小学英语动词的用法课件.ppt

,动词,一般现在时中,当主语是第三人称单数时谓语动词要用第三人称单数形式。其实主语是第三人称单数,主要有以下几种情况:1不可数名词作主语。如:Some water is in the glass.水在玻璃杯里。2单个的可数名词作主语。如:The girl is American.这个女孩是美国大3he,she,it等代词单独作主语。如:She likes her family very much,距喜欢她的家。,4单个的人名、地名或称呼作主语。如 Uncle Li speaks a little english.李叔叔会说一点儿英语。Gaocheng is a beautiful town.藁城是一座美丽的城镇。5.指示代词this,that等作主语。A:This is a pear.That is an apple i是一个梨,那是一个苹果。,6.everyone,everything,somethingnobody nothing等不定代词作主语时。如:Is everyone here today?今天大家都到齐了吗?7.单个数字作主语时。如:8”is a good number in China在中国8是个好数字。,主语为第三人称单数的动词变化规则1.一般情况下,直接在动词词尾+s,例如:getgets;take冷 takes2.以s,sh,ch,x,o结尾的动词,在词尾es n如 teach teaches;fxfxes;gogoes3以辅音字母+y结尾的动词,为再+es,如:study-studies;tte(aelo,u是元音字母,其他的2个都是辅音字母),其他规律动词have-has动词be-is助动词do-does,句型转换的方法肯定句变否定句的方法一一四步法1、有be动词的在be动词后加not(am/is/are/was/were not2、在情态动词can,could,shouldW等后加not3.上述都没有的,在动词前加助否定形式dont/doesnt/didnt4、some改成any,练习:把下面的句子变成否定句。She is watching tv nowWe go to school on SundayHis father works hardJacks mother is a nurseThe cat runs fast.They like readingbooksMy grandpa gives me a hot dog.Tom often walks to schoolI have a dollIt is eating fish,肯定句改一般疑问句的方法一一三步法1、把be动词放在句首,剩下的照抄句点改成问号。2、把can,shall;w等放到句首,剩下的照抄,句点改成问号。3、上述都没有的,在句首请助动词Do/Does/Dd帮忙,剩下的照抄,句改成问号。(注:以上句子中some改成any成your,改成you,am改为are总结:有be提be,有情提情,无be无情加助动词。,把下列句子变成一般疑问句1.I am listening to music2.Mike is a student3.There are some flowers in the vase4.This is my sister.5.We need some masks6.they like making the puppet7.Su Hai and Su yang live in a new house8.I put a book on my head,