资源描述:
《一、 定义与讲解.doc》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、一、定义与讲解 一般现在时:表示经常性的事情,经常性的动作或一般性事实。 时间状语:often经常,usually通常,always总是,every每个,sometimes有时,at…在几点钟 只有在第三人称单数用动词的“三单变化”,其他用动词的原形。 三单变化:1.多数在动词后+s play—plays like—likes (1)直接在动词词尾加-s. ask---asks work---works get---gets stay---stays (2)以字母s,x,ch,sh或o结尾的动词,在词尾直接加-e
2、s. watch---watches wish---wishes fix---fixes do---does go---goes pass---passes (3)以“辅音字母加-y”结尾的动词,要先变y为i再加-es. try---tries study---studiescry---cries fly---flies 2.不规则变化: be----is are have----has 二、一般现在时用法 1.表示经常性,习惯性,永久性的动作或存在的状态.通常与副词sometime
3、s,often,usually,always,everyday(year,month),once(twice,threetimes)aday,等时间状语连用。 Theyusuallygotoschoolbybike. Itakethemedicinethreetimesaday. Shehelpshermotheronceaweek. Mary’sfatherisapoliceman. Thereare50studentsinmyclass. 2.表示客观真理,科学原理,自然现象,等客观事实或格言,谚语等。 Thesunrises
4、intheeastandsetsinthewesteveryday. ThemanwhohasneverbeentotheGreatWallisnotarealman. TomorrowisTuesday. 三、一般现在时的句子转换: (1)当句子中有be动词或情态动词时,则把be动词或情态动词(can,could等等)提到主语的前面变成疑问句;在be动词或情态动词后面加not变成否定句. 例:①陈述句:Sheisastudent. 疑问句→Issheastudent? 否定句→Sheisnotastudent. ②陈述句:
5、Icanswim. 疑问句→Canyouswim 否定句→Icannotswim. (2) 当句子中即没有be动词,也没有情态动词时,则在主语前加助动词do(you,以及复数),does(单数she,he,it)变成问句;在主语后谓语动词前加助动词don’t(I,you,以及复数),doesn’t(单数she,he,it)变成否定句,助动词后的动词要变成动词原形。 例:①陈述句:Wegetupat7:00everymorning. 疑问句→Doyougetupat7:00everymorning? 否定句→Wedon’tgetupa
6、t7:00everymorning. ②陈述句:Shehasalittlebrother. 疑问句→Doesshehavealittlebrother? 否定句→Shedoesn’thavealittlebrother. (一).用动词的适当形式填空 1.She_________(go)toschoolatseveno’clock. 2.It’s6 o’clock.Theyare_________(eat)supper. 3.Heusually___________upat17:00.(get) 4.She___________(
7、live)inBeijing. 5.Amy_________(be)herejustnow. 6._______(be)thereafly onthetablejustnow? 7.Myfather__________(watch)TVeveryevening. 8.Myfather_______________(make)toysthesedays. 9.?________Amy_________(read)Englisheveryday 10.ChenJiesometimes_________(go)totheparkwithhe
8、rsister. (二).选择填空 1.Iwant____homeworknow.A.doing B.todo C.todo