高考英语句型：祈使句

　　(1)、祈使句(表条件)+ or/or else/ otherwise + 主句(表结果)… “否则…，要不然…”
　　(2)、祈使句(表条件)+ and +主句(表结果)
　　[例句]
　　Hurry up, or you’ll be late for class.
　　Please call me up before you come, otherwise/or else/or we might be out.
　　你来之前打个电话，否则，我们也许会出去。
　　Think it over and you will find the answer.
　　Give him an inch and he will take a mile. 得寸进尺。
　　Work hard and you will make progress every day. 好好学习，天天向上。