洪美玲 发表于 2013-10-29 15:44:47

一般现在时的功能

一般现在时的功能  1.表示事物或人物的特征、状态。如:The sky is blue.天空是蓝色的。  2.表示经常性或习惯性的动作。如:I get up at six every day.我每天六点起床。  3.表示客观现实。如:The earth goes around the sun.地球绕着太阳转。  一般现在时的构成  1. be动词:主语+be(am,is,are)+其它。如:I am a boy.我是一个男孩。 2.行为动词:主语+行为动词(+其它)。如: We study English.我们学习英语。   * 当主语为第三人称单数(he, she,it)时,要在动词后加"-s"或"-es"。如:Mary likes Chinese.玛丽喜欢汉语。 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 一般现在时的变化  1. be动词的变化。 否定句:主语+ be + not +其它。 如:He is not a worker.他不是工人。 一般疑问句:Be +主语+其它。  如:-Are you astudent?-Yes. I am. / No, I'm not. 特殊疑问句:疑问词+一般疑问句。如:Where is my bike? 2.行为动词的变化。  否定句:主语+ don't( doesn't ) +动词原形(+其它)。如:  I don't like bread. 当主语为第三人称单数时,要用doesn't构成否定句。如: He doesn't play football after school. 一般疑问句:Do( Does ) +主语+动词原形+其它。如: - Do you often play football? - Yes, I do. / No, I don't. 当主语为第三人称单数时,要用does构成一般疑问句。如: Does she go to work by bike? - Yes, she does. / No, she doesn't. 特殊疑问句:疑问词+一般疑问句。如:How does your father go to work? 小结:
通常与时间状语 “usually,often, every day, sometimes”连用。
肯定句:
I go to school on foot every day.
She goes to school on foot every day.
一般疑问句:
Do you jump high? Yes, I do. / No, I don’t.
Does he jump high? Yes, he does. / No, he doesn’t.
否定句: We don’t go to school onSundays.
My mother doesn’t like watching TV in the evening.
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