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一般现在时一般现在时用法:一般现在时表示经常的、习惯性的动作或存在的状态。其用法可概括为:表示事物或人物的特征、状态; I am a boy.表示经常性或习惯性的动作; I usually go to bed at 10 oclock.表示客观现实和普遍真理; The Earth goes around the Sun.表示一个按规定、计划或安排要发生的动作; The bus arrives at 7 in the morning.构成:一般现在时的构成主要有两种形式(1)be 型:句子的谓语动词只有 be(am,is 或 are)例子:肯定句 She is a teacher.否定句 She is not(isnt) a teacher.一般疑问句 Is she a teacher?肯定回答 Yes,she is 否定回答 No,she is not(isnt)(2)实义动词型:句中的谓语动词为实义动词(也叫行为动词)例子:肯定句中,只出现实义动词:I get up in the morning. 否定句中,要在实义动词前面加 do(does)not,do(does)作助动词,本身无意义,常与 not 缩写成 dont(doesnt):I dont like vegetables 一般疑问句,要在句子开头加助动词 Do(does): Do you like oranges? Yes,I do No,I dont谓语动词(+s/+es)的变化规律:一般的动词,直接+s : say、read、know、work以 s、x、ch、sh 结尾的动词,+es:fix、kiss、catch、wash以辅音字母+y 结尾的动词,把 yi,+es:fly、cry、study、try特殊变化:isare、dodoes练习:1.Where _ Lucy come from ?2.They _ (work) at the bank.3.He _ (play) computer game every day.4.She always _ (watch) TV.5.The train _ (arrive) at 7 in the morning.6.The Earth _ (go) around the Sun.7.Most of the students _ (come) from China.8.My living room has three windows.(改成否定句)9.We are in the same class.(改成疑问句)10.He comes from England.(改成以 where 提问的句子)
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