新人教版七年级下册英语知识点
eg：I was so busy that I didn’t go to sleep for 3 days.
The weather was so cold that they had to stay at home.
The coat is so expensive that I don’t want to buy it.
so that 引导目的状语从句，以便，为了（in order to）
eg：they got up early so that they could catch the early bus.
I raise my voice so that I can make myself heard.