一般现在时的讲解及用法

一般现在时的讲解及用法 一 一 定义与讲解 1 定义 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 2 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 注 1 第一人称 I we 第二人称 you 第三人称 He She they it 所有的名字 名称 单数 一个人或事物 复数 两个或两个以上的人或事物 第三人 称单数 第三方的单个的人或事物 除了 they 2 三单变化 多数在动词 不是名词 后 s eg 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 辅音字母 除 a e i o u 这 5 个元音字母外的 21 个字母都是辅音字母 元音字母加 y stay stays play plays say says buy buys 辅音字母加 y try tries study studies cry cries fly flies 二 二 一般现在时的用法 1 经常性或习惯性的动作 常与表示频度的时间状语连用 时间状语 every day sometimes at on Sunday usually once a week I leave home for school at 7 every morning 2 客观真理 客观存在 科学事实 The earth goes around the sun 3 表示格言或警句中 Practice makes perfect 熟能生巧 注意 此用法如果出现在宾语从句中 即使主句是过去时 从句谓语也要用一 般现在时 例 Columbus proved that the earth is round 4 现在时刻的状态 能力 性格 个性 Miss wang writes good English but does not speak well 5 在某些以 here there 开头的句子中 用一般现在时表示正在发生的动作 eg Here comes a bus 公交车来了 注 与一般现在时连用的时间状语 表示时间的词或词组 1 表示频率的副词 always often usually sometimes 2 时间状语 on Sundays every day every morning every year 3 表示频率的词组 once a year three times a week 动词有三种 实义动词 动词有三种 实义动词 be 动词 情态动词 初一未涉及 动词 情态动词 初一未涉及 5 一般现在时中 当主语是第三人称单数 动词是实义动词 1 动词变相应的第三人称单数形式 2 肯定句主语 动词 s 其它 eg 2011 Bill often gives money to the poor 3 否定句主语 doesn t 动词原形 其它 eg Bill often doesn t give money to the poor 4 一般疑问句 Does 主语 动词原形 其它 eg Does bill often give money to the poor 肯定回答 Yes 主语 does Yes he does 6 否定回答 No 主语 doesn t No he doesn t 6 当主语不是第三人称单数时 动词没有三单变化 动词是实义动词 1 肯定句 主语 动词原形 其它 eg I want to marry you 2 否定句 主语 don t 动词原形 其它 eg I don t want to marry you 3 一般疑问句 Do 主语 动词原形 其它 eg Do you want to marry me 肯定回答 Yes 主语 do Yes I do 否定回答 No 主语 don t No I don t be 动词的一般现在时有三种形式 即 动词的一般现在时有三种形式 即 am is are 1 如果主语是第一人称 I 时 be 动词用 am Eg 肯定句 I am a student 我是一名学生 否定句 am not 一般疑问句 Am i 肯定 否定回答 Yes i am No i am not 2 如果主语是 you 你 你们 they 他们 它们 她们 或名词复数 两个以上的人或物 时 be 动词必须用 are 如 肯定句 否定句 一般疑问句及肯定 否定回答 You are my good friend Tom and Lily are my good friends They are my good friends are 与主语还可缩写 如 We are We re They are They re You are You re 而 are 与 not 可缩写成 aren t 如 They aren t students 他们不是学生 但是 am 与 not 不能缩写 3 如果主语是单数名词 不可数名词或单数第三人称代词 he she it 时 be 动词用 is 肯定句 否定句 一般疑问句及肯定 否定的回答 如 My mother is a teacher 我的妈妈是一名老师 He is a student 他是一名学生 is 也可与主语缩写 如 He is He s My mother is My mother s 等 但是 This is 不可缩写 而 is 与 not 可缩写成 isn t 如 This isn t a book 这不是一本书 三 课堂练习巩固 1 主语为第三人称单数 肯定句 He gets get up at six o clock 否定句 doesn t get 一般疑问句 Does he get up at six o clock 肯定 否定回答 2 主语为第一人称 I get get up at six o clock 否定句 I don t get up at six o clock 一般疑问句 Do you get up at six o clock 肯定 否定回答 四 课堂强化练习 1 单项选择题 1 The picture nice A looks B is looked C look D is looking 2 She down and soon falls asleep A live B lain C laid D sits 3 The teacher us to come to school on time A ask B asking C asks D asked 4 John always others A help B helping C helps D to help 5 He for eight hours every day A working B to work C works D worked 6 You d better at home and your homework A to stay do B stay do C to stay to do D stay to do 7 He sits down and a rest A having B have C to have D has 8 Uncle Wang never a cake A make B to make C making D makes 2 句子改错 1 Is your brother speak English 2 Does he likes going fishing 3 He likes play games after class 4 Mr Wu teachs us English 5 She don t do her homework every evening 五 课后练习 一 用动词的适当形式填空 1 She go to school at seven o clock 2 It s 6 o clock They are eat supper 3 He usually up at 17 00 get 4 She live in Beijing 5 Amy be here just now 6 be there a fly on the table just now 7 My father watch TV every evening 8 My father make toys these days 9 Amy read English every day 10 Chen Jie sometimes go to the park with her sister 二 选择填空 1 I want homework now A doing B to do C to do my D do my 2 It s time A go to school B play games C to go home D to do my homeworks 3 you the blackboard Yes I am A Can clean B Am cleaning C Are cleaning D Doclean 4 go and help her A Let s me B Let s us C Let s D Let s to 5 What are they doing They are things away A put B puting C putting D carry 6 Do they have a new car Yes A they are B they have C they don t D they do 7 He often supper at 6 00 in the evening A have B has c is having D is eating 8 It s 6 o clock in the morning He A get up B gets up C is geting up D is getting up 9 What are you doing I m TV A watch B watches C to watch D watching 10 We any Chinese classes on Friday A are having B aren t having C don t have D are have 11 Tom an English class now A is having B has C having D have 12 Are you playing basketball No we A isn t B aren t C not D don t 13 Listen The girl in the room A sings B singing C is singing D are singing 14 The boy is to his teacher A saying B speaking C talking D telling 三 用括号内动词的适当形式填空 1 He often have dinner at home 2 Daniel and Tommy be in Class One 3 We not watch TV on Monday 4 Nick not go to the zoo on Sunday 5 they like the World Cup 6 What they often do on Saturdays 7 your parents read newspapers every day 8 The girl teach us English on Sundays 9 She and I take a walk together every evening 10 There be some water in the bottle 11 Mike like cooking 12 They have the same hobby 13 My aunt look after her baby car