Grammar_842848.ppt

(1) 一般现在时的句型结构 ①肯定句: 主语+ am/is/are+表语 主语+实义动词 (+其它) ②否定句: 主语+ am/is/are +not+表语 主语+don’t (doesn’t) +实义 动词原形 (+其它) ③疑问句: Am/Is/Are+主语+表语 Do (Does)+主语+实义动词原形(+其它) (2)一般现在时的用法 1) 表示不随时间的变化而变化的事实, 真理，格言，警句等。 ① The earth goes around the sun. 地球绕着太阳转。 ② Practice makes perfect. 熟能生巧。 ③ Tomorrow is Monday. 明天星期天。 2) 表示目前，现在经常发生的动作, 习惯, 或存在的状态。常与下列表示次数的频率副词连用: often, usually, always, sometimes, seldom, every day (week, year, night), once a week等。 ① Class begins at eight every morning. 每天早晨八点钟开始上课。 ② He always works at night. 他经常在晚上工作。 3) 表示“预定”或是“安排好”要发生的，不会轻易改变的未来动作, 事情。常用于此类用法的动词有come, go, move, stop, leave, arrive, be, finish, continue, start, begin等。 ① The plain arrives at 8 o’clock. 飞机八点到。 ② School begins on March 5. 三月五日开学。 4) 用于戏剧, 电影等的剧本解说, 体育比赛及其他活动现场解说或图片的说明等。 ① He passes the ball to John. 他把球传给约翰。 ② There are five people in the picture. 在这幅画中有五个人。 5) 在表时间和条件的状语从句中, 用一般现在时代替将来时。 常见引导时间状语从句的词汇有: when, while, whenever, before, after, till, until, by the time, as soon as。 常见引导条件状语从句的词汇有: if, unless, as long as, so long as, in case (that), provided (that). ① We will have an exam when we finish the textbook. 我们学完课本后将会进行一次测试。 ② I will tell him that as soon as I see him.我一见到他就会告诉他那件事。 ③ We have to wait here before he comes.在他回来前，我们不得不等。 (1) I have been living outside Qingdao for a long time now but I__ back there every few weeks to see my parents. A. am going B. had gone C. would be going D. go (2) Give her the book when you ____. A. will meet her. B. meets her C. meet her D. meeting her. (3) ----I want to write Yang Liwei a letter, but I don’t have any stamps. ----I’ll buy some for you, if I ___to the post office. A. go B. shall go C. will go D. went (1) 现在进行时的基本结构 ① 肯定句: 主语+ am/is/are+ 现在分