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1、动词的时态,一般现在时的用法 1）客观存在（真理、格言、事实等） As we all know, the earth moves around the sun. London stands on the River Thames. Knowledge is power,2) 表示现在习惯动作 （动作的经常性和习惯性） I go to work by school bus You always sleep with the window open My husband doesnt smoke,3)表示现时状态和现在瞬间动作 Simon is at the door Whats the matt
2、er with you? What do you think? I declare the meeting open,一般过去式的用法,1）表示过去时间 主要用来表示在特定过去时间中一次完成的动作或存在的状态 We visited a factory last Friday He left ten minutes ago The town was a beauty spot,2) 也表示过去的习惯动作 In those days they sowed wheat by hand He worked in a bank all his life He smoked 100 cigarettes
3、a week,3) 虚拟语气也用过去式 If I had enough money，Id buy an airplane If I were you， I would chase her。,练习： 1 上星期他每天来看我 2 我们通常7点半吃早饭 3 你买这双鞋子多久了 4 罗马建成非一日之功,5 孰能生巧 6谁笑到最后，谁笑的最好 8 他从来不做家庭作业，但是学习很好 9 月球上没有水 10 学生们总是按时上课,He saw me everyday last week We usually eat breakfirst at 7:30 How long did you buy this pair of shoes Rome was not built in a day,Pratice makes perfect Who laughs last laughs best He never do his homework, but he studies very well There is no water on the moon Students are always on time for class,