初级中学一年级英语 时态小结.doc

　　　　　　　　　　　　　　　　　　　初一英语 时态小结　　　　　　　　　　　　　撰稿:贾巍 　　　审校:李伟清 　　　责编：牛新阁1．一般现在时：1）基本用法：　　一般现在时表示经常发生或习惯性的动作或状态及客观现实和普遍真理。　　一般现在时常以动词原形表示,但当主语是第三人称单数时，动词词尾加-s或-es。2）句型结构：　　主语＋Ｖ.（包括be动词）＋宾语＋…　　She is an engineer.　　He has breakfast at 6:00 every day.3）注意：　　a)一般现在时通常与always , often , usually , every day , sometimes , once a week 等时间状　　　语连用。　　　I always watch TV at 8:00 in the evening.　　　They go home once a week.　　　We usually do our homework at home.　　b)表客观现实或普遍真理。　　　The sun always rises in the east.　　　The light travels faster than the sound.　　c)表永远性的动作或状态。　　　He lives in the country.4）第三人称单数变化形式：　　a)一般情况动词在词尾加-s.　　　come---comes speak---speaks work---works live---lives　　b)以o, s, x, ch, sh结尾的单词在词后加-es.　　　do---does go---goes finish---finishes brush---brushes 　　　fix---fixes pass---passes watch---watches　　c)以“辅音字母＋y”结尾的单词变y为i加-es.　　　Study---studies carry-carries cry---cries　　d)以“元音字母＋y”结尾的单词直接加-s.　　　play---plays stay---stays例句：　　我每天晚上九点做作业。 I do my homework at nine every evening.　　我在早上七点半起床。 I get up at 7:30 every morning.　　他每天七点去上班。 He goes to work at 7:00 every day.　　我们经常下午打篮球。 We often play basketball in the afternoon.　　他喜欢音乐。 He likes music.　　地球围绕太阳转。 Earth goes around the sun.　　火车六点出发。 The train leaves at 6:00.5）否定句和疑问句：　　a)He is an engineer.　　　He isn’t an engineer.　　　---Is he an engineer?　　　---Yes, he is./ No, he isn’t.　　b)We get up at 7:30 in the morning.　　　We don’t get up at 7:30 in the morning.　　　---Do you get up at 7:30 in the morning?　　　---Yes, we do. / No, we don’t.　　c)He likes music.　　　He doesn’t like music.　　　---Does he like music?　　　---Yes, he does./ No, he doesn’t.2．一般过去时1）基本用法：　　一般过去时表示发生在过去的动作或存在的状态，通常与表示过去的时间状语yesterday, last night ,some years ago, in 1990,in those days.等连用。　　I was a student 6 years ago.　　I went to Beijing last year.　　They saw a film last night.2）句型结构：　　主语＋Ｖ.过去时＋宾语＋…　　例句：昨天他很忙。 He was busy yesterday.　　　　　去年他抽烟了。 He smoked last year.　　　　　两年前他去参军了。 He joined the army two years ag