动词第三人称单数的变化规则及练习一、使用情况：在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s 或-es。(标志词 usually often always sometimes never every 等)二、变化规则1、直接在动词后+s 例如： like- likes play-plays 2、以 s, x, sh, ch, 接尾的动词：+es 例如： wash-washes3、以辅音+o 接尾的动词：+es 例如： go-goes4、以辅音字母+y 接尾的动词：变 y 为 i+es 例如： fly-flies以元音字母+y 接尾的动词后+s例如：play-plays5、除上述规律外，还应注意下面三点： 1) 动词 have ，遇到主语是第三人称单数时，要用 has； 动词 be 的第三人称单数形式是 is。 2）含有动词第三人称单数形式的句子变否定句时，要用 doesn't + 动词原形，如： He goes to school at six in the morning. (变否定句)→ He doesn't go to school at six in the morning. 3)对含有动词第三人称单数形式的句子提问时，要用助动词 does如： She goes home at five every day. (对划线部分提问)→ When / What time does she go 注意： 不规则变化： have-----ha s ， be-------is ， do-----does I 写出下列动词的第三人称单数(-s)和现在分词(-ing)go do play jump swim run put sing dance come get have fly study read write look drink eat walk like II 选择1. Ben_____a new book. A. have B. has C. haves D. were2. Ben and Mary some books. A. have B. has C. are D. were3. I some stories every day. A. have B. has C. are D. were __________ ice cream. 5. Kitty__ English every day man _____in front of his car. ’s bicycle ______a bell. B has having every day his homework every day. 10. I ________ my homework every day. ________ their homework every day.A. do C. is her hands. boys and Superdog______them. saving cow. selling the beanstalk. giant ______boys. ’t eat goose_______golden eggs. woman_______the beanstalk. cut mother ______the beanstalk. take Ctakes D. taking19Jack andher mother _____happer D. have beans...
