重点1.祈使句的固定句式
1）祈使句（表条件）+ or/ or else/ otherwise + 主句（表结果）做…… “否则……，要不然……”
2）祈使句（表条件）+ and +主句（表结果）如果… 你就会…
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.
Think it over and you will find the answer.
Give him an inch and he will take a mile.
Work hard and you will make progress every day.
3）短语+ and +陈述句 如果…就会…
