一般现在时态,现在时态.doc

一般现在时态一、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-es.watch-watches wish-wishes fix-fixesdo-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-studies cry-cries fly-flies2.不规则变化：be- is are have-has主语是第三人称的情况有1、人称代词是和，she,it 的时候谓语动词用单三形式He likes watching TV。2、单个人名，地名或者称呼做主语的时候谓语动词用单三形式Lucy likes apples. Beijing is in China . Uncle Wang often drinks milk .3、单数可数名词或者this/that +单数名词作主语时谓语动词用单三形式This book is yours .4、不定代词someone ,somebody nobody,everything,something等以及指示代词this和that做主语的时候谓语动词用单三形式Everyone is here。This is a pen .5、不可数名词做主语的时候谓语动词用单三形式The milk is in the glass。The bread is very small。6、当数字和字幕做主语的时候谓语动词用单三形式“6”is a lucky number . “I”is a letter.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，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.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 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 Does she have a little brother?否定句 She doesnt have a little brother1.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 an school.6.Mike sometimes _(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 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