初中一般现在时与三单动词的变化规则.docVIP

一般现在时 1.概念：经常、反复发生的动作或行为及现在的某种状况。2.时间状语：always,usually,often,sometimes,every week(day,year,month…),once a week, on Sundays,3.基本结构：动词原形/第三人称单数形式（如主语为第三人称单数，动词上要改为第三人称单数形式）4.否定形式：am/is/are+not; 谓语动词若为动词，则在其前加dont,如主语为第三人称单数，则用doesnt，同时还原行为动词。5.一般疑问句：把be动词放于句首；用助动词do提问，如主语为第三人称单数，则用does，同时，还原行为动词。 　三单动词的变化规则 1．一般情况下，直接加-s 如：play—plays，?want—wants，?work—works，?know—knows，?help—helps，get—gets 2．以s. x. sh. ch. o结尾，加-es 如：guess—guesses，?fix—fixes，?teach—teaches，?brush—brushes，?go—goes，do—does，watch—watches，catch—catches? 3．以“辅音字母+y”结尾，变y为i, 再加-es 如：study—studies，carry—carries，fly—flies，worry—worries? 一般现在时用法专练: 一、 写出下列动词的第三人称单数 drink ________ go _______ stay ________ make ________ look _________ have_______ pass_______ carry ____ come________ watch______ plant_______ fly ________ study_______ brush________ do_________ teach_______ catch _________ wash_________ like________have______ say_________ learn ________ eat________ read_________ sing_______ 二、用括号内动词的适当形式填空。 （一） 　1. He often ________(have) dinner at home. 　2. Daniel and Tommy _______(be) in Class One. 　3. We _______(not watch) TV on Monday. 　4. Nick _______(not go) to the zoo on Sunday. 　5. ______ they ________(like) the World Cup? 　6. What _______they often _______(do) on Saturdays? 　7. _______ your parents _______(read) newspapers every day? 　8. The girl _______(teach) us English on Sundays. 　9. She and I ________(take) a walk together every evening. 　10. There ________(be) some water in the bottle. 　11. Mike _______(like) cooking. 　12. They _______(have) the same hobby. 　13. My aunt _______(look) after her baby carefully. 　14. You always _______(do) your homework well. 　15. I _______(be) ill. I’m staying in bed. 　16. She _______(go) to school from Monday to Friday. 　17. Liu Tao _______(do) not like PE. 　18. The child often _______(watch) TV in the evening. 　19. Su Hai and Su Yang _______(have) eight lessons this term. 　20. －What day _______(be) it today? It’s Saturday.