一般现在时态讲解.ppt

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1、一、定义 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sometimes,often,usually,always,every day(year,month),once(twice,three times)a day,等时间状语连用。They usually go to school by bike.I take the medicine three times a day.She helps her mother once a week.Marys father is a policeman.There are 50 students in my class.2.表示客观真理

2、，科学原理，自然现象，等客观事实或格言，谚语等。The sun rises in the east and sets in the west every day.The man who has never been to the Great Wall is not a real man.Tomorrow is Tuesday.3.用于格言警句中。如Where there is a will,there is a way.有志者事竟成。4.用于表示现在时刻的状态、能力、性格、个性。如：She is a good girl and she always helps others.她是一个好女孩，经

3、常帮助别人。My watch is new.我的手表是新的。二、一般现在时的构成1.当主语是第一人称，第二人称，第三人称复数时谓语动词用复数形式。2 当主语是第三人称单数时，谓语动词要用单三形式。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：陈述句：She is a student.疑问句 Is she a student?否定句 She is not a student.陈述句：I can swim.疑问句 Can you swim 否定句 I can

4、not swim.（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dont（I,you,以及复数),doesnt（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：陈述句：We get up at 7:00 every morning.疑问句Do you get up at 7:00 every morning?否定句We dont get up at 7:00 every morning.陈述句：She has a little brother.疑问句 Doe

5、s she have a little brother?否定句 She doesnt have a little brother 四、动词单三形式的变化。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-es.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 st

6、udy-studies cry-cries fly-flies 2.不规则变化：be-is are have-has 五、一般现在时态专练。五、一般现在时态专练。1.We often_(play)in the playgound.2.He _(get)up at six oclock.3._you _(brush)your teeth every morning.4.What(do)_he usually(do)_ after school?5.Danny _(study)English,Chinese,Maths,Science and Art at school.6.Mike someti

7、mes _(go)to the park with his sister.7.At eight at night,she _(watch)TV with his parents.8._ Mike_(read)English every day?9.How many lessons_your classmate_(have)on Monday?10.What time_his mother_(do)the housework?改写句子 1.Do you often play football after school?(肯定回答)2.I have many books.（改为否定句）3.Gao

8、Shans sister likes playing table tennis（改为否定句）4.She lives in a small town near New York.（改为一般疑问句）5.I watch TV every day.（改为一般疑问句）6.David has got a goal.（改为一般疑问句）7.We have four lessons.（否定句）8.Nancy doesnt run fast（肯定句）9.My dog runs fast.否定句：一般疑问句：10.Mike has two letters for him.一般疑问句：否定句：11.I usually play football on Friday afternoon.否定句:一般疑问句:划线提问 12.Su Yang usually washes some clothes on Saturday.否定句:一般疑问句:划线提问:13.Mingming usually waters the flowers every day 否定句:般疑问句:划线提问 14.Tom does his homework at home.否定句:一般疑问句:划线提问