二年级下语法
一般现在时
一、 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。
二、 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。
注意 :(我用 am,你用 are,三单 is,复数 are 。)
肯定句:主语 +be+ 其它。 如: He is a worker. 他是工人。
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。 (be 动词移到句首 ),如: Is he a worker ?
特殊疑问句:疑问词 +一般疑问句。 Where is your bike?
2.行为动词:主语 +行为动词 (+其它 )。如: We study English. 我们学习英语。
注意: (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。)
肯定句:主语 +动词原形 (+其它 ) 。如: I like bread.
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 ofter plays football. He doesn't often play football.
一般疑问句: Do( Does ) + 主语 +动词原形 +其它。(句首加助动词 do, does )
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 school 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 she go to school?
三、 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,
3.以“辅音字母 +y ”结尾,变 y为i, 再加 -es ,如: study-studies
四、 一般现在现在时常见时间状语
Always usually, often, sometimes, every week (day,year,month)
练习题
用am, is, are 填空
1. I ______ a boy. ______ you a boy? No, I _____ not.
2. The girl______ Jack's sister.
3. The dog _______ tall and fat.
4. The man with big eyes _______ a teacher.
5. ______ your brother in the classroom?
6. Where _____ your mother? She ______ at home.
7. How _______ your father?
8. Mike and Liu Tao ______ at school.
9. Whose dress ______ this?
10. Whose socks ______ they?
11. That ______ my red skirt.