Many students find it difficult to use 'so that' and 'so as'. In this post, I would like to show readers how to use them correctly.
1 'so that' is followed by a clause
You must study hard so that you can pass the exam with flying colours.
The fat lady needs to exercise so that she can remain slim all the while.
The teacher speaks slowly and clearly so that her students will be able to understand her lessons.
[A clause consists of a subject and a finite verb.]
2 ‘so as’ is followed by an infinitive.
John works hard so as to earn a lot of money.
She copied the text carefully so as not to make a single mistake.
He studies hard so as to pass his exam with high grades.