状语从句用法解析

<正>条件状语从句条件状语从句通常由if, unless, as long as等词来引导。注意：在条件状语从句中用一般现在时表示将来,即遵循“主将从现”原则。如：You won’t pass the PE exam successfully unless you exercise every day.除非你每天都锻炼，否则你不会顺利通过体育考试。If you treat others with your heart, you will get friendship in return.如果你用心对待别人，你会得到友谊作为回报。