if引导的条件状语从句的同义句是:祈使句加and再加简单句.
祈使句加and加简单句,相当于一个以if引导的条件状语从句,如:
Take a map with you, and you will find your way easily.
带上地图,你将很容易找到路.
Give him an inch, and he will take an ell.
得寸进尺.
Claw me and I'll claw thee.
投之以桃,报之以李.
也有祈使句加or加简单句的意思,这里的or也可以用or else或otherwise来取代,表示否则的意思,即否定的条件,如:
Work hard, or you won't pass the exam.
努力学习,否则你就通不过考试了.
Respect yourself, or no one will respect you.
尊重你自己,不然没人会尊重你.