以下三个句子中so that引导的分别是什么状语从句
问题描述：
以下三个句子中so that引导的分别是什么状语从句
She left early ,so that she caught the train.
She left early so that she might catch the train.
She left so early that she caught the train.
so that在句子中引导目的状语从句,相当于in order that,英语中还有那些表“目的”的表达方式.
答
1. 结果状语从句.
2. 目的状语从句.
3. 结果状语从句.
一、简单介绍区分方法：
1. so that只有“结果”“目的”两种状语从句.
2. 目的状语从句,常有can,many,will,could,might,would,should等情态动词.
二、表目的的还有：
in order to
for the purpose of
for the sake of
in the interest of 等.