Aretheydoinghousework?
Yes,theyare./No,theyarent.Theyarentdoinghousework.Arethestudentscleaningtheclassroom?
Yes,theyare./No,theyarent.Tomisnotunderthetree.,4.Theskateboardsareblack.(改成否定句)5.Itsbranchesarelong.(意思不变,改否定句)6.Sheisalwaysagoodstudent.(改为一般疑问句,作否定回答).,Theskateboardsarenotblack.Itsbranchesarenotshort.Isshealwaysagoodstudent?
No,sheisnt.,助动词do/does,什么是助动词?
顾名思义,助动词就是帮助动词的,而本身没有实际意义的动词,是具有雷锋精神的词汇。
助动词do的三种变化形式do第三人称单数时使用的does过去式did,do的基本用法:
1构成否定句2构成一般疑问句及回答3构成特殊疑问句do的各种形式肯定式:
do否定式:
dont/donotdo用在第一人称单复数、第二人称单复数和第三人称复数作主语,且时态为一般现在时的句子,如:
Ilikethatdress.否定句:
Idontlikethatdress.一般疑问句及回答:
-Doyoulikethatdress?
-Yes,Ido/No,Idont.,特殊疑问句:
Whichdressdoyoulike?
does肯定式:
does否定式:
doesntdoes用在第三人称单数作主语,且时态为一般现在时的句子当does出现时,句子中用动词原形。
如:
Shelikesthatdress.否定句:
Shedoesntlikethatdress.一般疑问句及回答:
-Doesshelikethatdress?
-Yes,shedoes./No,shedoesnt.特殊疑问句:
Whichdressdoesshelike?
Exercises,按要求改写句子:
1.Ithinkheisveryold.(否定句)I_thinkhe_veryold.2.Thissignmeans“Nosmoking”.(改为特殊疑问句)What_thissign_?
3.Myplanthastwogreenleaves.(就划线部分提问)______plant_?
4.Ilovemyparents.(改为一般疑问句)_?
dont,is,does,mean,Howmanygreenleavesdoesyourhave,Doyouloveyourparents,用动词的适当形式填空。
1、They_(read)Englishinthemorning.2、She_(like)hercoatverymuch.3、Heusually_(watch)TVat7:
00intheevening.4、Thegirl_(fly)akiteeveryspring.5、He_(get)upat7oclockinthemorning.6、Themanandthewomanalways_(listen)totheradio.7、Lucy_(notsing)verywell.8、I_(notgo)toschoolbybuseveryday.9、Daming_(run)araceonMondays.10、We_(do)highjumpwithourfriendsatschool.,11、Thelittlegirls_(read)Englishintheevening.12、They_(like)hercoatverymuch.13、Sheusually_(watch)TVwithhersisterintheevening.14、Thegirlsandtheboys_(fly)akiteeveryspring.15、We_(get)upat7oclockinthemorning.16、Mybrotheralways_(listen)tomusicinhisroom.17、LucyandLily_(notspeak)Chinese.18、I_(notgo)toschoolbybuseveryday.19、Daming_(eat)ahamburgeronMondays.20、We_(play)gameswithourfriendsatschool.,注意:
一般现在时态句的否定句和一般疑问句,当句子中有动词时,我们就用助动词do或是does.如果没有动词时,我们就选用is或是are,也就是“Be”除了原形的“be”之外,还有另外七种形式:
am,is,are,been,being,was,were.助动词后接动词原形。
We_(notwatch)TVonMonday.Nick_(notgo)totheschoolonSundays._yourparents_(read)newspaperseveryday?
dontwatch,doesntgo,Do,read,情态动词,情态动词有一定的意义无人称和数的变化除了ought和have通常不带to,后加动词原形表示说话人的语气或情绪(请求、警告、命令等),特点:
情态动词,will/would,can/could,have/hadto,may/might,oughtto,shall/should,must,1.can/could1)表示能力IcanspeakEnglishandFrench.Hecandoithimself.2)表示事物一时的特征,理论上的可能性Itsalwayswarmhere,however,sometimesitcanbeverycold.Evenanexperiencedteachercanmakemistakes.3)表示允诺,许可-CanIeatsomecakes,mom?
-Yes,youcan./No,youcant.Youcanhavemyseat.Iamgoingnow.,4)表示推测-Someoneisknockingatthedoor.Whocanitbe?
CanitbeTony?
-No,itcantbehim.HeisinBeijingnow.No,hecouldntbeathief.Could是can的过去式,用法与can类似,常用于过去时中;
could用在现在时中表示表示委婉、客气,相当于can。
-Couldyouhelpme?
/Couldyoudomeafavor?
-Sure./Certainly.,2.may和might1)表示请求或许可-May/MightIcome