一般现在时的结构和用法及讲解 | 您所在的位置:网站首页 › 谓语公式的定义 › 一般现在时的结构和用法及讲解 |
一般现在时结构: 1. 主语+谓语+其他(表动作);2. 主语+be+表语(形容词、名词充当表语)。当主语是第三人称单数时,动词变相应的第三人称单数形式。 (1) be(am,is,are)动词:(作谓语动词时) 肯定句:主语+be动词(am,is,are)+其它。 如: ①I am a student.(主语+be动词+名词) ②They are hungry.(主语+be动词+形容词) ③He is out.(主语+be动词+副词) ④That pen is mine.(主语+be动词+代词) ⑤I am fifteen.(主语+be动词+数词) ⑥The bike is under the tree.(主语+be动词+介词短语) 运用am,is,are写三个句子 否定句:主语+ be(am,is,are) + not +其它。 如:He is not a worker.他不是工人。 运用am,is,are写三个句子 一般疑问句:Be(am,is,are) +主语+其它。 如:-Are you a student? -Yes. I am. / No, I'm not. 运用am,is,are写三个句子 特殊疑问句:疑问词+一般疑问句。 如:Where is my bike? 运用am,is,are写三个句子 特殊疑问句: 疑问词(what, where, who, when, which, whose, how, how many, how much, what shape, what colour,),找句子中有没有be动词(is, am或者are)或情态动词或者助动词 (特殊疑问句:疑问词+be动词(is, am或者are)或情态动词或者助动词+其他?)
(2)行为动词:主语+行为动词+(其它) 1.主语不是第三人称单数时, 肯定句为:主语+动词原形+其它 否定式为:主语+don't+动词原形+其它 疑问句为:Do+主语+动词原形+其它? e.g. ①We speak Chinese. ②Do you speak Chinese? ---Yes, I do. / No, I don't. ③They don't speak Chinese. 写三个句子 2.当主语是第三人称单数时: (he,she,it,A/An,单独的人或事物:Lily/book) 肯定句为:主语+动词(词尾加s或es)+其它。 否定式为:主语+doesn't+动词原形+其它. 疑问句式:Does+主语+动词原形+其它? ①He speaks English. ②He doesn't speaks English. ③- Does she go to work by bike? Yes, she does. / No, she doesn't. 写三个句子 特殊疑问句:疑问词+一般疑问句。如:How does your father go to work? 3.动词+s的变化规则 (1)一般情况下,直接加-s,如:cook-cooks, milk-milks (2)以s. x. sh. ch. o结尾,加-es,如:guess-guesses, wash-washes, watch-watches, go-goes (3)以"辅音字母+y"结尾,变y为i, 再加-es,如:study-studies (3)情态动词(作谓语动词时)(can,could,be able to,may,might,must,have to,need,shall,should, will,would)时, 句子结构为: 肯定句:主语+情态动词+动词原形。 否定句:主语+情态动词+not+动词原形 一般疑问句;情态动词+主语+动词原形+其他? 特殊疑问句:疑问词+情态动词+主语+动词原形+其他? Eg: ① He can speak English. ② Can I help you? What can I do for you? 在实际应用中,一般现在时常与以下时间状语联用: always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays …… 例句:He usually plays football on Sundays.
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